Update test.yaml

Support for XEP-0082.

.github/workflows/test.yaml

@@ -0,0 +1,38 @@
+name: Run tests
+
+on:
+  pull_request:
+    paths:
+      - '**.go'
+      - 'go.*'
+      - .github/workflows/test.yaml
+
+  push:
+    paths:
+      - '**.go'
+      - 'go.*'
+      - .github/workflows/test.yaml
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go 1.13
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.13
+        id: go
+      - uses: actions/checkout@v1
+      - name: Run tests
+        run: |
+          go test ./... -v -race -coverprofile cover.out -covermode=atomic
+      - name: Convert coverage to lcov
+        uses: jandelgado/gcov2lcov-action@v1
+        with:
+          infile: cover.out
+          outfile: coverage.lcov
+      - name: Coveralls
+        uses: coverallsapp/github-action@v1
+        with:
+          github-token: ${{ secrets.github_token }}
+          path-to-lcov: coverage.lcov

CHANGELOG.md

@@ -0,0 +1,58 @@
+# Fluux XMPP Changelog
+
+## v0.5.0
+
+### Changes
+
+- Added support for XEP-0198 (Stream management)
+- Added message queue : when using "SendX" methods on a client, messages are also stored in a queue. When requesting
+acks from the server, sent messages will be discarded, and unsent ones will be sent again. (see https://xmpp.org/extensions/xep-0198.html#acking)
+- Added support for stanza_errors (see https://xmpp.org/rfcs/rfc3920.html#def C.2.  Stream error namespace and https://xmpp.org/rfcs/rfc6120.html#schemas-streamerror)
+- Added separate hooks for connection and reconnection on the client. One can now specify different actions to get triggered on client connect 
+and reconnect, at client init time.
+- Client state update is now thread safe
+- Changed the Config struct to use pointer semantics
+- Tests
+- Refactoring, including removing some Fprintf statements in favor of Marshal + Write and using structs from the library
+instead of strings
+
+## v0.4.0
+
+### Changes
+
+- Added support for XEP-0060 (PubSub)  
+(no support for 6.5.4 Returning Some Items yet as it needs XEP-0059, Result Sets)
+- Added support for XEP-0050 (Commands)
+- Added support for XEP-0004 (Forms)
+- Updated the client example with a TUI
+- Make keepalive interval configurable #134
+- Fix updating of EventManager.CurrentState #136
+- Added callbacks for error management in Component and Client. Users must now provide a callback function when using NewClient/Component.
+- Moved JID from xmpp package to stanza package
+
+## v0.3.0
+
+### Changes
+
+- Update requirements to go1.13
+- Add a websocket transport
+- Add Client.SendIQ method
+- Add IQ result routes to the Router
+- Fix SIGSEGV in xmpp_component (#126)
+- Add tests for Component and code style fixes
+
+## v0.2.0
+
+### Changes
+
+- XMPP Over Websocket support
+- Add support for getting IQ responses to client IQ queries (synchronously or asynchronously, passing an handler
+  function).
+- Implement X-OAUTH2 authentication method. You can read more details here:
+  [Understanding ejabberd OAuth Support & Roadmap: Step 4](https://blog.process-one.net/understanding-ejabberd-oauth-support-roadmap/)
+- Fix issues in the stanza builder when trying to add text inside and XMPP node.
+- Fix issues with unescaped % characters in XMPP payload.
+
+### Code migration guide
+
+TODO

Dockerfile

@@ -1,4 +0,0 @@
-FROM golang:1.12
-WORKDIR /xmpp
-RUN curl -o codecov.sh -s https://codecov.io/bash && chmod +x codecov.sh
-COPY . ./

README.md

@@ -1,6 +1,6 @@
 # Fluux XMPP
 
-[![Codeship Status for FluuxIO/xmpp](https://app.codeship.com/projects/dba7f300-d145-0135-6c51-26e28af241d2/status?branch=master)](https://app.codeship.com/projects/262399) [![GoDoc](https://godoc.org/gosrc.io/xmpp?status.svg)](https://godoc.org/gosrc.io/xmpp) [![GoReportCard](https://goreportcard.com/badge/gosrc.io/xmpp)](https://goreportcard.com/report/fluux.io/xmpp) [![codecov](https://codecov.io/gh/FluuxIO/go-xmpp/branch/master/graph/badge.svg)](https://codecov.io/gh/FluuxIO/go-xmpp)
+[![GoDoc](https://godoc.org/gosrc.io/xmpp?status.svg)](https://godoc.org/gosrc.io/xmpp) [![GoReportCard](https://goreportcard.com/badge/gosrc.io/xmpp)](https://goreportcard.com/report/fluux.io/xmpp) [![Coverage Status](https://coveralls.io/repos/github/FluuxIO/go-xmpp/badge.svg?branch=master)](https://coveralls.io/github/FluuxIO/go-xmpp?branch=master)
 
 Fluux XMPP is a Go XMPP library, focusing on simplicity, simple automation, and IoT.
 
@@ -11,7 +11,7 @@ The goal is to make simple to write simple XMPP clients and components:
 - For writing simple chatbot to control a service or a thing,
 - For writing XMPP servers components.
 
-The library is designed to have minimal dependencies. For now, the library does not depend on any other library.
+The library is designed to have minimal dependencies. Currently it requires at least Go 1.13.
 
 ## Configuration and connection
 
@@ -34,8 +34,8 @@ Here is an example code to configure a client to allow connecting to a server wi
 config := xmpp.Config{
 	Address:      "localhost:5222",
 	Jid:          "test@localhost",
-	Password:     "test",
-	TLSConfig:     tls.Config{InsecureSkipVerify: true},
+	Credential:   xmpp.Password("Test"),
+	TLSConfig:    tls.Config{InsecureSkipVerify: true},
 }
 ```
 
@@ -52,7 +52,16 @@ config := xmpp.Config{
   - [XEP-0355: Namespace Delegation](https://xmpp.org/extensions/xep-0355.html)
   - [XEP-0356: Privileged Entity](https://xmpp.org/extensions/xep-0356.html)
 
-## Stanza subpackage
+### Extensions 
+  - [XEP-0060: Publish-Subscribe](https://xmpp.org/extensions/xep-0060.html)  
+    Note : "6.5.4 Returning Some Items" requires support for [XEP-0059: Result Set Management](https://xmpp.org/extensions/xep-0059.html), 
+    and is therefore not supported yet. 
+  - [XEP-0004: Data Forms](https://xmpp.org/extensions/xep-0004.html)
+  - [XEP-0050: Ad-Hoc Commands](https://xmpp.org/extensions/xep-0050.html)
+
+## Package overview
+
+### Stanza subpackage
 
 XMPP stanzas are basic and extensible XML elements. Stanzas (or sometimes special stanzas called 'nonzas') are used to 
 leverage the XMPP protocol features. During a session, a client (or a component) and a server will be exchanging stanzas
@@ -73,6 +82,14 @@ implement your own extensions directly in your own application.
 To learn more about the stanza package, you can read more in the
 [stanza package documentation](https://github.com/FluuxIO/go-xmpp/blob/master/stanza/README.md).
 
+### Router
+
+TODO
+
+### Getting IQ response from server
+
+TODO
+
 ## Examples
 
 We have several [examples](https://github.com/FluuxIO/go-xmpp/tree/master/_examples) to help you get started using
@@ -94,17 +111,20 @@ import (
 
 func main() {
 	config := xmpp.Config{
-		Address:      "localhost:5222",
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:5222",
+		},
 		Jid:          "test@localhost",
-		Password:     "test",
+		Credential:   xmpp.Password("test"),
 		StreamLogger: os.Stdout,
 		Insecure:     true,
+		// TLSConfig: tls.Config{InsecureSkipVerify: true},
 	}
 
 	router := xmpp.NewRouter()
 	router.HandleFunc("message", handleMessage)
 
-	client, err := xmpp.NewClient(config, router)
+	client, err := xmpp.NewClient(config, router, errorHandler)
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
@@ -126,6 +146,11 @@ func handleMessage(s xmpp.Sender, p stanza.Packet) {
 	reply := stanza.Message{Attrs: stanza.Attrs{To: msg.From}, Body: msg.Body}
 	_ = s.Send(reply)
 }
+
+func errorHandler(err error) {
+	fmt.Println(err.Error())
+}
+
 ```
 
 ## Reference documentation

_examples/custom_stanza/custom_stanza.go

@@ -9,7 +9,10 @@ import (
 )
 
 func main() {
-	iq := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "service.localhost", Id: "custom-pl-1"})
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "service.localhost", Id: "custom-pl-1"})
+	if err != nil {
+		log.Fatalf("failed to create IQ: %v", err)
+	}
 	payload := CustomPayload{XMLName: xml.Name{Space: "my:custom:payload", Local: "query"}, Node: "test"}
 	iq.Payload = payload
 
@@ -44,6 +47,9 @@ func (c CustomPayload) Namespace() string {
 	return c.XMLName.Space
 }
 
-func init() {
-	stanza.TypeRegistry.MapExtension(stanza.PKTIQ, xml.Name{"my:custom:payload", "query"}, CustomPayload{})
+func (c CustomPayload) GetSet() *stanza.ResultSet {
+	return nil
+}
+func init() {
+	stanza.TypeRegistry.MapExtension(stanza.PKTIQ, xml.Name{Space: "my:custom:payload", Local: "query"}, CustomPayload{})
 }

_examples/delegation/delegation.go

@@ -11,9 +11,12 @@ import (
 
 func main() {
 	opts := xmpp.ComponentOptions{
-		Domain:  "service.localhost",
-		Secret:  "mypass",
-		Address: "localhost:9999",
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:9999",
+			Domain:  "service.localhost",
+		},
+		Domain: "service.localhost",
+		Secret: "mypass",
 
 		// TODO: Move that part to a component discovery handler
 		Name:     "Test Component",
@@ -32,7 +35,9 @@ func main() {
 		IQNamespaces("urn:xmpp:delegation:1").
 		HandlerFunc(handleDelegation)
 
-	component, err := xmpp.NewComponent(opts, router)
+	component, err := xmpp.NewComponent(opts, router, func(err error) {
+		log.Println(err)
+	})
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
@@ -75,7 +80,7 @@ const (
 // ctx.Opts
 func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
 	// Type conversion & sanity checks
-	iq, ok := p.(stanza.IQ)
+	iq, ok := p.(*stanza.IQ)
 	if !ok {
 		return
 	}
@@ -84,15 +89,18 @@ func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
 		return
 	}
 
-	iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
+	if err != nil {
+		log.Fatalf("failed to create IQ response: %v", err)
+	}
 
 	switch info.Node {
 	case "":
-		discoInfoRoot(&iqResp, opts)
+		discoInfoRoot(iqResp, opts)
 	case pubsubNode:
-		discoInfoPubSub(&iqResp)
+		discoInfoPubSub(iqResp)
 	case pepNode:
-		discoInfoPEP(&iqResp)
+		discoInfoPEP(iqResp)
 	}
 
 	_ = c.Send(iqResp)
@@ -152,7 +160,7 @@ func discoInfoPEP(iqResp *stanza.IQ) {
 
 func handleDelegation(s xmpp.Sender, p stanza.Packet) {
 	// Type conversion & sanity checks
-	iq, ok := p.(stanza.IQ)
+	iq, ok := p.(*stanza.IQ)
 	if !ok {
 		return
 	}
@@ -163,12 +171,12 @@ func handleDelegation(s xmpp.Sender, p stanza.Packet) {
 	}
 	forwardedPacket := delegation.Forwarded.Stanza
 	fmt.Println(forwardedPacket)
-	forwardedIQ, ok := forwardedPacket.(stanza.IQ)
+	forwardedIQ, ok := forwardedPacket.(*stanza.IQ)
 	if !ok {
 		return
 	}
 
-	pubsub, ok := forwardedIQ.Payload.(*stanza.PubSub)
+	pubsub, ok := forwardedIQ.Payload.(*stanza.PubSubGeneric)
 	if !ok {
 		// We only support pubsub delegation
 		return
@@ -176,8 +184,11 @@ func handleDelegation(s xmpp.Sender, p stanza.Packet) {
 
 	if pubsub.Publish.XMLName.Local == "publish" {
 		// Prepare pubsub IQ reply
-		iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: forwardedIQ.To, To: forwardedIQ.From, Id: forwardedIQ.Id})
-		payload := stanza.PubSub{
+		iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: forwardedIQ.To, To: forwardedIQ.From, Id: forwardedIQ.Id})
+		if err != nil {
+			log.Fatalf("failed to create iqResp: %v", err)
+		}
+		payload := stanza.PubSubGeneric{
 			XMLName: xml.Name{
 				Space: "http://jabber.org/protocol/pubsub",
 				Local: "pubsub",
@@ -185,7 +196,10 @@ func handleDelegation(s xmpp.Sender, p stanza.Packet) {
 		}
 		iqResp.Payload = &payload
 		// Wrap the reply in delegation 'forward'
-		iqForward := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
+		iqForward, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
+		if err != nil {
+			log.Fatalf("failed to create iqForward: %v", err)
+		}
 		delegPayload := stanza.Delegation{
 			XMLName: xml.Name{
 				Space: "urn:xmpp:delegation:1",

_examples/go.mod

@@ -1,11 +1,11 @@
 module gosrc.io/xmpp/_examples
 
-go 1.12
+go 1.13
 
 require (
 	github.com/processone/mpg123 v1.0.0
 	github.com/processone/soundcloud v1.0.0
-	gosrc.io/xmpp v0.1.1
+	gosrc.io/xmpp v0.4.0
 )
 
 replace gosrc.io/xmpp => ./../

_examples/go.sum

@@ -1,7 +1,214 @@
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_examples/muc_bot/README.md

@@ -0,0 +1,3 @@
+# XMPP Multi-User (MUC) chat bot example
+
+This code shows how to build a simple basic XMPP Multi-User chat bot using Fluux Go XMPP library.

_examples/xmpp_chat_client/README.md

@@ -0,0 +1,51 @@
+# Chat TUI example
+This is a simple chat example, with a TUI.   
+It shows the library usage and a few of its capabilities. 
+## How to run
+### Build
+You can build the client using : 
+```
+    go build -o example_client
+```
+and then run with (on unix for example): 
+```
+    ./example_client
+```
+or you can simply build + run in one command while at the example directory root, like this:
+```
+    go run xmpp_chat_client.go interface.go 
+```
+
+### Configuration
+The example needs a configuration file to run. A sample file is provided.  
+By default, the example will look for a file named "config" in the current directory.
+To provide a different configuration file, pass the following argument to the example :
+```
+    go run xmpp_chat_client.go interface.go -c /path/to/config
+```
+where /path/to/config is the path to the directory containing the configuration file. The configuration file must be named 
+"config" and be using the yaml format.  
+  
+Required fields are :
+```yaml
+Server :
+  - full_address: "localhost:5222"
+Client : # This is you
+  - jid: "testuser2@localhost"
+  - pass: "pass123" #Password in a config file yay
+
+# Contacts list, ";" separated
+Contacts : "testuser1@localhost;testuser3@localhost"
+# Should we log stanzas ?  
+LogStanzas:
+  - logger_on: "true"
+  - logfile_path: "./logs" # Path to directory, not file.
+```
+
+## How to use
+Shortcuts :   
+    - ctrl+space  : switch between input window and menu window.  
+    - While in input window :  
+        - enter : sends a message if in message mode (see menu options)  
+        - ctrl+e : sends a raw stanza when in raw mode (see menu options)    
+    - ctrl+c : quit  

_examples/xmpp_chat_client/config.yml

@@ -0,0 +1,13 @@
+# Sample config for the client
+Server :
+  - full_address: "localhost:5222"
+Client :
+  - jid: "testuser2@localhost"
+  - pass: "pass123" #Password in a config file yay
+
+Contacts : "testuser1@localhost;testuser3@localhost"
+
+LogStanzas:
+  - logger_on: "true"
+  - logfile_path: "./logs"
+

_examples/xmpp_chat_client/go.mod

@@ -0,0 +1,10 @@
+module go-xmpp/_examples/xmpp_chat_client
+
+go 1.13
+
+require (
+	github.com/awesome-gocui/gocui v0.6.1-0.20191115151952-a34ffb055986
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.6.1
+	gosrc.io/xmpp v0.4.0
+)

_examples/xmpp_chat_client/interface.go

@@ -0,0 +1,371 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"github.com/awesome-gocui/gocui"
+	"log"
+	"strings"
+)
+
+const (
+	// Windows
+	chatLogWindow      = "clw" // Where (received and sent) messages are logged
+	chatInputWindow    = "iw"  // Where messages are written
+	rawInputWindow     = "rw"  // Where raw stanzas are written
+	contactsListWindow = "cl"  // Where the contacts list is shown, and contacts are selectable
+	menuWindow         = "mw"  // Where the menu is shown
+	disconnectMsg      = "msg"
+
+	// Windows titles
+	chatLogWindowTitle      = "Chat log"
+	menuWindowTitle         = "Menu"
+	chatInputWindowTitle    = "Write a message :"
+	rawInputWindowTitle     = "Write or paste a raw stanza. Press \"Ctrl+E\" to send :"
+	contactsListWindowTitle = "Contacts"
+
+	// Menu options
+	disconnect         = "Disconnect"
+	askServerForRoster = "Ask server for roster"
+	rawMode            = "Switch to Send Raw Mode"
+	messageMode        = "Switch to Send Message Mode"
+	contactList        = "Contacts list"
+	backFromContacts   = "<- Go back"
+)
+
+// To store names of views on top
+type viewsState struct {
+	input          string   // Which input view is on top
+	side           string   // Which side view is on top
+	contacts       []string // Contacts list
+	currentContact string   // Contact we are currently messaging
+}
+
+var (
+	// Which window is on top currently on top of the other.
+	// This is the init setup
+	viewState = viewsState{
+		input: chatInputWindow,
+		side:  menuWindow,
+	}
+	menuOptions = []string{contactList, rawMode, askServerForRoster, disconnect}
+	// Errors
+	servConnFail = errors.New("failed to connect to server. Check your configuration ? Exiting")
+)
+
+func setCurrentViewOnTop(g *gocui.Gui, name string) (*gocui.View, error) {
+	if _, err := g.SetCurrentView(name); err != nil {
+		return nil, err
+	}
+	return g.SetViewOnTop(name)
+}
+
+func layout(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+
+	if v, err := g.SetView(chatLogWindow, maxX/5, 0, maxX-1, 5*maxY/6-1, 0); err != nil {
+		if !gocui.IsUnknownView(err) {
+			return err
+		}
+		v.Title = chatLogWindowTitle
+		v.Wrap = true
+		v.Autoscroll = true
+	}
+
+	if v, err := g.SetView(contactsListWindow, 0, 0, maxX/5-1, 5*maxY/6-2, 0); err != nil {
+		if !gocui.IsUnknownView(err) {
+			return err
+		}
+		v.Title = contactsListWindowTitle
+		v.Wrap = true
+		// If we set this to true, the contacts list will "fit" in the window but if the number
+		// of contacts exceeds the maximum height, some contacts will be hidden...
+		// If set to false, we can scroll up and down the contact list... infinitely. Meaning lower lines
+		// will be unlimited and empty... Didn't find a way to quickfix yet.
+		v.Autoscroll = false
+	}
+
+	if v, err := g.SetView(menuWindow, 0, 0, maxX/5-1, 5*maxY/6-2, 0); err != nil {
+		if !gocui.IsUnknownView(err) {
+			return err
+		}
+		v.Title = menuWindowTitle
+		v.Wrap = true
+		v.Autoscroll = true
+		fmt.Fprint(v, strings.Join(menuOptions, "\n"))
+		if _, err = setCurrentViewOnTop(g, menuWindow); err != nil {
+			return err
+		}
+	}
+
+	if v, err := g.SetView(rawInputWindow, 0, 5*maxY/6-1, maxX/1-1, maxY-1, 0); err != nil {
+		if !gocui.IsUnknownView(err) {
+			return err
+		}
+		v.Title = rawInputWindowTitle
+		v.Editable = true
+		v.Wrap = true
+	}
+
+	if v, err := g.SetView(chatInputWindow, 0, 5*maxY/6-1, maxX/1-1, maxY-1, 0); err != nil {
+		if !gocui.IsUnknownView(err) {
+			return err
+		}
+		v.Title = chatInputWindowTitle
+		v.Editable = true
+		v.Wrap = true
+
+		if _, err = setCurrentViewOnTop(g, chatInputWindow); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func quit(g *gocui.Gui, v *gocui.View) error {
+	return gocui.ErrQuit
+}
+
+// Sends an input text from the user to the backend while also printing it in the chatlog window.
+// KeyEnter is viewed as "\n" by gocui, so messages should only be one line, whereas raw sending has a different key
+// binding and therefor should work with this too (for multiple lines stanzas)
+func writeInput(g *gocui.Gui, v *gocui.View) error {
+	chatLogWindow, _ := g.View(chatLogWindow)
+
+	input := strings.Join(v.ViewBufferLines(), "\n")
+
+	fmt.Fprintln(chatLogWindow, "Me : ", input)
+	if viewState.input == rawInputWindow {
+		rawTextChan <- input
+	} else {
+		textChan <- input
+	}
+
+	v.Clear()
+	v.EditDeleteToStartOfLine()
+	return nil
+}
+
+func setKeyBindings(g *gocui.Gui) {
+	// ==========================
+	// All views
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
+		log.Panicln(err)
+	}
+
+	// ==========================
+	// Chat input
+	if err := g.SetKeybinding(chatInputWindow, gocui.KeyEnter, gocui.ModNone, writeInput); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.SetKeybinding(chatInputWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
+		log.Panicln(err)
+	}
+
+	// ==========================
+	// Raw input
+	if err := g.SetKeybinding(rawInputWindow, gocui.KeyCtrlE, gocui.ModNone, writeInput); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.SetKeybinding(rawInputWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
+		log.Panicln(err)
+	}
+
+	// ==========================
+	// Menu
+	if err := g.SetKeybinding(menuWindow, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(menuWindow, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(menuWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(menuWindow, gocui.KeyEnter, gocui.ModNone, getLine); err != nil {
+		log.Panicln(err)
+	}
+
+	// ==========================
+	// Contacts list
+	if err := g.SetKeybinding(contactsListWindow, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(contactsListWindow, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(contactsListWindow, gocui.KeyEnter, gocui.ModNone, getLine); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding(contactsListWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
+		log.Panicln(err)
+	}
+
+	// ==========================
+	// Disconnect message
+	if err := g.SetKeybinding(disconnectMsg, gocui.KeyEnter, gocui.ModNone, delMsg); err != nil {
+		log.Panicln(err)
+	}
+}
+
+// General
+// Used to handle menu selections and navigations
+func getLine(g *gocui.Gui, v *gocui.View) error {
+	var l string
+	var err error
+
+	_, cy := v.Cursor()
+	if l, err = v.Line(cy); err != nil {
+		l = ""
+	}
+	if viewState.side == menuWindow {
+		if l == contactList {
+			cv, _ := g.View(contactsListWindow)
+			viewState.side = contactsListWindow
+			g.SetViewOnTop(contactsListWindow)
+			g.SetCurrentView(contactsListWindow)
+			if len(cv.ViewBufferLines()) == 0 {
+				printContactsToWindow(g, viewState.contacts)
+			}
+		} else if l == disconnect {
+			maxX, maxY := g.Size()
+			msg := "You disconnected from the server. Press enter to quit."
+			if v, err := g.SetView(disconnectMsg, maxX/2-30, maxY/2, maxX/2-29+len(msg), maxY/2+2, 0); err != nil {
+				if !gocui.IsUnknownView(err) {
+					return err
+				}
+				fmt.Fprintln(v, msg)
+				if _, err := g.SetCurrentView(disconnectMsg); err != nil {
+					return err
+				}
+			}
+			killChan <- disconnectErr
+		} else if l == askServerForRoster {
+			chlw, _ := g.View(chatLogWindow)
+			fmt.Fprintln(chlw, infoFormat+"Asking server for contacts list...")
+			rosterChan <- struct{}{}
+		} else if l == rawMode {
+			mw, _ := g.View(menuWindow)
+			viewState.input = rawInputWindow
+			g.SetViewOnTop(rawInputWindow)
+			g.SetCurrentView(rawInputWindow)
+			menuOptions[1] = messageMode
+			v.Clear()
+			v.EditDeleteToStartOfLine()
+			fmt.Fprintln(mw, strings.Join(menuOptions, "\n"))
+			message := "Now sending in raw stanza mode"
+			clv, _ := g.View(chatLogWindow)
+			fmt.Fprintln(clv, infoFormat+message)
+		} else if l == messageMode {
+			mw, _ := g.View(menuWindow)
+			viewState.input = chatInputWindow
+			g.SetViewOnTop(chatInputWindow)
+			g.SetCurrentView(chatInputWindow)
+			menuOptions[1] = rawMode
+			v.Clear()
+			v.EditDeleteToStartOfLine()
+			fmt.Fprintln(mw, strings.Join(menuOptions, "\n"))
+			message := "Now sending in messages mode"
+			clv, _ := g.View(chatLogWindow)
+			fmt.Fprintln(clv, infoFormat+message)
+		}
+	} else if viewState.side == contactsListWindow {
+		if l == backFromContacts {
+			viewState.side = menuWindow
+			g.SetViewOnTop(menuWindow)
+			g.SetCurrentView(menuWindow)
+		} else if l == "" {
+			return nil
+		} else {
+			// Updating the current correspondent, back-end side.
+			CorrespChan <- l
+			viewState.currentContact = l
+			// Showing the selected contact in contacts list
+			cl, _ := g.View(contactsListWindow)
+			cts := cl.ViewBufferLines()
+			cl.Clear()
+			printContactsToWindow(g, cts)
+			// Showing a message to the user, and switching back to input after the new contact is selected.
+			message := "Now sending messages to : " + l + " in a private conversation"
+			clv, _ := g.View(chatLogWindow)
+			fmt.Fprintln(clv, infoFormat+message)
+			g.SetCurrentView(chatInputWindow)
+		}
+	}
+
+	return nil
+}
+
+func printContactsToWindow(g *gocui.Gui, contactsList []string) {
+	cl, _ := g.View(contactsListWindow)
+	for _, c := range contactsList {
+		c = strings.ReplaceAll(c, " *", "")
+		if c == viewState.currentContact {
+			fmt.Fprintf(cl, c+" *\n")
+		} else {
+			fmt.Fprintf(cl, c+"\n")
+		}
+	}
+}
+
+// Changing view between input and "menu/contacts" when pressing the specific key.
+func nextView(g *gocui.Gui, v *gocui.View) error {
+	if v == nil || v.Name() == chatInputWindow || v.Name() == rawInputWindow {
+		_, err := g.SetCurrentView(viewState.side)
+		return err
+	} else if v.Name() == menuWindow || v.Name() == contactsListWindow {
+		_, err := g.SetCurrentView(viewState.input)
+		return err
+	}
+
+	// Should not be reached right now
+	_, err := g.SetCurrentView(chatInputWindow)
+	return err
+}
+
+func cursorDown(g *gocui.Gui, v *gocui.View) error {
+	if v != nil {
+		cx, cy := v.Cursor()
+		// Avoid going below the list of contacts. Although lines are stored in the view as a slice
+		// in the used lib. Therefor, if the number of lines is too big, the cursor will go past the last line since
+		// increasing slice capacity is done by doubling it. Last lines will be "nil" and reachable by the cursor
+		// in a dynamic context (such as contacts list)
+		cv := g.CurrentView()
+		h := cv.LinesHeight()
+		if cy+1 >= h {
+			return nil
+		}
+		// Lower cursor
+		if err := v.SetCursor(cx, cy+1); err != nil {
+			ox, oy := v.Origin()
+			if err := v.SetOrigin(ox, oy+1); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func cursorUp(g *gocui.Gui, v *gocui.View) error {
+	if v != nil {
+		ox, oy := v.Origin()
+		cx, cy := v.Cursor()
+		if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
+			if err := v.SetOrigin(ox, oy-1); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func delMsg(g *gocui.Gui, v *gocui.View) error {
+	if err := g.DeleteView(disconnectMsg); err != nil {
+		return err
+	}
+	errChan <- gocui.ErrQuit // Quit the program
+	return nil
+}

_examples/xmpp_chat_client/xmpp_chat_client.go

@@ -0,0 +1,339 @@
+package main
+
+/*
+xmpp_chat_client is a demo client that connect on an XMPP server to chat with other members
+*/
+
+import (
+	"context"
+	"encoding/xml"
+	"errors"
+	"flag"
+	"fmt"
+	"github.com/awesome-gocui/gocui"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+	"log"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	infoFormat = "====== "
+	// Default configuration
+	defaultConfigFilePath = "./"
+
+	configFileName = "config"
+	configType     = "yaml"
+	logStanzasOn   = "logger_on"
+	logFilePath    = "logfile_path"
+	// Keys in config
+	serverAddressKey = "full_address"
+	clientJid        = "jid"
+	clientPass       = "pass"
+	configContactSep = ";"
+)
+
+var (
+	CorrespChan = make(chan string, 1)
+	textChan    = make(chan string, 5)
+	rawTextChan = make(chan string, 5)
+	killChan    = make(chan error, 1)
+	errChan     = make(chan error)
+	rosterChan  = make(chan struct{})
+
+	logger        *log.Logger
+	disconnectErr = errors.New("disconnecting client")
+)
+
+type config struct {
+	Server     map[string]string `mapstructure:"server"`
+	Client     map[string]string `mapstructure:"client"`
+	Contacts   string            `string:"contact"`
+	LogStanzas map[string]string `mapstructure:"logstanzas"`
+}
+
+func main() {
+
+	// ============================================================
+	// Parse the flag with the config directory path as argument
+	flag.String("c", defaultConfigFilePath, "Provide a path to the directory that contains the configuration"+
+		" file you want to use. Config file should be named \"config\" and be in YAML format..")
+	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
+	pflag.Parse()
+
+	// ==========================
+	// Read configuration
+	c := readConfig()
+
+	//================================
+	// Setup logger
+	on, err := strconv.ParseBool(c.LogStanzas[logStanzasOn])
+	if err != nil {
+		log.Panicln(err)
+	}
+	if on {
+		f, err := os.OpenFile(path.Join(c.LogStanzas[logFilePath], "logs.txt"), os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
+		if err != nil {
+			log.Panicln(err)
+		}
+		logger = log.New(f, "", log.Lshortfile|log.Ldate|log.Ltime)
+		logger.SetOutput(f)
+		defer f.Close()
+	}
+
+	// ==========================
+	// Create TUI
+	g, err := gocui.NewGui(gocui.OutputNormal, true)
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+	g.Highlight = true
+	g.Cursor = true
+	g.SelFgColor = gocui.ColorGreen
+	g.SetManagerFunc(layout)
+	setKeyBindings(g)
+
+	// ==========================
+	// Run TUI
+	go func() {
+		errChan <- g.MainLoop()
+	}()
+
+	// ==========================
+	// Start XMPP client
+	go startClient(g, c)
+
+	select {
+	case err := <-errChan:
+		if err == gocui.ErrQuit {
+			log.Println("Closing client.")
+		} else {
+			log.Panicln(err)
+		}
+	}
+}
+
+func startClient(g *gocui.Gui, config *config) {
+
+	// ==========================
+	// Client setup
+	clientCfg := xmpp.Config{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: config.Server[serverAddressKey],
+		},
+		Jid:        config.Client[clientJid],
+		Credential: xmpp.Password(config.Client[clientPass]),
+		Insecure:   true}
+
+	var client *xmpp.Client
+	var err error
+	router := xmpp.NewRouter()
+
+	handlerWithGui := func(_ xmpp.Sender, p stanza.Packet) {
+		msg, ok := p.(stanza.Message)
+		if logger != nil {
+			m, _ := xml.Marshal(msg)
+			logger.Println(string(m))
+		}
+
+		v, err := g.View(chatLogWindow)
+		if !ok {
+			fmt.Fprintf(v, "%sIgnoring packet: %T\n", infoFormat, p)
+			return
+		}
+		if err != nil {
+			return
+		}
+		g.Update(func(g *gocui.Gui) error {
+			if msg.Error.Code != 0 {
+				_, err := fmt.Fprintf(v, "Error from server : %s : %s \n", msg.Error.Reason, msg.XMLName.Space)
+				return err
+			}
+			if len(strings.TrimSpace(msg.Body)) != 0 {
+				_, err := fmt.Fprintf(v, "%s : %s \n", msg.From, msg.Body)
+				return err
+			}
+			return nil
+		})
+	}
+
+	router.HandleFunc("message", handlerWithGui)
+	if client, err = xmpp.NewClient(clientCfg, router, errorHandler); err != nil {
+		log.Panicln(fmt.Sprintf("Could not create a new client ! %s", err))
+
+	}
+
+	// ==========================
+	// Client connection
+	if err = client.Connect(); err != nil {
+		msg := fmt.Sprintf("%sXMPP connection failed: %s", infoFormat, err)
+		g.Update(func(g *gocui.Gui) error {
+			v, err := g.View(chatLogWindow)
+			fmt.Fprintf(v, msg)
+			return err
+		})
+		fmt.Println("Failed to connect to server. Exiting...")
+		errChan <- servConnFail
+		return
+	}
+
+	// ==========================
+	// Start working
+	updateRosterFromConfig(config)
+	// Sending the default contact in a channel. Default value is the first contact in the list from the config.
+	viewState.currentContact = strings.Split(config.Contacts, configContactSep)[0]
+	// Informing user of the default contact
+	clw, _ := g.View(chatLogWindow)
+	fmt.Fprintf(clw, infoFormat+"Now sending messages to "+viewState.currentContact+" in a private conversation\n")
+	CorrespChan <- viewState.currentContact
+	startMessaging(client, config, g)
+}
+
+func startMessaging(client xmpp.Sender, config *config, g *gocui.Gui) {
+	var text string
+	var correspondent string
+	for {
+		select {
+		case err := <-killChan:
+			if err == disconnectErr {
+				sc := client.(xmpp.StreamClient)
+				sc.Disconnect()
+			} else {
+				logger.Println(err)
+			}
+			return
+		case text = <-textChan:
+			reply := stanza.Message{Attrs: stanza.Attrs{To: correspondent, Type: stanza.MessageTypeChat}, Body: text}
+			if logger != nil {
+				raw, _ := xml.Marshal(reply)
+				logger.Println(string(raw))
+			}
+			err := client.Send(reply)
+			if err != nil {
+				fmt.Printf("There was a problem sending the message : %v", reply)
+				return
+			}
+		case text = <-rawTextChan:
+			if logger != nil {
+				logger.Println(text)
+			}
+			err := client.SendRaw(text)
+			if err != nil {
+				fmt.Printf("There was a problem sending the message : %v", text)
+				return
+			}
+		case crrsp := <-CorrespChan:
+			correspondent = crrsp
+		case <-rosterChan:
+			askForRoster(client, g, config)
+		}
+
+	}
+}
+
+// Only reads and parses the configuration
+func readConfig() *config {
+	viper.SetConfigName(configFileName) // name of config file (without extension)
+	viper.BindPFlags(pflag.CommandLine)
+	viper.AddConfigPath(viper.GetString("c")) // path to look for the config file in
+	err := viper.ReadInConfig()               // Find and read the config file
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+			log.Fatalf("%s %s", err, "Please make sure you give a path to the directory of the config and not to the config itself.")
+		} else {
+			log.Panicln(err)
+		}
+	}
+
+	viper.SetConfigType(configType)
+	var config config
+	err = viper.Unmarshal(&config)
+	if err != nil {
+		panic(fmt.Errorf("Unable to decode Config: %s \n", err))
+	}
+
+	// Check if we have contacts to message
+	if len(strings.TrimSpace(config.Contacts)) == 0 {
+		log.Panicln("You appear to have no contacts to message !")
+	}
+	// Check logging
+	config.LogStanzas[logFilePath] = path.Clean(config.LogStanzas[logFilePath])
+	on, err := strconv.ParseBool(config.LogStanzas[logStanzasOn])
+	if err != nil {
+		log.Panicln(err)
+	}
+	if d, e := isDirectory(config.LogStanzas[logFilePath]); (e != nil || !d) && on {
+		log.Panicln("The log file path could not be found or is not a directory.")
+	}
+
+	return &config
+}
+
+// If an error occurs, this is used to kill the client
+func errorHandler(err error) {
+	killChan <- err
+}
+
+// Read the client roster from the config. This does not check with the server that the roster is correct.
+// If user tries to send a message to someone not registered with the server, the server will return an error.
+func updateRosterFromConfig(config *config) {
+	viewState.contacts = append(strings.Split(config.Contacts, configContactSep), backFromContacts)
+	// Put a "go back" button at the end of the list
+	viewState.contacts = append(viewState.contacts, backFromContacts)
+}
+
+// Updates the menu panel of the view with the current user's roster, by asking the server.
+func askForRoster(client xmpp.Sender, g *gocui.Gui, config *config) {
+	// Craft a roster request
+	req := stanza.NewIQ(stanza.Attrs{From: config.Client[clientJid], Type: stanza.IQTypeGet})
+	req.RosterItems()
+	if logger != nil {
+		m, _ := xml.Marshal(req)
+		logger.Println(string(m))
+	}
+	ctx, _ := context.WithTimeout(context.Background(), 30*time.Second)
+
+	// Send the roster request to the server
+	c, err := client.SendIQ(ctx, req)
+	if err != nil {
+		logger.Panicln(err)
+	}
+
+	// Sending a IQ has a channel spawned to process the response once we receive it.
+	// In order not to block the client, we spawn a goroutine to update the TUI once the server has responded.
+	go func() {
+		serverResp := <-c
+		if logger != nil {
+			m, _ := xml.Marshal(serverResp)
+			logger.Println(string(m))
+		}
+		// Update contacts with the response from the server
+		chlw, _ := g.View(chatLogWindow)
+		if rosterItems, ok := serverResp.Payload.(*stanza.RosterItems); ok {
+			viewState.contacts = []string{}
+			for _, item := range rosterItems.Items {
+				viewState.contacts = append(viewState.contacts, item.Jid)
+			}
+			// Put a "go back" button at the end of the list
+			viewState.contacts = append(viewState.contacts, backFromContacts)
+			fmt.Fprintln(chlw, infoFormat+"Contacts list updated !")
+			return
+		}
+		fmt.Fprintln(chlw, infoFormat+"Failed to update contact list !")
+	}()
+}
+
+func isDirectory(path string) (bool, error) {
+	fileInfo, err := os.Stat(path)
+	if err != nil {
+		return false, err
+	}
+	return fileInfo.IsDir(), err
+}

_examples/xmpp_component/xmpp_component.go

@@ -10,9 +10,12 @@ import (
 
 func main() {
 	opts := xmpp.ComponentOptions{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:8888",
+			Domain:  "service2.localhost",
+		},
 		Domain:   "service2.localhost",
 		Secret:   "mypass",
-		Address:  "localhost:8888",
 		Name:     "Test Component",
 		Category: "gateway",
 		Type:     "service",
@@ -32,7 +35,7 @@ func main() {
 		IQNamespaces("jabber:iq:version").
 		HandlerFunc(handleVersion)
 
-	component, err := xmpp.NewComponent(opts, router)
+	component, err := xmpp.NewComponent(opts, router, handleError)
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
@@ -44,6 +47,10 @@ func main() {
 	log.Fatal(cm.Run())
 }
 
+func handleError(err error) {
+	fmt.Println(err.Error())
+}
+
 func handleMessage(_ xmpp.Sender, p stanza.Packet) {
 	msg, ok := p.(stanza.Message)
 	if !ok {
@@ -54,12 +61,16 @@ func handleMessage(_ xmpp.Sender, p stanza.Packet) {
 
 func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
 	// Type conversion & sanity checks
-	iq, ok := p.(stanza.IQ)
-	if !ok || iq.Type != "get" {
+	iq, ok := p.(*stanza.IQ)
+	if !ok || iq.Type != stanza.IQTypeGet {
 		return
 	}
 
-	iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	// TODO: fix this...
+	if err != nil {
+		return
+	}
 	disco := iqResp.DiscoInfo()
 	disco.AddIdentity(opts.Name, opts.Category, opts.Type)
 	disco.AddFeatures(stanza.NSDiscoInfo, stanza.NSDiscoItems, "jabber:iq:version", "urn:xmpp:delegation:1")
@@ -69,8 +80,8 @@ func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
 // TODO: Handle iq error responses
 func discoItems(c xmpp.Sender, p stanza.Packet) {
 	// Type conversion & sanity checks
-	iq, ok := p.(stanza.IQ)
-	if !ok || iq.Type != "get" {
+	iq, ok := p.(*stanza.IQ)
+	if !ok || iq.Type != stanza.IQTypeGet {
 		return
 	}
 
@@ -79,7 +90,11 @@ func discoItems(c xmpp.Sender, p stanza.Packet) {
 		return
 	}
 
-	iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	// TODO: fix this...
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	if err != nil {
+		return
+	}
 	items := iqResp.DiscoItems()
 
 	if discoItems.Node == "" {
@@ -90,12 +105,15 @@ func discoItems(c xmpp.Sender, p stanza.Packet) {
 
 func handleVersion(c xmpp.Sender, p stanza.Packet) {
 	// Type conversion & sanity checks
-	iq, ok := p.(stanza.IQ)
+	iq, ok := p.(*stanza.IQ)
 	if !ok {
 		return
 	}
 
-	iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	if err != nil {
+		return
+	}
 	iqResp.Version().SetInfo("Fluux XMPP Component", "0.0.1", "")
 	_ = c.Send(iqResp)
 }

_examples/xmpp_component2/README.md

@@ -0,0 +1,4 @@
+# xmpp_component2
+
+
+This program is an example of the simplest XMPP component: it connects to an XMPP server using XEP 114 protocol, perform a discovery query on the server and print the response.

_examples/xmpp_component2/main.go

@@ -0,0 +1,79 @@
+package main
+
+/*
+
+Connect to an XMPP server using XEP 114 protocol, perform a discovery query on the server and print the response
+
+*/
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+)
+
+const (
+	domain  = "mycomponent.localhost"
+	address = "build.vpn.p1:8888"
+)
+
+// Init and return a component
+func makeComponent() *xmpp.Component {
+	opts := xmpp.ComponentOptions{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: address,
+			Domain:  domain,
+		},
+		Domain: domain,
+		Secret: "secret",
+	}
+	router := xmpp.NewRouter()
+	c, err := xmpp.NewComponent(opts, router, handleError)
+	if err != nil {
+		panic(err)
+	}
+	return c
+}
+
+func handleError(err error) {
+	fmt.Println(err.Error())
+}
+
+func main() {
+	c := makeComponent()
+
+	// Connect Component to the server
+	fmt.Printf("Connecting to %v\n", address)
+	err := c.Connect()
+	if err != nil {
+		panic(err)
+	}
+
+	// make a disco iq
+	iqReq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet,
+		From: domain,
+		To:   "localhost",
+		Id:   "my-iq1"})
+	if err != nil {
+		log.Fatalf("failed to create IQ: %v", err)
+	}
+	disco := iqReq.DiscoInfo()
+	iqReq.Payload = disco
+
+	// res is the channel used to receive the result iq
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	res, _ := c.SendIQ(ctx, iqReq)
+
+	select {
+	case iqResponse := <-res:
+		// Got response from server
+		fmt.Print(iqResponse.Payload)
+	case <-time.After(100 * time.Millisecond):
+		cancel()
+		panic("No iq response was received in time")
+	}
+}

_examples/xmpp_echo/xmpp_echo.go

@@ -15,9 +15,11 @@ import (
 
 func main() {
 	config := xmpp.Config{
-		Address:      "localhost:5222",
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:5222",
+		},
 		Jid:          "test@localhost",
-		Password:     "test",
+		Credential:   xmpp.Password("test"),
 		StreamLogger: os.Stdout,
 		Insecure:     true,
 		// TLSConfig: tls.Config{InsecureSkipVerify: true},
@@ -26,7 +28,7 @@ func main() {
 	router := xmpp.NewRouter()
 	router.HandleFunc("message", handleMessage)
 
-	client, err := xmpp.NewClient(config, router)
+	client, err := xmpp.NewClient(&config, router, errorHandler)
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
@@ -49,5 +51,6 @@ func handleMessage(s xmpp.Sender, p stanza.Packet) {
 	_ = s.Send(reply)
 }
 
-// TODO create default command line client to send message or to send an arbitrary XMPP sequence from a file,
-//   (using templates ?)
+func errorHandler(err error) {
+	fmt.Println(err.Error())
+}

_examples/xmpp_jukebox/README.md

@@ -0,0 +1,37 @@
+# Jukebox example  
+
+## Requirements
+- You need mpg123 installed on your computer because the example runs it as a command :
+[Official MPG123 website](https://mpg123.de/)  
+Most linux distributions have a package for it.  
+- You need a soundcloud ID to play a music from the website through mpg123. You currently cannot play music files with this example.  
+Your user ID is available in your account settings on the [soundcloud website](https://soundcloud.com/)  
+**One is provided for convenience.**
+- You need a running jabber server. You can run your local instance of [ejabberd](https://www.ejabberd.im/) for example. 
+- You need a registered user on the running jabber server.
+
+## Run
+You can edit the soundcloud ID in the example file with your own, or use the provided one :
+```go
+const scClientID = "dde6a0075614ac4f3bea423863076b22"
+``` 
+
+To run the example, build it with (while in the example directory) :
+```
+go build xmpp_jukebox.go
+```
+
+then run it with (update the command arguments accordingly):
+```
+./xmpp_jukebox -jid=MY_USERE@MY_DOMAIN/jukebox -password=MY_PASSWORD -address=MY_SERVER:MY_SERVER_PORT
+```
+Make sure to have a resource, for instance "/jukebox", on your jid.
+
+Then you can send the following stanza to "MY_USERE@MY_DOMAIN/jukebox" (with the resource) to play a song (update the soundcloud URL accordingly) :
+```xml
+<iq id="1" to="MY_USERE@MY_DOMAIN/jukebox" type="set">
+    <set xml:lang="en" xmlns="urn:xmpp:iot:control">
+        <string name="url" value="https://soundcloud.com/UPDATE/ME"/>
+    </set>
+</iq>
+```   

_examples/xmpp_jukebox/xmpp_jukebox.go

@@ -3,6 +3,7 @@
 package main
 
 import (
+	"encoding/xml"
 	"flag"
 	"fmt"
 	"log"
@@ -19,7 +20,7 @@ import (
 const scClientID = "dde6a0075614ac4f3bea423863076b22"
 
 func main() {
-	jid := flag.String("jid", "", "jukebok XMPP JID, resource is optional")
+	jid := flag.String("jid", "", "jukebok XMPP Jid, resource is optional")
 	password := flag.String("password", "", "XMPP account password")
 	address := flag.String("address", "", "If needed, XMPP server DNSName or IP and optional port (ie myserver:5222)")
 	flag.Parse()
@@ -32,9 +33,11 @@ func main() {
 
 	// 2. Prepare XMPP client
 	config := xmpp.Config{
-		Address:  *address,
-		Jid:      *jid,
-		Password: *password,
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: *address,
+		},
+		Jid:        *jid,
+		Credential: xmpp.Password(*password),
 		// StreamLogger: os.Stdout,
 		Insecure: true,
 	}
@@ -46,12 +49,12 @@ func main() {
 			handleMessage(s, p, player)
 		})
 	router.NewRoute().
-		Packet("message").
+		Packet("iq").
 		HandlerFunc(func(s xmpp.Sender, p stanza.Packet) {
 			handleIQ(s, p, player)
 		})
 
-	client, err := xmpp.NewClient(config, router)
+	client, err := xmpp.NewClient(&config, router, errorHandler)
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
@@ -59,6 +62,9 @@ func main() {
 	cm := xmpp.NewStreamManager(client, nil)
 	log.Fatal(cm.Run())
 }
+func errorHandler(err error) {
+	fmt.Println(err.Error())
+}
 
 func handleMessage(s xmpp.Sender, p stanza.Packet, player *mpg123.Player) {
 	msg, ok := p.(stanza.Message)
@@ -75,7 +81,7 @@ func handleMessage(s xmpp.Sender, p stanza.Packet, player *mpg123.Player) {
 }
 
 func handleIQ(s xmpp.Sender, p stanza.Packet, player *mpg123.Player) {
-	iq, ok := p.(stanza.IQ)
+	iq, ok := p.(*stanza.IQ)
 	if !ok {
 		return
 	}
@@ -94,7 +100,7 @@ func handleIQ(s xmpp.Sender, p stanza.Packet, player *mpg123.Player) {
 		setResponse := new(stanza.ControlSetResponse)
 		// FIXME: Broken
 		reply := stanza.IQ{Attrs: stanza.Attrs{To: iq.From, Type: "result", Id: iq.Id}, Payload: setResponse}
-		_ = s.Send(reply)
+		_ = s.Send(&reply)
 		// TODO add Soundclound artist / title retrieval
 		sendUserTune(s, "Radiohead", "Spectre")
 	default:
@@ -103,11 +109,29 @@ func handleIQ(s xmpp.Sender, p stanza.Packet, player *mpg123.Player) {
 }
 
 func sendUserTune(s xmpp.Sender, artist string, title string) {
-	tune := stanza.Tune{Artist: artist, Title: title}
-	iq := stanza.NewIQ(stanza.Attrs{Type: "set", Id: "usertune-1", Lang: "en"})
-	payload := stanza.PubSub{Publish: &stanza.Publish{Node: "http://jabber.org/protocol/tune", Item: stanza.Item{Tune: &tune}}}
-	iq.Payload = &payload
-	_ = s.Send(iq)
+	rq, err := stanza.NewPublishItemRq("localhost",
+		"http://jabber.org/protocol/tune",
+		"",
+		stanza.Item{
+			XMLName: xml.Name{Space: "http://jabber.org/protocol/tune", Local: "tune"},
+			Any: &stanza.Node{
+				Nodes: []stanza.Node{
+					{
+						XMLName: xml.Name{Local: "artist"},
+						Content: artist,
+					},
+					{
+						XMLName: xml.Name{Local: "title"},
+						Content: title,
+					},
+				},
+			},
+		})
+	if err != nil {
+		fmt.Printf("failed to build the publish request : %s", err.Error())
+		return
+	}
+	_ = s.Send(rq)
 }
 
 func playSCURL(p *mpg123.Player, rawURL string) {
@@ -115,7 +139,7 @@ func playSCURL(p *mpg123.Player, rawURL string) {
 	// TODO: Maybe we need to check the track itself to get the stream URL from reply ?
 	url := soundcloud.FormatStreamURL(songID)
 
-	_ = p.Play(url)
+	_ = p.Play(strings.ReplaceAll(url, "YOUR_SOUNDCLOUD_CLIENTID", scClientID))
 }
 
 // TODO

_examples/xmpp_oauth2/xmpp_oauth2.go

@@ -0,0 +1,54 @@
+/*
+xmpp_oauth2 is a demo client that connect on an XMPP server using OAuth2 and prints received messages.
+*/
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+)
+
+func main() {
+	config := xmpp.Config{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:5222",
+			// TLSConfig: tls.Config{InsecureSkipVerify: true},
+		},
+		Jid:          "test@localhost",
+		Credential:   xmpp.OAuthToken("OdAIsBlY83SLBaqQoClAn7vrZSHxixT8"),
+		StreamLogger: os.Stdout,
+		// Insecure:     true,
+	}
+
+	router := xmpp.NewRouter()
+	router.HandleFunc("message", handleMessage)
+
+	client, err := xmpp.NewClient(&config, router, errorHandler)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// If you pass the client to a connection manager, it will handle the reconnect policy
+	// for you automatically.
+	cm := xmpp.NewStreamManager(client, nil)
+	log.Fatal(cm.Run())
+}
+
+func errorHandler(err error) {
+	fmt.Println(err.Error())
+}
+
+func handleMessage(s xmpp.Sender, p stanza.Packet) {
+	msg, ok := p.(stanza.Message)
+	if !ok {
+		_, _ = fmt.Fprintf(os.Stdout, "Ignoring packet: %T\n", p)
+		return
+	}
+
+	_, _ = fmt.Fprintf(os.Stdout, "Body = %s - from = %s\n", msg.Body, msg.From)
+}

_examples/xmpp_pubsub_client/README.md

@@ -0,0 +1,17 @@
+# PubSub client example
+
+## Description
+This is a simple example of a client that :
+* Creates a node on a service
+* Subscribes to that node
+* Publishes to that node
+* Gets the notification from the publication and prints it on screen
+
+## Requirements
+You need to have a running jabber server, like [ejabberd](https://www.ejabberd.im/) that supports [XEP-0060](https://xmpp.org/extensions/xep-0060.html).
+
+## How to use
+Just run : 
+```
+    go run xmpp_ps_client.go
+```

_examples/xmpp_pubsub_client/xmpp_ps_client.go

@@ -0,0 +1,278 @@
+package main
+
+import (
+	"context"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+	"log"
+	"time"
+)
+
+const (
+	userJID       = "testuser2@localhost"
+	serverAddress = "localhost:5222"
+	nodeName      = "lel_node"
+	serviceName   = "pubsub.localhost"
+)
+
+var invalidResp = errors.New("invalid response")
+
+func main() {
+
+	config := xmpp.Config{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: serverAddress,
+		},
+		Jid:        userJID,
+		Credential: xmpp.Password("pass123"),
+		// StreamLogger: os.Stdout,
+		Insecure: true,
+	}
+	router := xmpp.NewRouter()
+	router.NewRoute().Packet("message").
+		HandlerFunc(func(s xmpp.Sender, p stanza.Packet) {
+			data, _ := xml.Marshal(p)
+			log.Println("Received a message ! => \n" + string(data))
+		})
+
+	client, err := xmpp.NewClient(&config, router, func(err error) { log.Println(err) })
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// ==========================
+	// Client connection
+	err = client.Connect()
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// ==========================
+	// Create a node
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	createNode(ctx, cancel, client)
+
+	// ================================================================================
+	// Configure the node. This can also be done in a single message with the creation
+	configureNode(ctx, cancel, client)
+
+	// ====================================
+	// Subscribe to this node :
+	subToNode(ctx, cancel, client)
+
+	// ==========================
+	// Publish to that node
+	pubToNode(ctx, cancel, client)
+
+	// =============================
+	// Let's purge the node :
+	purgeRq, _ := stanza.NewPurgeAllItems(serviceName, nodeName)
+	purgeCh, err := client.SendIQ(ctx, purgeRq)
+	if err != nil {
+		log.Fatalf("could not send purge request: %v", err)
+	}
+	select {
+	case purgeResp := <-purgeCh:
+
+		if purgeResp.Type == stanza.IQTypeError {
+			cancel()
+			if vld, err := purgeResp.IsValid(); !vld {
+				log.Fatalf(invalidResp.Error()+" %v"+" reason: %v", purgeResp, err)
+			}
+			log.Fatalf("error while purging node : %s", purgeResp.Error.Text)
+		}
+		log.Println("node successfully purged")
+	case <-time.After(1000 * time.Millisecond):
+		cancel()
+		log.Fatal("No iq response was received in time while purging node")
+	}
+
+	cancel()
+}
+
+func createNode(ctx context.Context, cancel context.CancelFunc, client *xmpp.Client) {
+	rqCreate, err := stanza.NewCreateNode(serviceName, nodeName)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+	createCh, err := client.SendIQ(ctx, rqCreate)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	} else {
+
+		if createCh != nil {
+			select {
+			case respCr := <-createCh:
+				// Got response from server
+				if respCr.Type == stanza.IQTypeError {
+					if vld, err := respCr.IsValid(); !vld {
+						log.Fatalf(invalidResp.Error()+" %+v"+" reason: %s", respCr, err)
+					}
+					if respCr.Error.Reason != "conflict" {
+						log.Fatalf("%+v", respCr.Error.Text)
+					}
+					log.Println(respCr.Error.Text)
+				} else {
+					fmt.Print("successfully created channel")
+				}
+			case <-time.After(100 * time.Millisecond):
+				cancel()
+				log.Fatal("No iq response was received in time while creating node")
+			}
+		}
+	}
+}
+
+func configureNode(ctx context.Context, cancel context.CancelFunc, client *xmpp.Client) {
+	// First, ask for a form with the config options
+	confRq, _ := stanza.NewConfigureNode(serviceName, nodeName)
+	confReqCh, err := client.SendIQ(ctx, confRq)
+	if err != nil {
+		log.Fatalf("could not send iq : %v", err)
+	}
+	select {
+	case confForm := <-confReqCh:
+		// If the request was successful, we now have a form with configuration options to update
+		fields, err := confForm.GetFormFields()
+		if err != nil {
+			log.Fatal("No config fields found !")
+		}
+
+		// These are some common fields expected to be present. Change processing to your liking
+		if fields["pubsub#max_payload_size"] != nil {
+			fields["pubsub#max_payload_size"].ValuesList[0] = "100000"
+		}
+
+		if fields["pubsub#notification_type"] != nil {
+			fields["pubsub#notification_type"].ValuesList[0] = "headline"
+		}
+
+		// Send the modified fields as a form
+		submitConf, err := stanza.NewFormSubmissionOwner(serviceName,
+			nodeName,
+			[]*stanza.Field{
+				fields["pubsub#max_payload_size"],
+				fields["pubsub#notification_type"],
+			})
+
+		c, _ := client.SendIQ(ctx, submitConf)
+		select {
+		case confResp := <-c:
+			if confResp.Type == stanza.IQTypeError {
+				cancel()
+				if vld, err := confResp.IsValid(); !vld {
+					log.Fatalf(invalidResp.Error()+" %v"+" reason: %v", confResp, err)
+				}
+				log.Fatalf("node configuration failed : %s", confResp.Error.Text)
+			}
+			log.Println("node configuration was successful")
+			return
+
+		case <-time.After(300 * time.Millisecond):
+			cancel()
+			log.Fatal("No iq response was received in time while configuring the node")
+		}
+
+	case <-time.After(300 * time.Millisecond):
+		cancel()
+		log.Fatal("No iq response was received in time while asking for the config form")
+	}
+}
+
+func subToNode(ctx context.Context, cancel context.CancelFunc, client *xmpp.Client) {
+	rqSubscribe, err := stanza.NewSubRq(serviceName, stanza.SubInfo{
+		Node: nodeName,
+		Jid:  userJID,
+	})
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+	subRespCh, _ := client.SendIQ(ctx, rqSubscribe)
+	if subRespCh != nil {
+		select {
+		case <-subRespCh:
+			log.Println("Subscribed to the service")
+		case <-time.After(300 * time.Millisecond):
+			cancel()
+			log.Fatal("No iq response was received in time while subscribing")
+		}
+	}
+}
+
+func pubToNode(ctx context.Context, cancel context.CancelFunc, client *xmpp.Client) {
+	pub, err := stanza.NewPublishItemRq(serviceName, nodeName, "", stanza.Item{
+		Publisher: "testuser2",
+		Any: &stanza.Node{
+			XMLName: xml.Name{
+				Space: "http://www.w3.org/2005/Atom",
+				Local: "entry",
+			},
+			Nodes: []stanza.Node{
+				{
+					XMLName: xml.Name{Space: "", Local: "title"},
+					Attrs:   nil,
+					Content: "My pub item title",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "summary"},
+					Attrs:   nil,
+					Content: "My pub item content summary",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "link"},
+					Attrs: []xml.Attr{
+						{
+							Name:  xml.Name{Space: "", Local: "rel"},
+							Value: "alternate",
+						},
+						{
+							Name:  xml.Name{Space: "", Local: "type"},
+							Value: "text/html",
+						},
+						{
+							Name:  xml.Name{Space: "", Local: "href"},
+							Value: "http://denmark.lit/2003/12/13/atom03",
+						},
+					},
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "id"},
+					Attrs:   nil,
+					Content: "My pub item content ID",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "published"},
+					Attrs:   nil,
+					Content: "2003-12-13T18:30:02Z",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "updated"},
+					Attrs:   nil,
+					Content: "2003-12-13T18:30:02Z",
+					Nodes:   nil,
+				},
+			},
+		},
+	})
+
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+	pubRespCh, _ := client.SendIQ(ctx, pub)
+	if pubRespCh != nil {
+		select {
+		case <-pubRespCh:
+			log.Println("Published item to the service")
+		case <-time.After(300 * time.Millisecond):
+			cancel()
+			log.Fatal("No iq response was received in time while publishing")
+		}
+	}
+}

_examples/xmpp_websocket/xmpp_websocket.go

@@ -0,0 +1,52 @@
+/*
+xmpp_websocket is a demo client that connect on an XMPP server using websocket and prints received messages.ß
+*/
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+)
+
+func main() {
+	config := xmpp.Config{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "wss://localhost:5443/ws",
+		},
+		Jid:          "test@localhost",
+		Credential:   xmpp.Password("test"),
+		StreamLogger: os.Stdout,
+	}
+
+	router := xmpp.NewRouter()
+	router.HandleFunc("message", handleMessage)
+
+	client, err := xmpp.NewClient(&config, router, errorHandler)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// If you pass the client to a connection manager, it will handle the reconnect policy
+	// for you automatically.
+	cm := xmpp.NewStreamManager(client, nil)
+	log.Fatal(cm.Run())
+}
+
+func errorHandler(err error) {
+	fmt.Println(err.Error())
+}
+
+func handleMessage(s xmpp.Sender, p stanza.Packet) {
+	msg, ok := p.(stanza.Message)
+	if !ok {
+		_, _ = fmt.Fprintf(os.Stdout, "Ignoring packet: %T\n", p)
+		return
+	}
+
+	_, _ = fmt.Fprintf(os.Stdout, "Body = %s - from = %s\n", msg.Body, msg.From)
+}

auth.go

@@ -10,29 +10,71 @@ import (
 	"gosrc.io/xmpp/stanza"
 )
 
-func authSASL(socket io.ReadWriter, decoder *xml.Decoder, f stanza.StreamFeatures, user string, password string) (err error) {
-	// TODO: Implement other type of SASL Authentication
-	havePlain := false
-	for _, m := range f.Mechanisms.Mechanism {
-		if m == "PLAIN" {
-			havePlain = true
+// Credential is used to pass the type of secret that will be used to connect to XMPP server.
+// It can be either a password or an OAuth 2 bearer token.
+type Credential struct {
+	secret     string
+	mechanisms []string
+}
+
+func Password(pwd string) Credential {
+	credential := Credential{
+		secret:     pwd,
+		mechanisms: []string{"PLAIN"},
+	}
+	return credential
+}
+
+func OAuthToken(token string) Credential {
+	credential := Credential{
+		secret:     token,
+		mechanisms: []string{"X-OAUTH2"},
+	}
+	return credential
+}
+
+// ============================================================================
+// Authentication flow for SASL mechanisms
+
+func authSASL(socket io.ReadWriter, decoder *xml.Decoder, f stanza.StreamFeatures, user string, credential Credential) (err error) {
+	var matchingMech string
+	for _, mech := range credential.mechanisms {
+		if isSupportedMech(mech, f.Mechanisms.Mechanism) {
+			matchingMech = mech
 			break
 		}
 	}
-	if !havePlain {
-		err := fmt.Errorf("PLAIN authentication is not supported by server: %v", f.Mechanisms.Mechanism)
+
+	switch matchingMech {
+	case "PLAIN", "X-OAUTH2":
+		// TODO: Implement other type of SASL mechanisms
+		return authPlain(socket, decoder, matchingMech, user, credential.secret)
+	default:
+		err := fmt.Errorf("no matching authentication (%v) supported by server: %v", credential.mechanisms, f.Mechanisms.Mechanism)
 		return NewConnError(err, true)
 	}
-
-	return authPlain(socket, decoder, user, password)
 }
 
 // Plain authentication: send base64-encoded \x00 user \x00 password
-func authPlain(socket io.ReadWriter, decoder *xml.Decoder, user string, password string) error {
-	raw := "\x00" + user + "\x00" + password
+func authPlain(socket io.ReadWriter, decoder *xml.Decoder, mech string, user string, secret string) error {
+	raw := "\x00" + user + "\x00" + secret
 	enc := make([]byte, base64.StdEncoding.EncodedLen(len(raw)))
 	base64.StdEncoding.Encode(enc, []byte(raw))
-	fmt.Fprintf(socket, "<auth xmlns='%s' mechanism='PLAIN'>%s</auth>", stanza.NSSASL, enc)
+
+	a := stanza.SASLAuth{
+		Mechanism: mech,
+		Value:     string(enc),
+	}
+	data, err := xml.Marshal(a)
+	if err != nil {
+		return err
+	}
+	n, err := socket.Write(data)
+	if err != nil {
+		return err
+	} else if n == 0 {
+		return errors.New("failed to write authSASL nonza to socket : wrote 0 bytes")
+	}
 
 	// Next message should be either success or failure.
 	val, err := stanza.NextPacket(decoder)
@@ -51,3 +93,13 @@ func authPlain(socket io.ReadWriter, decoder *xml.Decoder, user string, password
 	}
 	return err
 }
+
+// isSupportedMech returns true if the mechanism is supported in the provided list.
+func isSupportedMech(mech string, mechanisms []string) bool {
+	for _, m := range mechanisms {
+		if mech == m {
+			return true
+		}
+	}
+	return false
+}

bi_dir_iterator.go

@@ -0,0 +1,12 @@
+package xmpp
+
+type BiDirIterator interface {
+	// Next returns the next element of this iterator, if a response is available within t milliseconds
+	Next(t int) (BiDirIteratorElt, error)
+	// Previous returns the previous element of this iterator, if a response is available within t milliseconds
+	Previous(t int) (BiDirIteratorElt, error)
+}
+
+type BiDirIteratorElt interface {
+	NoOp()
+}

cert_checker.go

@@ -51,7 +51,7 @@ func (c *ServerCheck) Check() error {
 	decoder := xml.NewDecoder(tcpconn)
 
 	// Send stream open tag
-	if _, err = fmt.Fprintf(tcpconn, xmppStreamOpen, c.domain, stanza.NSClient, stanza.NSStream); err != nil {
+	if _, err = fmt.Fprintf(tcpconn, clientStreamOpen, c.domain); err != nil {
 		return err
 	}
 
@@ -79,7 +79,10 @@ func (c *ServerCheck) Check() error {
 	}
 
 	if _, ok := f.DoesStartTLS(); ok {
-		fmt.Fprintf(tcpconn, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>")
+		_, err = fmt.Fprintf(tcpconn, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>")
+		if err != nil {
+			return err
+		}
 
 		var k stanza.TLSProceed
 		if err = decoder.DecodeElement(&k, nil); err != nil {

client.go

@@ -1,11 +1,12 @@
 package xmpp
 
 import (
+	"context"
 	"encoding/xml"
 	"errors"
-	"fmt"
 	"io"
 	"net"
+	"sync"
 	"time"
 
 	"gosrc.io/xmpp/stanza"
@@ -14,22 +15,45 @@ import (
 //=============================================================================
 // EventManager
 
-// ConnState represents the current connection state.
+// SyncConnState represents the current connection state.
+type SyncConnState struct {
+	sync.RWMutex
+	// Current state of the client. Please use the dedicated getter and setter for this field as they are thread safe.
+	state ConnState
+}
 type ConnState = uint8
 
+// getState is a thread-safe getter for the current state
+func (scs *SyncConnState) getState() ConnState {
+	var res ConnState
+	scs.RLock()
+	res = scs.state
+	scs.RUnlock()
+	return res
+}
+
+// setState is a thread-safe setter for the current
+func (scs *SyncConnState) setState(cs ConnState) {
+	scs.Lock()
+	scs.state = cs
+	scs.Unlock()
+}
+
 // This is a the list of events happening on the connection that the
 // client can be notified about.
 const (
 	StateDisconnected ConnState = iota
-	StateConnected
+	StateResuming
 	StateSessionEstablished
 	StateStreamError
+	StatePermanentError
+	InitialPresence = "<presence/>"
 )
 
 // Event is a structure use to convey event changes related to client state. This
 // is for example used to notify the client when the client get disconnected.
 type Event struct {
-	State       ConnState
+	State       SyncConnState
 	Description string
 	StreamError string
 	SMState     SMState
@@ -42,38 +66,53 @@ type SMState struct {
 	Id string
 	// Inbound stanza count
 	Inbound uint
-	// TODO Store location for IP affinity
+
+	// IP affinity
+	preferredReconAddr string
+
+	// Error
+	StreamErrorGroup stanza.StanzaErrorGroup
+
+	// Track sent stanzas
+	*stanza.UnAckQueue
+
 	// TODO Store max and timestamp, to check if we should retry resumption or not
 }
 
 // EventHandler is use to pass events about state of the connection to
 // client implementation.
-type EventHandler func(Event)
+type EventHandler func(Event) error
 
 type EventManager struct {
-	// Store current state
-	CurrentState ConnState
+	// Store current state. Please use "getState" and "setState" to access and/or modify this.
+	CurrentState SyncConnState
 
 	// Callback used to propagate connection state changes
 	Handler EventHandler
 }
 
-func (em EventManager) updateState(state ConnState) {
-	em.CurrentState = state
+// updateState changes the CurrentState in the event manager. The state read is threadsafe but there is no guarantee
+// regarding the triggered callback function.
+func (em *EventManager) updateState(state ConnState) {
+	em.CurrentState.setState(state)
 	if em.Handler != nil {
 		em.Handler(Event{State: em.CurrentState})
 	}
 }
 
-func (em EventManager) disconnected(state SMState) {
-	em.CurrentState = StateDisconnected
+// disconnected changes the CurrentState in the event manager to "disconnected". The state read is threadsafe but there is no guarantee
+// regarding the triggered callback function.
+func (em *EventManager) disconnected(state SMState) {
+	em.CurrentState.setState(StateDisconnected)
 	if em.Handler != nil {
 		em.Handler(Event{State: em.CurrentState, SMState: state})
 	}
 }
 
-func (em EventManager) streamError(error, desc string) {
-	em.CurrentState = StateStreamError
+// streamError changes the CurrentState in the event manager to "streamError". The state read is threadsafe but there is no guarantee
+// regarding the triggered callback function.
+func (em *EventManager) streamError(error, desc string) {
+	em.CurrentState.setState(StateStreamError)
 	if em.Handler != nil {
 		em.Handler(Event{State: em.CurrentState, StreamError: error, Description: desc})
 	}
@@ -82,19 +121,28 @@ func (em EventManager) streamError(error, desc string) {
 // Client
 // ============================================================================
 
+var ErrCanOnlySendGetOrSetIq = errors.New("SendIQ can only send get and set IQ stanzas")
+
 // Client is the main structure used to connect as a client on an XMPP
 // server.
 type Client struct {
 	// Store user defined options and states
-	config Config
+	config *Config
 	// Session gather data that can be accessed by users of this library
-	Session *Session
-	// TCP level connection / can be replaced by a TLS session after starttls
-	conn net.Conn
+	Session   *Session
+	transport Transport
 	// Router is used to dispatch packets
 	router *Router
 	// Track and broadcast connection state
 	EventManager
+	// Handle errors from client execution
+	ErrorHandler func(error)
+
+	// Post connection hook. This will be executed on first connection
+	PostConnectHook func() error
+
+	// Post resume hook. This will be executed after the client resumes a lost connection using StreamManagement (XEP-0198)
+	PostResumeHook func() error
 }
 
 /*
@@ -102,17 +150,20 @@ Setting up the client / Checking the parameters
 */
 
 // NewClient generates a new XMPP client, based on Config passed as parameters.
-// If host is not specified, the DNS SRV should be used to find the host from the domainpart of the JID.
+// If host is not specified, the DNS SRV should be used to find the host from the domain part of the Jid.
 // Default the port to 5222.
-func NewClient(config Config, r *Router) (c *Client, err error) {
-	// Parse JID
-	if config.parsedJid, err = NewJid(config.Jid); err != nil {
+func NewClient(config *Config, r *Router, errorHandler func(error)) (c *Client, err error) {
+	if config.KeepaliveInterval == 0 {
+		config.KeepaliveInterval = time.Second * 30
+	}
+	// Parse Jid
+	if config.parsedJid, err = stanza.NewJid(config.Jid); err != nil {
 		err = errors.New("missing jid")
 		return nil, NewConnError(err, true)
 	}
 
-	if config.Password == "" {
-		err = errors.New("missing password")
+	if config.Credential.secret == "" {
+		err = errors.New("missing credential")
 		return nil, NewConnError(err, true)
 	}
 
@@ -134,66 +185,121 @@ func NewClient(config Config, r *Router) (c *Client, err error) {
 			}
 		}
 	}
-	config.Address = ensurePort(config.Address, 5222)
+	if config.Domain == "" {
+		// Fallback to jid domain
+		config.Domain = config.parsedJid.Domain
+	}
 
 	c = new(Client)
 	c.config = config
 	c.router = r
+	c.ErrorHandler = errorHandler
 
 	if c.config.ConnectTimeout == 0 {
 		c.config.ConnectTimeout = 15 // 15 second as default
 	}
 
+	if config.TransportConfiguration.Domain == "" {
+		config.TransportConfiguration.Domain = config.parsedJid.Domain
+	}
+	c.config.TransportConfiguration.ConnectTimeout = c.config.ConnectTimeout
+	c.transport = NewClientTransport(c.config.TransportConfiguration)
+
+	if config.StreamLogger != nil {
+		c.transport.LogTraffic(config.StreamLogger)
+	}
+
 	return
 }
 
-// Connect triggers actual TCP connection, based on previously defined parameters.
-// Connect simply triggers resumption, with an empty session state.
+// Connect establishes a first time connection to a XMPP server.
+// It calls the PostConnectHook
 func (c *Client) Connect() error {
-	var state SMState
-	return c.Resume(state)
-}
-
-// Resume attempts resuming  a Stream Managed session, based on the provided stream management
-// state.
-func (c *Client) Resume(state SMState) error {
-	var err error
-
-	c.conn, err = net.DialTimeout("tcp", c.config.Address, time.Duration(c.config.ConnectTimeout)*time.Second)
+	err := c.connect()
 	if err != nil {
 		return err
 	}
-	c.updateState(StateConnected)
-
-	// Client is ok, we now open XMPP session
-	if c.conn, c.Session, err = NewSession(c.conn, c.config, state); err != nil {
-		return err
+	// TODO: Do we always want to send initial presence automatically ?
+	// Do we need an option to avoid that or do we rely on client to send the presence itself ?
+	err = c.sendWithWriter(c.transport, []byte(InitialPresence))
+	// Execute the post first connection hook. Typically this holds "ask for roster" and this type of actions.
+	if c.PostConnectHook != nil {
+		err = c.PostConnectHook()
+		if err != nil {
+			return err
+		}
 	}
-	c.updateState(StateSessionEstablished)
 
 	// Start the keepalive go routine
 	keepaliveQuit := make(chan struct{})
-	go keepalive(c.conn, keepaliveQuit)
+	go keepalive(c.transport, c.config.KeepaliveInterval, keepaliveQuit)
 	// Start the receiver go routine
-	state = c.Session.SMState
-	go c.recv(state, keepaliveQuit)
+	go c.recv(keepaliveQuit)
+	return err
+}
 
-	// We're connected and can now receive and send messages.
-	//fmt.Fprintf(client.conn, "<presence xml:lang='en'><show>%s</show><status>%s</status></presence>", "chat", "Online")
-	// TODO: Do we always want to send initial presence automatically ?
-	// Do we need an option to avoid that or do we rely on client to send the presence itself ?
-	fmt.Fprintf(c.Session.streamLogger, "<presence/>")
+// connect establishes an actual TCP connection, based on previously defined parameters, as well as a XMPP session
+func (c *Client) connect() error {
+	var state SMState
+	var err error
+	// This is the TCP connection
+	streamId, err := c.transport.Connect()
+	if err != nil {
+		return err
+	}
+
+	// Client is ok, we now open XMPP session with TLS negotiation if possible and session resume or binding
+	// depending on state.
+	if c.Session, err = NewSession(c, state); err != nil {
+		// Try to get the stream close tag from the server.
+		go func() {
+			for {
+				val, err := stanza.NextPacket(c.transport.GetDecoder())
+				if err != nil {
+					c.ErrorHandler(err)
+					c.disconnected(state)
+					return
+				}
+				switch val.(type) {
+				case stanza.StreamClosePacket:
+					// TCP messages should arrive in order, so we can expect to get nothing more after this occurs
+					c.transport.ReceivedStreamClose()
+					return
+				}
+			}
+		}()
+		c.Disconnect()
+		return err
+	}
+	c.Session.StreamId = streamId
+	c.updateState(StateSessionEstablished)
 
 	return err
 }
 
-func (c *Client) Disconnect() {
-	_ = c.SendRaw("</stream:stream>")
-	// TODO: Add a way to wait for stream close acknowledgement from the server for clean disconnect
-	conn := c.conn
-	if conn != nil {
-		_ = conn.Close()
+// Resume attempts resuming  a Stream Managed session, based on the provided stream management
+// state. See XEP-0198
+func (c *Client) Resume() error {
+	c.EventManager.updateState(StateResuming)
+	err := c.connect()
+	if err != nil {
+		return err
 	}
+	// Execute post reconnect hook. This can be different from the first connection hook, and not trigger roster retrieval
+	// for example.
+	if c.PostResumeHook != nil {
+		err = c.PostResumeHook()
+	}
+	return err
+}
+
+// Disconnect disconnects the client from the server, sending a stream close nonza and closing the TCP connection.
+func (c *Client) Disconnect() error {
+	if c.transport != nil {
+		return c.transport.Close()
+	}
+	// No transport so no connection.
+	return nil
 }
 
 func (c *Client) SetHandler(handler EventHandler) {
@@ -202,7 +308,7 @@ func (c *Client) SetHandler(handler EventHandler) {
 
 // Send marshals XMPP stanza and sends it to the server.
 func (c *Client) Send(packet stanza.Packet) error {
-	conn := c.conn
+	conn := c.transport
 	if conn == nil {
 		return errors.New("client is not connected")
 	}
@@ -212,7 +318,35 @@ func (c *Client) Send(packet stanza.Packet) error {
 		return errors.New("cannot marshal packet " + err.Error())
 	}
 
-	return c.sendWithWriter(c.Session.streamLogger, data)
+	// Store stanza as non-acked as part of stream management
+	// See https://xmpp.org/extensions/xep-0198.html#scenarios
+	if c.config.StreamManagementEnable {
+		if _, ok := packet.(stanza.SMRequest); !ok {
+			toStore := stanza.UnAckedStz{Stz: string(data)}
+			c.Session.SMState.UnAckQueue.Push(&toStore)
+		}
+	}
+
+	return c.sendWithWriter(c.transport, data)
+}
+
+// SendIQ sends an IQ set or get stanza to the server. If a result is received
+// the provided handler function will automatically be called.
+//
+// The provided context should have a timeout to prevent the client from waiting
+// forever for an IQ result. For example:
+//
+//   ctx, _ := context.WithTimeout(context.Background(), 30 * time.Second)
+//   result := <- client.SendIQ(ctx, iq)
+//
+func (c *Client) SendIQ(ctx context.Context, iq *stanza.IQ) (chan stanza.IQ, error) {
+	if iq.Attrs.Type != stanza.IQTypeSet && iq.Attrs.Type != stanza.IQTypeGet {
+		return nil, ErrCanOnlySendGetOrSetIq
+	}
+	if err := c.Send(iq); err != nil {
+		return nil, err
+	}
+	return c.router.NewIQResultRoute(ctx, iq.Attrs.Id), nil
 }
 
 // SendRaw sends an XMPP stanza as a string to the server.
@@ -220,12 +354,18 @@ func (c *Client) Send(packet stanza.Packet) error {
 // disconnect the client. It is up to the user of this method to
 // carefully craft the XML content to produce valid XMPP.
 func (c *Client) SendRaw(packet string) error {
-	conn := c.conn
+	conn := c.transport
 	if conn == nil {
 		return errors.New("client is not connected")
 	}
 
-	return c.sendWithWriter(c.Session.streamLogger, []byte(packet))
+	// Store stanza as non-acked as part of stream management
+	// See https://xmpp.org/extensions/xep-0198.html#scenarios
+	if c.config.StreamManagementEnable {
+		toStore := stanza.UnAckedStz{Stz: packet}
+		c.Session.SMState.UnAckQueue.Push(&toStore)
+	}
+	return c.sendWithWriter(c.transport, []byte(packet))
 }
 
 func (c *Client) sendWithWriter(writer io.Writer, packet []byte) error {
@@ -238,50 +378,62 @@ func (c *Client) sendWithWriter(writer io.Writer, packet []byte) error {
 // Go routines
 
 // Loop: Receive data from server
-func (c *Client) recv(state SMState, keepaliveQuit chan<- struct{}) (err error) {
+func (c *Client) recv(keepaliveQuit chan<- struct{}) {
+	defer close(keepaliveQuit)
+
 	for {
-		val, err := stanza.NextPacket(c.Session.decoder)
+		val, err := stanza.NextPacket(c.transport.GetDecoder())
 		if err != nil {
-			close(keepaliveQuit)
-			c.disconnected(state)
-			return err
+			c.ErrorHandler(err)
+			c.disconnected(c.Session.SMState)
+			return
 		}
 
 		// Handle stream errors
 		switch packet := val.(type) {
 		case stanza.StreamError:
 			c.router.route(c, val)
-			close(keepaliveQuit)
 			c.streamError(packet.Error.Local, packet.Text)
-			return errors.New("stream error: " + packet.Error.Local)
+			c.ErrorHandler(errors.New("stream error: " + packet.Error.Local))
+			// We don't return here, because we want to wait for the stream close tag from the server, or timeout.
+			c.Disconnect()
 		// Process Stream management nonzas
 		case stanza.SMRequest:
 			answer := stanza.SMAnswer{XMLName: xml.Name{
 				Space: stanza.NSStreamManagement,
 				Local: "a",
-			}, H: state.Inbound}
-			c.Send(answer)
+			}, H: c.Session.SMState.Inbound}
+			err = c.Send(answer)
+			if err != nil {
+				c.ErrorHandler(err)
+				return
+			}
+		case stanza.StreamClosePacket:
+			// TCP messages should arrive in order, so we can expect to get nothing more after this occurs
+			c.transport.ReceivedStreamClose()
+			return
 		default:
-			state.Inbound++
+			c.Session.SMState.Inbound++
 		}
-
-		c.router.route(c, val)
+		// Do normal route processing in a go-routine so we can immediately
+		// start receiving other stanzas. This also allows route handlers to
+		// send and receive more stanzas.
+		go c.router.route(c, val)
 	}
 }
 
 // Loop: send whitespace keepalive to server
 // This is use to keep the connection open, but also to detect connection loss
 // and trigger proper client connection shutdown.
-func keepalive(conn net.Conn, quit <-chan struct{}) {
-	// TODO: Make keepalive interval configurable
-	ticker := time.NewTicker(30 * time.Second)
+func keepalive(transport Transport, interval time.Duration, quit <-chan struct{}) {
+	ticker := time.NewTicker(interval)
 	for {
 		select {
 		case <-ticker.C:
-			if n, err := fmt.Fprintf(conn, "\n"); err != nil || n != 1 {
-				// When keep alive fails, we force close the connection. In all cases, the recv will also fail.
+			if err := transport.Ping(); err != nil {
+				// When keepalive fails, we force close the transport. In all cases, the recv will also fail.
 				ticker.Stop()
-				_ = conn.Close()
+				_ = transport.Close()
 				return
 			}
 		case <-quit:

client_internal_test.go

@@ -2,7 +2,16 @@ package xmpp
 
 import (
 	"bytes"
+	"encoding/xml"
+	"fmt"
+	"gosrc.io/xmpp/stanza"
+	"strconv"
 	"testing"
+	"time"
+)
+
+const (
+	streamManagementID = "test-stream_management-id"
 )
 
 func TestClient_Send(t *testing.T) {
@@ -17,3 +26,583 @@ func TestClient_Send(t *testing.T) {
 		t.Errorf("Incorrect value sent to buffer: '%s'", buffer.String())
 	}
 }
+
+// Stream management test.
+// Connection is established, then the server sends supported features and so on.
+// After the bind, client attempts a stream management enablement, and server replies in kind.
+func Test_StreamManagement(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+
+	client, mock := initSrvCliForResumeTests(t, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, false, true)
+		serverDone <- struct{}{}
+	}, testClientStreamManagement, true, true)
+	go func() {
+		var state SMState
+		var err error
+		// Client is ok, we now open XMPP session
+		if client.Session, err = NewSession(client, state); err != nil {
+			t.Fatalf("failed to open XMPP session: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+	waitForEntity(t, serverDone)
+	mock.Stop()
+}
+
+// Absence of stream management test.
+// Connection is established, then the server sends supported features and so on.
+// Client has stream management disabled in its config, and should not ask for it. Server is not set up to reply.
+func Test_NoStreamManagement(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+
+	// Setup Mock server
+	client, mock := initSrvCliForResumeTests(t, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)         // Reset stream
+		sendFeaturesNoStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		serverDone <- struct{}{}
+	}, testClientStreamManagement, true, false)
+
+	go func() {
+		var state SMState
+
+		// Client is ok, we now open XMPP session
+		var err error
+		if client.Session, err = NewSession(client, state); err != nil {
+			t.Fatalf("failed to open XMPP session: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+	waitForEntity(t, serverDone)
+
+	mock.Stop()
+}
+
+func Test_StreamManagementNotSupported(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+
+	client, mock := initSrvCliForResumeTests(t, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)         // Reset stream
+		sendFeaturesNoStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		serverDone <- struct{}{}
+	}, testClientStreamManagement, true, true)
+
+	go func() {
+		var state SMState
+		var err error
+		// Client is ok, we now open XMPP session
+		if client.Session, err = NewSession(client, state); err != nil {
+			t.Fatalf("failed to open XMPP session: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+
+	// Wait for client
+	waitForEntity(t, clientDone)
+
+	// Check if client got a positive stream management response from the server
+	if client.Session.Features.DoesStreamManagement() {
+		t.Fatalf("server does not provide stream management")
+	}
+
+	// Wait for server
+	waitForEntity(t, serverDone)
+	mock.Stop()
+}
+
+func Test_StreamManagementNoResume(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+
+	client, mock := initSrvCliForResumeTests(t, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, false, false)
+		serverDone <- struct{}{}
+	}, testClientStreamManagement, true, true)
+
+	go func() {
+		var state SMState
+		var err error
+		// Client is ok, we now open XMPP session
+		if client.Session, err = NewSession(client, state); err != nil {
+			t.Fatalf("failed to open XMPP session: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+	waitForEntity(t, clientDone)
+	if IsStreamResumable(client) {
+		t.Fatalf("server does not support resumption but client says stream is resumable")
+	}
+	waitForEntity(t, serverDone)
+	mock.Stop()
+}
+
+func Test_StreamManagementResume(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+	// Setup Mock server
+	mock := ServerMock{}
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, false, true)
+		discardPresence(t, sc)
+		serverDone <- struct{}{}
+	})
+
+	// Test / Check result
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:                    "test@localhost",
+		Credential:             Password("test"),
+		Insecure:               true,
+		StreamManagementEnable: true,
+		streamManagementResume: true} // Enable stream management
+
+	var client *Client
+	router := NewRouter()
+	client, err := NewClient(&config, router, clientDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
+	}
+
+	// =================================================================
+	// Connect client, then disconnect it so we can resume the session
+	go func() {
+		err = client.Connect()
+		if err != nil {
+			t.Fatalf("could not connect client to mock server: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+
+	// ===========================================================================================
+	// Check that the client correctly went into "disconnected" state, after being disconnected
+	statusCorrectChan := make(chan struct{})
+	kill := make(chan struct{})
+
+	transp, ok := client.transport.(*XMPPTransport)
+	if !ok {
+		t.Fatalf("problem with client transport ")
+	}
+
+	transp.conn.Close()
+
+	waitForEntity(t, serverDone)
+	mock.Stop()
+
+	go checkClientResumeStatus(client, statusCorrectChan, kill)
+	select {
+	case <-statusCorrectChan:
+	//	Test passed
+	case <-time.After(5 * time.Second):
+		kill <- struct{}{}
+		t.Fatalf("Client is not in disconnected state while it should be. Timed out")
+	}
+
+	// Check if the client can have its connection resumed using its state but also its configuration
+	if !IsStreamResumable(client) {
+		t.Fatalf("should support resumption")
+	}
+
+	// Reboot server. We need to make a new one because (at least for now) the mock server can only have one handler
+	// and they should be different between a first connection and a stream resume since exchanged messages
+	// are different (See XEP-0198)
+	mock2 := ServerMock{}
+	mock2.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		//	Reconnect
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		resumeStream(t, sc)
+		serverDone <- struct{}{}
+	})
+
+	// Reconnect
+	go func() {
+		err = client.Resume()
+		if err != nil {
+			t.Fatalf("could not connect client to mock server: %s", err)
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+	waitForEntity(t, serverDone)
+
+	mock2.Stop()
+}
+
+func Test_StreamManagementFail(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+	// Setup Mock server
+	mock := ServerMock{}
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, true, true)
+		serverDone <- struct{}{}
+	})
+
+	// Test / Check result
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:                    "test@localhost",
+		Credential:             Password("test"),
+		Insecure:               true,
+		StreamManagementEnable: true,
+		streamManagementResume: true} // Enable stream management
+
+	var client *Client
+	router := NewRouter()
+	client, err := NewClient(&config, router, clientDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
+	}
+
+	var state SMState
+	go func() {
+		_, err = client.transport.Connect()
+		if err != nil {
+			return
+		}
+
+		// Client is ok, we now open XMPP session
+		if client.Session, err = NewSession(client, state); err == nil {
+			t.Fatalf("test is supposed to err")
+		}
+		if client.Session.SMState.StreamErrorGroup == nil {
+			t.Fatalf("error was not stored correctly in session state")
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, serverDone)
+	waitForEntity(t, clientDone)
+
+	mock.Stop()
+}
+
+func Test_SendStanzaQueueWithSM(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+	// Setup Mock server
+	mock := ServerMock{}
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, false, true)
+
+		// Ignore the initial presence sent to the server by the client so we can move on to the next packet.
+		discardPresence(t, sc)
+
+		// Used here to silently discard the IQ sent by the client, in order to later trigger a resend
+		skipPacket(t, sc)
+		// Respond to the client ACK request with a number of processed stanzas of 0. This should trigger a resend
+		// of previously ignored stanza to the server, which this handler element will be expecting.
+		respondWithAck(t, sc, 0)
+		serverDone <- struct{}{}
+	})
+
+	// Test / Check result
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:                    "test@localhost",
+		Credential:             Password("test"),
+		Insecure:               true,
+		StreamManagementEnable: true,
+		streamManagementResume: true} // Enable stream management
+
+	var client *Client
+	router := NewRouter()
+	client, err := NewClient(&config, router, clientDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
+	}
+
+	go func() {
+		err = client.Connect()
+
+		client.SendRaw(`<iq id='ls72g593' type='get'>
+  <query xmlns='jabber:iq:roster'/>
+</iq>
+`)
+
+		// Last stanza was discarded silently by the server. Let's ask an ack for it. This should trigger resend as the server
+		// will respond with an acknowledged number of stanzas of 0.
+		r := stanza.SMRequest{}
+		client.Send(r)
+		clientDone <- struct{}{}
+	}()
+	waitForEntity(t, serverDone)
+	waitForEntity(t, clientDone)
+
+	mock.Stop()
+}
+
+//========================================================================
+// Helper functions for tests
+
+func skipPacket(t *testing.T, sc *ServerConn) {
+	var p stanza.IQ
+	se, err := stanza.NextStart(sc.decoder)
+
+	if err != nil {
+		t.Fatalf("cannot read packet: %s", err)
+		return
+	}
+	if err := sc.decoder.DecodeElement(&p, &se); err != nil {
+		t.Fatalf("cannot decode packet: %s", err)
+		return
+	}
+}
+
+func respondWithAck(t *testing.T, sc *ServerConn, h int) {
+
+	//  Mock server reads the ack request
+	var p stanza.SMRequest
+	se, err := stanza.NextStart(sc.decoder)
+
+	if err != nil {
+		t.Fatalf("cannot read packet: %s", err)
+		return
+	}
+	if err := sc.decoder.DecodeElement(&p, &se); err != nil {
+		t.Fatalf("cannot decode packet: %s", err)
+		return
+	}
+
+	// Mock server sends the ack response
+	a := stanza.SMAnswer{
+		H: uint(h),
+	}
+	data, err := xml.Marshal(a)
+	_, err = sc.connection.Write(data)
+	if err != nil {
+		t.Fatalf("failed to send response ack")
+	}
+
+	// Mock server reads the re-sent stanza that was previously discarded intentionally
+	var p2 stanza.IQ
+	nse, err := stanza.NextStart(sc.decoder)
+
+	if err != nil {
+		t.Fatalf("cannot read packet: %s", err)
+		return
+	}
+	if err := sc.decoder.DecodeElement(&p2, &nse); err != nil {
+		t.Fatalf("cannot decode packet: %s", err)
+		return
+	}
+}
+
+func sendFeaturesStreamManagment(t *testing.T, sc *ServerConn) {
+	// This is a basic server, supporting only 2 features after auth: stream management & session binding
+	features := `<stream:features>
+  <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/>
+  <sm xmlns='urn:xmpp:sm:3'/>
+</stream:features>`
+	if _, err := fmt.Fprintln(sc.connection, features); err != nil {
+		t.Fatalf("cannot send stream feature: %s", err)
+	}
+}
+
+func sendFeaturesNoStreamManagment(t *testing.T, sc *ServerConn) {
+	// This is a basic server, supporting only 2 features after auth: stream management & session binding
+	features := `<stream:features>
+  <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/>
+</stream:features>`
+	if _, err := fmt.Fprintln(sc.connection, features); err != nil {
+		t.Fatalf("cannot send stream feature: %s", err)
+	}
+}
+
+// enableStreamManagement is a function for the mock server that can either mock a successful session, or fail depending on
+// the value of the "fail" boolean. True means the session should fail.
+func enableStreamManagement(t *testing.T, sc *ServerConn, fail bool, resume bool) {
+	// Decode element into pointer storage
+	var ed stanza.SMEnable
+	se, err := stanza.NextStart(sc.decoder)
+
+	if err != nil {
+		t.Fatalf("cannot read stream management enable: %s", err)
+		return
+	}
+	if err := sc.decoder.DecodeElement(&ed, &se); err != nil {
+		t.Fatalf("cannot decode stream management enable: %s", err)
+		return
+	}
+
+	if fail {
+		f := stanza.SMFailed{
+			H:                nil,
+			StreamErrorGroup: &stanza.UnexpectedRequest{},
+		}
+		data, err := xml.Marshal(f)
+		if err != nil {
+			t.Fatalf("failed to marshall error response: %s", err)
+		}
+		sc.connection.Write(data)
+	} else {
+		e := &stanza.SMEnabled{
+			Resume: strconv.FormatBool(resume),
+			Id:     streamManagementID,
+		}
+		data, err := xml.Marshal(e)
+		if err != nil {
+			t.Fatalf("failed to marshall error response: %s", err)
+		}
+		sc.connection.Write(data)
+	}
+}
+
+func resumeStream(t *testing.T, sc *ServerConn) {
+	h := uint(0)
+	response := stanza.SMResumed{
+		PrevId: streamManagementID,
+		H:      &h,
+	}
+
+	data, err := xml.Marshal(response)
+	if err != nil {
+		t.Fatalf("failed to marshall stream management enabled response : %s", err)
+	}
+
+	writtenChan := make(chan struct{})
+
+	go func() {
+		sc.connection.Write(data)
+		writtenChan <- struct{}{}
+	}()
+	select {
+	case <-writtenChan:
+		// We're done here
+		return
+	case <-time.After(defaultTimeout):
+		t.Fatalf("failed to write enabled nonza to client")
+	}
+}
+
+func checkClientResumeStatus(client *Client, statusCorrectChan chan struct{}, killChan chan struct{}) {
+	for {
+		if client.CurrentState.getState() == StateDisconnected {
+			statusCorrectChan <- struct{}{}
+		}
+		select {
+		case <-killChan:
+			return
+		case <-time.After(time.Millisecond * 10):
+			//	Keep checking status value
+		}
+	}
+}
+
+func initSrvCliForResumeTests(t *testing.T, serverHandler func(*testing.T, *ServerConn), port int, StreamManagementEnable, StreamManagementResume bool) (*Client, *ServerMock) {
+	mock := &ServerMock{}
+	testServerAddress := fmt.Sprintf("%s:%d", testClientDomain, port)
+
+	mock.Start(t, testServerAddress, serverHandler)
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testServerAddress,
+		},
+		Jid:                    "test@localhost",
+		Credential:             Password("test"),
+		Insecure:               true,
+		StreamManagementEnable: StreamManagementEnable,
+		streamManagementResume: StreamManagementResume}
+
+	var client *Client
+	var err error
+	router := NewRouter()
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
+		t.Fatalf("connect create XMPP client: %s", err)
+	}
+
+	if _, err = client.transport.Connect(); err != nil {
+		t.Fatalf("XMPP connection failed: %s", err)
+	}
+
+	return client, mock
+}
+
+func waitForEntity(t *testing.T, entityDone chan struct{}) {
+	select {
+	case <-entityDone:
+	case <-time.After(defaultTimeout):
+		t.Fatalf("test timed out")
+	}
+}

client_test.go

@@ -1,10 +1,10 @@
 package xmpp
 
 import (
+	"context"
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"net"
 	"testing"
 	"time"
 
@@ -14,23 +14,48 @@ import (
 const (
 	// Default port is not standard XMPP port to avoid interfering
 	// with local running XMPP server
-	testXMPPAddress = "localhost:15222"
-
-	defaultTimeout = 2 * time.Second
+	testXMPPAddress  = "localhost:15222"
+	testClientDomain = "localhost"
 )
 
+func TestEventManager(t *testing.T) {
+	mgr := EventManager{}
+	mgr.updateState(StateResuming)
+	if mgr.CurrentState.getState() != StateResuming {
+		t.Fatal("CurrentState not updated by updateState()")
+	}
+
+	mgr.disconnected(SMState{})
+
+	if mgr.CurrentState.getState() != StateDisconnected {
+		t.Fatalf("CurrentState not reset by disconnected()")
+	}
+
+	mgr.streamError(ErrTLSNotSupported.Error(), "")
+
+	if mgr.CurrentState.getState() != StateStreamError {
+		t.Fatalf("CurrentState not set by streamError()")
+	}
+}
+
 func TestClient_Connect(t *testing.T) {
 	// Setup Mock server
 	mock := ServerMock{}
-	mock.Start(t, testXMPPAddress, handlerConnectSuccess)
+	mock.Start(t, testXMPPAddress, handlerClientConnectSuccess)
 
 	// Test / Check result
-	config := Config{Address: testXMPPAddress, Jid: "test@localhost", Password: "test", Insecure: true}
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+		Insecure:   true}
 
 	var client *Client
 	var err error
 	router := NewRouter()
-	if client, err = NewClient(config, router); err != nil {
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
 		t.Errorf("connect create XMPP client: %s", err)
 	}
 
@@ -44,15 +69,24 @@ func TestClient_Connect(t *testing.T) {
 func TestClient_NoInsecure(t *testing.T) {
 	// Setup Mock server
 	mock := ServerMock{}
-	mock.Start(t, testXMPPAddress, handlerAbortTLS)
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		handlerAbortTLS(t, sc)
+		closeConn(t, sc)
+	})
 
 	// Test / Check result
-	config := Config{Address: testXMPPAddress, Jid: "test@localhost", Password: "test"}
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+	}
 
 	var client *Client
 	var err error
 	router := NewRouter()
-	if client, err = NewClient(config, router); err != nil {
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
 		t.Errorf("cannot create XMPP client: %s", err)
 	}
 
@@ -68,15 +102,24 @@ func TestClient_NoInsecure(t *testing.T) {
 func TestClient_FeaturesTracking(t *testing.T) {
 	// Setup Mock server
 	mock := ServerMock{}
-	mock.Start(t, testXMPPAddress, handlerAbortTLS)
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		handlerAbortTLS(t, sc)
+		closeConn(t, sc)
+	})
 
 	// Test / Check result
-	config := Config{Address: testXMPPAddress, Jid: "test@localhost", Password: "test"}
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+	}
 
 	var client *Client
 	var err error
 	router := NewRouter()
-	if client, err = NewClient(config, router); err != nil {
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
 		t.Errorf("cannot create XMPP client: %s", err)
 	}
 
@@ -91,15 +134,22 @@ func TestClient_FeaturesTracking(t *testing.T) {
 func TestClient_RFC3921Session(t *testing.T) {
 	// Setup Mock server
 	mock := ServerMock{}
-	mock.Start(t, testXMPPAddress, handlerConnectWithSession)
+	mock.Start(t, testXMPPAddress, handlerClientConnectWithSession)
 
 	// Test / Check result
-	config := Config{Address: testXMPPAddress, Jid: "test@localhost", Password: "test", Insecure: true}
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+		Insecure:   true,
+	}
 
 	var client *Client
 	var err error
 	router := NewRouter()
-	if client, err = NewClient(config, router); err != nil {
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
 		t.Errorf("connect create XMPP client: %s", err)
 	}
 
@@ -110,56 +160,454 @@ func TestClient_RFC3921Session(t *testing.T) {
 	mock.Stop()
 }
 
+// Testing sending an IQ to the mock server and reading its response.
+func TestClient_SendIQ(t *testing.T) {
+	done := make(chan struct{})
+	// Handler for Mock server
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerClientConnectSuccess(t, sc)
+		discardPresence(t, sc)
+		respondToIQ(t, sc)
+		done <- struct{}{}
+	}
+	client, mock := mockClientConnection(t, h, testClientIqPort)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	iqReq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "test1@localhost/mremond-mbp", To: defaultServerName, Id: defaultStreamID, Lang: "en"})
+	if err != nil {
+		t.Fatalf("failed to create the IQ request: %v", err)
+	}
+
+	disco := iqReq.DiscoInfo()
+	iqReq.Payload = disco
+
+	// Handle a possible error
+	errChan := make(chan error)
+	errorHandler := func(err error) {
+		errChan <- err
+	}
+	client.ErrorHandler = errorHandler
+	res, err := client.SendIQ(ctx, iqReq)
+	if err != nil {
+		t.Errorf(err.Error())
+	}
+
+	select {
+	case <-res: // If the server responds with an IQ, we pass the test
+	case err := <-errChan: // If the server sends an error, or there is a connection error
+		cancel()
+		t.Fatal(err.Error())
+	case <-time.After(defaultChannelTimeout): // If we timeout
+		cancel()
+		t.Fatal("Failed to receive response, to sent IQ, from mock server")
+	}
+	select {
+	case <-done:
+		mock.Stop()
+	case <-time.After(defaultChannelTimeout):
+		cancel()
+		t.Fatal("The mock server failed to finish its job !")
+	}
+	cancel()
+}
+
+func TestClient_SendIQFail(t *testing.T) {
+	done := make(chan struct{})
+	// Handler for Mock server
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerClientConnectSuccess(t, sc)
+		discardPresence(t, sc)
+		respondToIQ(t, sc)
+		done <- struct{}{}
+	}
+	client, mock := mockClientConnection(t, h, testClientIqFailPort)
+
+	//==================
+	// Create an IQ to send
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	iqReq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "test1@localhost/mremond-mbp", To: defaultServerName, Id: defaultStreamID, Lang: "en"})
+	if err != nil {
+		t.Fatalf("failed to create IQ request: %v", err)
+	}
+	disco := iqReq.DiscoInfo()
+	iqReq.Payload = disco
+	// Removing the id to make the stanza invalid. The IQ constructor makes a random one if none is specified
+	// so we need to overwrite it.
+	iqReq.Id = ""
+
+	// Handle a possible error
+	errChan := make(chan error)
+	errorHandler := func(err error) {
+		errChan <- err
+	}
+	client.ErrorHandler = errorHandler
+	res, _ := client.SendIQ(ctx, iqReq)
+
+	// Test
+	select {
+	case <-res: // If the server responds with an IQ
+		t.Errorf("Server should not respond with an IQ since the request is expected to be invalid !")
+	case <-errChan: // If the server sends an error, the test passes
+	case <-time.After(defaultChannelTimeout): // If we timeout
+		t.Errorf("Failed to receive response, to sent IQ, from mock server")
+	}
+	select {
+	case <-done:
+		mock.Stop()
+	case <-time.After(defaultChannelTimeout):
+		cancel()
+		t.Errorf("The mock server failed to finish its job !")
+	}
+	cancel()
+}
+
+func TestClient_SendRaw(t *testing.T) {
+	done := make(chan struct{})
+	// Handler for Mock server
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerClientConnectSuccess(t, sc)
+		discardPresence(t, sc)
+		respondToIQ(t, sc)
+		closeConn(t, sc)
+		done <- struct{}{}
+	}
+	type testCase struct {
+		req       string
+		shouldErr bool
+		port      int
+	}
+	testRequests := make(map[string]testCase)
+	// Sending a correct IQ of type get. Not supposed to err
+	testRequests["Correct IQ"] = testCase{
+		req:       `<iq type="get" id="91bd0bba-012f-4d92-bb17-5fc41e6fe545" from="test1@localhost/mremond-mbp" to="testServer" lang="en"><query xmlns="http://jabber.org/protocol/disco#info"></query></iq>`,
+		shouldErr: false,
+		port:      testClientRawPort + 100,
+	}
+	// Sending an IQ with a missing ID. Should err
+	testRequests["IQ with missing ID"] = testCase{
+		req:       `<iq type="get" from="test1@localhost/mremond-mbp" to="testServer" lang="en"><query xmlns="http://jabber.org/protocol/disco#info"></query></iq>`,
+		shouldErr: true,
+		port:      testClientRawPort,
+	}
+
+	// A handler for the client.
+	// In the failing test, the server returns a stream error, which triggers this handler, client side.
+	errChan := make(chan error)
+	errHandler := func(err error) {
+		errChan <- err
+	}
+
+	// Tests for all the IQs
+	for name, tcase := range testRequests {
+		t.Run(name, func(st *testing.T) {
+			//Connecting to a mock server, initialized with given port and handler function
+			c, m := mockClientConnection(t, h, tcase.port)
+			c.ErrorHandler = errHandler
+			// Sending raw xml from test case
+			err := c.SendRaw(tcase.req)
+			if err != nil {
+				t.Errorf("Error sending Raw string")
+			}
+			// Just wait a little so the message has time to arrive
+			select {
+			// We don't use the default "long" timeout here because waiting it out means passing the test.
+			case <-time.After(100 * time.Millisecond):
+				c.Disconnect()
+			case err = <-errChan:
+				if err == nil && tcase.shouldErr {
+					t.Errorf("Failed to get closing stream err")
+				} else if err != nil && !tcase.shouldErr {
+					t.Errorf("This test is not supposed to err !")
+				}
+			}
+			select {
+			case <-done:
+				m.Stop()
+			case <-time.After(defaultChannelTimeout):
+				t.Errorf("The mock server failed to finish its job !")
+			}
+		})
+	}
+}
+
+func TestClient_Disconnect(t *testing.T) {
+	c, m := mockClientConnection(t, func(t *testing.T, sc *ServerConn) {
+		handlerClientConnectSuccess(t, sc)
+		closeConn(t, sc)
+	}, testClientBasePort)
+	err := c.transport.Ping()
+	if err != nil {
+		t.Errorf("Could not ping but not disconnected yet")
+	}
+	c.Disconnect()
+	err = c.transport.Ping()
+	if err == nil {
+		t.Errorf("Did not disconnect properly")
+	}
+	m.Stop()
+}
+
+func TestClient_DisconnectStreamManager(t *testing.T) {
+	// Init mock server
+	// Setup Mock server
+	mock := ServerMock{}
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		handlerAbortTLS(t, sc)
+		closeConn(t, sc)
+	})
+
+	// Test / Check result
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+	}
+
+	var client *Client
+	var err error
+	router := NewRouter()
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
+		t.Errorf("cannot create XMPP client: %s", err)
+	}
+
+	sman := NewStreamManager(client, nil)
+	errChan := make(chan error)
+	runSMan := func(errChan chan error) {
+		errChan <- sman.Run()
+	}
+
+	go runSMan(errChan)
+	select {
+	case <-errChan:
+	case <-time.After(defaultChannelTimeout):
+		// When insecure is not allowed:
+		t.Errorf("should fail as insecure connection is not allowed and server does not support TLS")
+	}
+	mock.Stop()
+}
+
+func Test_ClientPostConnectHook(t *testing.T) {
+	done := make(chan struct{})
+	// Handler for Mock server
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerClientConnectSuccess(t, sc)
+		done <- struct{}{}
+	}
+
+	hookChan := make(chan struct{})
+	mock := &ServerMock{}
+	testServerAddress := fmt.Sprintf("%s:%d", testClientDomain, testClientPostConnectHook)
+
+	mock.Start(t, testServerAddress, h)
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testServerAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+		Insecure:   true}
+
+	var client *Client
+	var err error
+	router := NewRouter()
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
+	}
+
+	// The post connection client hook should just write to a channel that we will read later.
+	client.PostConnectHook = func() error {
+		go func() {
+			hookChan <- struct{}{}
+		}()
+		return nil
+	}
+	// Handle a possible error
+	errChan := make(chan error)
+	errorHandler := func(err error) {
+		errChan <- err
+	}
+	client.ErrorHandler = errorHandler
+	if err = client.Connect(); err != nil {
+		t.Errorf("XMPP connection failed: %s", err)
+	}
+
+	// Check if the post connection client hook was correctly called
+	select {
+	case err := <-errChan: // If the server sends an error, or there is a connection error
+		t.Fatal(err.Error())
+	case <-time.After(defaultChannelTimeout): // If we timeout
+		t.Fatal("Failed to call post connection client hook")
+	case <-hookChan:
+		// Test succeeded, channel was written to.
+	}
+
+	select {
+	case <-done:
+		mock.Stop()
+	case <-time.After(defaultChannelTimeout):
+		t.Fatal("The mock server failed to finish its job !")
+	}
+}
+
+func Test_ClientPostReconnectHook(t *testing.T) {
+	hookChan := make(chan struct{})
+	// Setup Mock server
+	mock := ServerMock{}
+	mock.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		bind(t, sc)
+		enableStreamManagement(t, sc, false, true)
+	})
+
+	// Test / Check result
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testXMPPAddress,
+		},
+		Jid:                    "test@localhost",
+		Credential:             Password("test"),
+		Insecure:               true,
+		StreamManagementEnable: true,
+		streamManagementResume: true} // Enable stream management
+
+	var client *Client
+	router := NewRouter()
+	client, err := NewClient(&config, router, clientDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
+	}
+
+	client.PostResumeHook = func() error {
+		go func() {
+			hookChan <- struct{}{}
+		}()
+		return nil
+	}
+
+	err = client.Connect()
+	if err != nil {
+		t.Fatalf("could not connect client to mock server: %s", err)
+	}
+
+	transp, ok := client.transport.(*XMPPTransport)
+	if !ok {
+		t.Fatalf("problem with client transport ")
+	}
+
+	transp.conn.Close()
+	mock.Stop()
+
+	// Check if the client can have its connection resumed using its state but also its configuration
+	if !IsStreamResumable(client) {
+		t.Fatalf("should support resumption")
+	}
+
+	// Reboot server. We need to make a new one because (at least for now) the mock server can only have one handler
+	// and they should be different between a first connection and a stream resume since exchanged messages
+	// are different (See XEP-0198)
+	mock2 := ServerMock{}
+	mock2.Start(t, testXMPPAddress, func(t *testing.T, sc *ServerConn) {
+		//	Reconnect
+		checkClientOpenStream(t, sc)
+
+		sendStreamFeatures(t, sc) // Send initial features
+		readAuth(t, sc.decoder)
+		sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
+
+		checkClientOpenStream(t, sc)       // Reset stream
+		sendFeaturesStreamManagment(t, sc) // Send post auth features
+		resumeStream(t, sc)
+	})
+
+	// Reconnect
+	err = client.Resume()
+	if err != nil {
+		t.Fatalf("could not connect client to mock server: %s", err)
+	}
+
+	select {
+	case <-time.After(defaultChannelTimeout): // If we timeout
+		t.Fatal("Failed to call post connection client hook")
+	case <-hookChan:
+		// Test succeeded, channel was written to.
+	}
+
+	mock2.Stop()
+}
+
 //=============================================================================
 // Basic XMPP Server Mock Handlers.
 
-const serverStreamOpen = "<?xml version='1.0'?><stream:stream to='%s' id='%s' xmlns='%s' xmlns:stream='%s' version='1.0'>"
-
 // Test connection with a basic straightforward workflow
-func handlerConnectSuccess(t *testing.T, c net.Conn) {
-	decoder := xml.NewDecoder(c)
-	checkOpenStream(t, c, decoder)
+func handlerClientConnectSuccess(t *testing.T, sc *ServerConn) {
+	checkClientOpenStream(t, sc)
+	sendStreamFeatures(t, sc) // Send initial features
+	readAuth(t, sc.decoder)
+	sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
 
-	sendStreamFeatures(t, c, decoder) // Send initial features
-	readAuth(t, decoder)
-	fmt.Fprintln(c, "<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>")
+	checkClientOpenStream(t, sc) // Reset stream
+	sendBindFeature(t, sc)       // Send post auth features
+	bind(t, sc)
+}
+
+// closeConn closes the connection on request from the client
+func closeConn(t *testing.T, sc *ServerConn) {
+	for {
+		cls, err := stanza.NextPacket(sc.decoder)
+		if err != nil {
+			t.Errorf("cannot read from socket: %s", err)
+			return
+		}
+		switch cls.(type) {
+		case stanza.StreamClosePacket:
+			sc.connection.Write([]byte(stanza.StreamClose))
+			return
+		}
+	}
 
-	checkOpenStream(t, c, decoder) // Reset stream
-	sendBindFeature(t, c, decoder) // Send post auth features
-	bind(t, c, decoder)
 }
 
 // We expect client will abort on TLS
-func handlerAbortTLS(t *testing.T, c net.Conn) {
-	decoder := xml.NewDecoder(c)
-	checkOpenStream(t, c, decoder)
-	sendStreamFeatures(t, c, decoder) // Send initial features
+func handlerAbortTLS(t *testing.T, sc *ServerConn) {
+	checkClientOpenStream(t, sc)
+	sendStreamFeatures(t, sc) // Send initial features
 }
 
 // Test connection with mandatory session (RFC-3921)
-func handlerConnectWithSession(t *testing.T, c net.Conn) {
-	decoder := xml.NewDecoder(c)
-	checkOpenStream(t, c, decoder)
+func handlerClientConnectWithSession(t *testing.T, sc *ServerConn) {
+	checkClientOpenStream(t, sc)
 
-	sendStreamFeatures(t, c, decoder) // Send initial features
-	readAuth(t, decoder)
-	fmt.Fprintln(c, "<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>")
+	sendStreamFeatures(t, sc) // Send initial features
+	readAuth(t, sc.decoder)
+	sc.connection.Write([]byte("<success xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>"))
 
-	checkOpenStream(t, c, decoder)    // Reset stream
-	sendRFC3921Feature(t, c, decoder) // Send post auth features
-	bind(t, c, decoder)
-	session(t, c, decoder)
+	checkClientOpenStream(t, sc) // Reset stream
+	sendRFC3921Feature(t, sc)    // Send post auth features
+	bind(t, sc)
+	session(t, sc)
 }
 
-func checkOpenStream(t *testing.T, c net.Conn, decoder *xml.Decoder) {
-	c.SetDeadline(time.Now().Add(defaultTimeout))
-	defer c.SetDeadline(time.Time{})
+func checkClientOpenStream(t *testing.T, sc *ServerConn) {
+	err := sc.connection.SetDeadline(time.Now().Add(defaultTimeout))
+	if err != nil {
+		t.Fatalf("failed to set deadline: %v", err)
+	}
+	defer sc.connection.SetDeadline(time.Time{})
 
 	for { // TODO clean up. That for loop is not elegant and I prefer bounded recursion.
 		var token xml.Token
-		token, err := decoder.Token()
+		token, err := sc.decoder.Token()
 		if err != nil {
-			t.Errorf("cannot read next token: %s", err)
+			t.Fatalf("cannot read next token: %s", err)
 		}
 
 		switch elem := token.(type) {
@@ -169,113 +617,43 @@ func checkOpenStream(t *testing.T, c net.Conn, decoder *xml.Decoder) {
 				err = errors.New("xmpp: expected <stream> but got <" + elem.Name.Local + "> in " + elem.Name.Space)
 				return
 			}
-			if _, err := fmt.Fprintf(c, serverStreamOpen, "localhost", "streamid1", stanza.NSClient, stanza.NSStream); err != nil {
+			if _, err := fmt.Fprintf(sc.connection, serverStreamOpen, "localhost", "streamid1", stanza.NSClient, stanza.NSStream); err != nil {
 				t.Errorf("cannot write server stream open: %s", err)
 			}
 			return
 		}
+
 	}
 }
 
-func sendStreamFeatures(t *testing.T, c net.Conn, _ *xml.Decoder) {
-	// This is a basic server, supporting only 1 stream feature: SASL Plain Auth
-	features := `<stream:features>
-  <mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl">
-    <mechanism>PLAIN</mechanism>
-  </mechanisms>
-</stream:features>`
-	if _, err := fmt.Fprintln(c, features); err != nil {
-		t.Errorf("cannot send stream feature: %s", err)
+func mockClientConnection(t *testing.T, serverHandler func(*testing.T, *ServerConn), port int) (*Client, *ServerMock) {
+	mock := &ServerMock{}
+	testServerAddress := fmt.Sprintf("%s:%d", testClientDomain, port)
+
+	mock.Start(t, testServerAddress, serverHandler)
+	config := Config{
+		TransportConfiguration: TransportConfiguration{
+			Address: testServerAddress,
+		},
+		Jid:        "test@localhost",
+		Credential: Password("test"),
+		Insecure:   true}
+
+	var client *Client
+	var err error
+	router := NewRouter()
+	if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
+		t.Errorf("connect create XMPP client: %s", err)
 	}
+
+	if err = client.Connect(); err != nil {
+		t.Errorf("XMPP connection failed: %s", err)
+	}
+
+	return client, mock
 }
 
-// TODO return err in case of error reading the auth params
-func readAuth(t *testing.T, decoder *xml.Decoder) string {
-	se, err := stanza.NextStart(decoder)
-	if err != nil {
-		t.Errorf("cannot read auth: %s", err)
-		return ""
-	}
-
-	var nv interface{}
-	nv = &stanza.SASLAuth{}
-	// Decode element into pointer storage
-	if err = decoder.DecodeElement(nv, &se); err != nil {
-		t.Errorf("cannot decode auth: %s", err)
-		return ""
-	}
-
-	switch v := nv.(type) {
-	case *stanza.SASLAuth:
-		return v.Value
-	}
-	return ""
-}
-
-func sendBindFeature(t *testing.T, c net.Conn, _ *xml.Decoder) {
-	// This is a basic server, supporting only 1 stream feature after auth: resource binding
-	features := `<stream:features>
-  <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/>
-</stream:features>`
-	if _, err := fmt.Fprintln(c, features); err != nil {
-		t.Errorf("cannot send stream feature: %s", err)
-	}
-}
-
-func sendRFC3921Feature(t *testing.T, c net.Conn, _ *xml.Decoder) {
-	// This is a basic server, supporting only 2 features after auth: resource & session binding
-	features := `<stream:features>
-  <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/>
-  <session xmlns='urn:ietf:params:xml:ns:xmpp-session'/>
-</stream:features>`
-	if _, err := fmt.Fprintln(c, features); err != nil {
-		t.Errorf("cannot send stream feature: %s", err)
-	}
-}
-
-func bind(t *testing.T, c net.Conn, decoder *xml.Decoder) {
-	se, err := stanza.NextStart(decoder)
-	if err != nil {
-		t.Errorf("cannot read bind: %s", err)
-		return
-	}
-
-	iq := &stanza.IQ{}
-	// Decode element into pointer storage
-	if err = decoder.DecodeElement(&iq, &se); err != nil {
-		t.Errorf("cannot decode bind iq: %s", err)
-		return
-	}
-
-	// TODO Check all elements
-	switch iq.Payload.(type) {
-	case *stanza.Bind:
-		result := `<iq id='%s' type='result'>
-  <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>
-  	<jid>%s</jid>
-  </bind>
-</iq>`
-		fmt.Fprintf(c, result, iq.Id, "test@localhost/test") // TODO use real JID
-	}
-}
-
-func session(t *testing.T, c net.Conn, decoder *xml.Decoder) {
-	se, err := stanza.NextStart(decoder)
-	if err != nil {
-		t.Errorf("cannot read session: %s", err)
-		return
-	}
-
-	iq := &stanza.IQ{}
-	// Decode element into pointer storage
-	if err = decoder.DecodeElement(&iq, &se); err != nil {
-		t.Errorf("cannot decode session iq: %s", err)
-		return
-	}
-
-	switch iq.Payload.(type) {
-	case *stanza.StreamSession:
-		result := `<iq id='%s' type='result'/>`
-		fmt.Fprintf(c, result, iq.Id)
-	}
+// This really should not be used as is.
+// It's just meant to be a placeholder when error handling is not needed at this level
+func clientDefaultErrorHandler(err error) {
 }

cmd/fluuxmpp/send.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"bufio"
+	"gosrc.io/xmpp/stanza"
 	"os"
 	"strings"
 	"sync"
@@ -31,11 +32,17 @@ func sendxmpp(cmd *cobra.Command, args []string) {
 	msgText := args[1]
 
 	var err error
-	client, err := xmpp.NewClient(xmpp.Config{
-		Jid:      viper.GetString("jid"),
-		Address:  viper.GetString("addr"),
-		Password: viper.GetString("password"),
-	}, xmpp.NewRouter())
+	client, err := xmpp.NewClient(&xmpp.Config{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: viper.GetString("addr"),
+		},
+		Jid:        viper.GetString("jid"),
+		Credential: xmpp.Password(viper.GetString("password")),
+	},
+		xmpp.NewRouter(),
+		func(err error) {
+			log.Println(err)
+		})
 
 	if err != nil {
 		log.Errorf("error when starting xmpp client: %s", err)
@@ -46,7 +53,7 @@ func sendxmpp(cmd *cobra.Command, args []string) {
 	wg.Add(1)
 
 	// FIXME: Remove global variables
-	var mucsToLeave []*xmpp.Jid
+	var mucsToLeave []*stanza.Jid
 
 	cm := xmpp.NewStreamManager(client, func(c xmpp.Sender) {
 		defer wg.Done()
@@ -55,7 +62,7 @@ func sendxmpp(cmd *cobra.Command, args []string) {
 
 		if isMUCRecipient {
 			for _, muc := range receiver {
-				jid, err := xmpp.NewJid(muc)
+				jid, err := stanza.NewJid(muc)
 				if err != nil {
 					log.WithField("muc", muc).Errorf("skipping invalid muc jid: %w", err)
 					continue

cmd/fluuxmpp/xmppmuc.go

@@ -7,7 +7,7 @@ import (
 	"gosrc.io/xmpp/stanza"
 )
 
-func joinMUC(c xmpp.Sender, toJID *xmpp.Jid) error {
+func joinMUC(c xmpp.Sender, toJID *stanza.Jid) error {
 	return c.Send(stanza.Presence{Attrs: stanza.Attrs{To: toJID.Full()},
 		Extensions: []stanza.PresExtension{
 			stanza.MucPresence{
@@ -16,7 +16,7 @@ func joinMUC(c xmpp.Sender, toJID *xmpp.Jid) error {
 	})
 }
 
-func leaveMUCs(c xmpp.Sender, mucsToLeave []*xmpp.Jid) {
+func leaveMUCs(c xmpp.Sender, mucsToLeave []*stanza.Jid) {
 	for _, muc := range mucsToLeave {
 		if err := c.Send(stanza.Presence{Attrs: stanza.Attrs{
 			To:   muc.Full(),

cmd/go.mod

@@ -1,12 +1,12 @@
 module gosrc.io/xmpp/cmd
 
-go 1.12
+go 1.13
 
 require (
 	github.com/bdlm/log v0.1.19
 	github.com/bdlm/std v0.0.0-20180922040903-fd3b596111c7
 	github.com/spf13/cobra v0.0.5
-	github.com/spf13/viper v1.4.0
+	github.com/spf13/viper v1.6.1
 	gosrc.io/xmpp v0.1.1
 )
 

cmd/go.sum

@@ -2,9 +2,12 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/agnivade/wasmbrowsertest v0.3.1/go.mod h1:zQt6ZTdl338xxRaMW395qccVE2eQm0SjC/SDz0mPWQI=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/awesome-gocui/gocui v0.6.0/go.mod h1:1QikxFaPhe2frKeKvEwZEIGia3haiOxOUXKinrv17mA=
+github.com/awesome-gocui/termbox-go v0.0.0-20190427202837-c0aef3d18bcc/go.mod h1:tOy3o5Nf1bA17mnK4W41gD7PS3u4Cv0P0pqFcoWMy8s=
 github.com/bdlm/log v0.1.19 h1:GqVFZC+khJCEbtTmkaDL/araNDwxTeLBmdMK8pbRoBE=
 github.com/bdlm/log v0.1.19/go.mod h1:30V5Zwc5Vt5ePq5rd9KJ6JQ/A5aFUcKzq5fYtO7c9qc=
 github.com/bdlm/std v0.0.0-20180922040903-fd3b596111c7 h1:ggZyn+N8eoBh/qLla2kUtqm/ysjnkbzUxTQY+6LMshY=
@@ -12,6 +15,12 @@ github.com/bdlm/std v0.0.0-20180922040903-fd3b596111c7/go.mod h1:E4vIYZDcEPVbE/D
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/chromedp/cdproto v0.0.0-20190614062957-d6d2f92b486d/go.mod h1:S8mB5wY3vV+vRIzf39xDXsw3XKYewW9X6rW2aEmkrSw=
+github.com/chromedp/cdproto v0.0.0-20190621002710-8cbd498dd7a0/go.mod h1:S8mB5wY3vV+vRIzf39xDXsw3XKYewW9X6rW2aEmkrSw=
+github.com/chromedp/cdproto v0.0.0-20190812224334-39ef923dcb8d/go.mod h1:0YChpVzuLJC5CPr+x3xkHN6Z8KOSXjNbL7qV8Wc4GW0=
+github.com/chromedp/cdproto v0.0.0-20190926234355-1b4886c6fad6/go.mod h1:0YChpVzuLJC5CPr+x3xkHN6Z8KOSXjNbL7qV8Wc4GW0=
+github.com/chromedp/chromedp v0.3.1-0.20190619195644-fd957a4d2901/go.mod h1:mJdvfrVn594N9tfiPecUidF6W5jPRKHymqHfzbobPsM=
+github.com/chromedp/chromedp v0.4.0/go.mod h1:DC3QUn4mJ24dwjcaGQLoZrhm4X/uPHZ6spDbS2uFhm4=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
@@ -20,17 +29,27 @@ github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
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@@ -38,23 +57,34 @@ github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4er
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codecov.yml

@@ -1 +0,0 @@
-comment: off

codeship-services.yml

@@ -1,5 +0,0 @@
-build:
-  build:
-    image: fluux/build
-    dockerfile: Dockerfile
-  encrypted_env_file: codeship.env.encrypted

codeship-steps.yml

@@ -1,5 +0,0 @@
-- type: serial
-  steps:
-  - name: test
-    service: build
-    command: ./test.sh

codeship.env.encrypted

@@ -1 +0,0 @@
-yVKgVFeKW6SSnC/KgLYpfYtTcqqTke1gOIW5GUiVvRijnhweOJiYKFPmwPjpt1FVrg4WVELQUNbxn3lmfyHVVF7r

component.go

@@ -1,21 +1,19 @@
 package xmpp
 
 import (
+	"context"
 	"crypto/sha1"
 	"encoding/hex"
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"io"
-	"net"
-	"time"
-
 	"gosrc.io/xmpp/stanza"
+	"io"
 )
 
-const componentStreamOpen = "<?xml version='1.0'?><stream:stream to='%s' xmlns='%s' xmlns:stream='%s'>"
-
 type ComponentOptions struct {
+	TransportConfiguration
+
 	// =================================
 	// Component Connection Info
 
@@ -23,9 +21,6 @@ type ComponentOptions struct {
 	Domain string
 	// Secret is the "password" used by the XMPP server to secure component access
 	Secret string
-	// Address is the XMPP Host and port to connect to. Host is of
-	// the form 'serverhost:port' i.e "localhost:8888"
-	Address string
 
 	// =================================
 	// Component discovery
@@ -50,58 +45,52 @@ type Component struct {
 	ComponentOptions
 	router *Router
 
-	// TCP level connection
-	conn net.Conn
+	transport Transport
 
 	// read / write
-	socketProxy io.ReadWriter // TODO
-	decoder     *xml.Decoder
+	socketProxy  io.ReadWriter // TODO
+	ErrorHandler func(error)
 }
 
-func NewComponent(opts ComponentOptions, r *Router) (*Component, error) {
-	c := Component{ComponentOptions: opts, router: r}
+func NewComponent(opts ComponentOptions, r *Router, errorHandler func(error)) (*Component, error) {
+	c := Component{ComponentOptions: opts, router: r, ErrorHandler: errorHandler}
 	return &c, nil
 }
 
 // Connect triggers component connection to XMPP server component port.
 // TODO: Failed handshake should be a permanent error
 func (c *Component) Connect() error {
-	var state SMState
-	return c.Resume(state)
+	return c.Resume()
 }
-func (c *Component) Resume(sm SMState) error {
-	var conn net.Conn
+
+func (c *Component) Resume() error {
 	var err error
-	if conn, err = net.DialTimeout("tcp", c.Address, time.Duration(5)*time.Second); err != nil {
-		return err
+	var streamId string
+	if c.ComponentOptions.TransportConfiguration.Domain == "" {
+		c.ComponentOptions.TransportConfiguration.Domain = c.ComponentOptions.Domain
 	}
-	c.conn = conn
-	c.updateState(StateConnected)
-
-	// 1. Send stream open tag
-	if _, err := fmt.Fprintf(conn, componentStreamOpen, c.Domain, stanza.NSComponent, stanza.NSStream); err != nil {
-		c.updateState(StateStreamError)
-		return NewConnError(errors.New("cannot send stream open "+err.Error()), false)
-	}
-	c.decoder = xml.NewDecoder(conn)
-
-	// 2. Initialize xml decoder and extract streamID from reply
-	streamId, err := stanza.InitStream(c.decoder)
+	c.transport, err = NewComponentTransport(c.ComponentOptions.TransportConfiguration)
 	if err != nil {
-		c.updateState(StateStreamError)
-		return NewConnError(errors.New("cannot init decoder "+err.Error()), false)
+		c.updateState(StatePermanentError)
+		return NewConnError(err, true)
 	}
 
-	// 3. Authentication
-	if _, err := fmt.Fprintf(conn, "<handshake>%s</handshake>", c.handshake(streamId)); err != nil {
+	if streamId, err = c.transport.Connect(); err != nil {
+		c.updateState(StatePermanentError)
+		return NewConnError(err, true)
+	}
+
+	// Authentication
+	if err := c.sendWithWriter(c.transport, []byte(fmt.Sprintf("<handshake>%s</handshake>", c.handshake(streamId)))); err != nil {
 		c.updateState(StateStreamError)
+
 		return NewConnError(errors.New("cannot send handshake "+err.Error()), false)
 	}
 
-	// 4. Check server response for authentication
-	val, err := stanza.NextPacket(c.decoder)
+	// Check server response for authentication
+	val, err := stanza.NextPacket(c.transport.GetDecoder())
 	if err != nil {
-		c.updateState(StateDisconnected)
+		c.updateState(StatePermanentError)
 		return NewConnError(err, true)
 	}
 
@@ -113,20 +102,20 @@ func (c *Component) Resume(sm SMState) error {
 		// Start the receiver go routine
 		c.updateState(StateSessionEstablished)
 		go c.recv()
-		return nil
+		return err // Should be empty at this point
 	default:
-		c.updateState(StateStreamError)
+		c.updateState(StatePermanentError)
 		return NewConnError(errors.New("expecting handshake result, got "+v.Name()), true)
 	}
 }
 
-func (c *Component) Disconnect() {
-	_ = c.SendRaw("</stream:stream>")
+func (c *Component) Disconnect() error {
 	// TODO: Add a way to wait for stream close acknowledgement from the server for clean disconnect
-	conn := c.conn
-	if conn != nil {
-		_ = conn.Close()
+	if c.transport != nil {
+		return c.transport.Close()
 	}
+	// No transport so no connection.
+	return nil
 }
 
 func (c *Component) SetHandler(handler EventHandler) {
@@ -134,20 +123,26 @@ func (c *Component) SetHandler(handler EventHandler) {
 }
 
 // Receiver Go routine receiver
-func (c *Component) recv() (err error) {
+func (c *Component) recv() {
 	for {
-		val, err := stanza.NextPacket(c.decoder)
+		val, err := stanza.NextPacket(c.transport.GetDecoder())
 		if err != nil {
 			c.updateState(StateDisconnected)
-			return err
+			c.ErrorHandler(err)
+			return
 		}
-
 		// Handle stream errors
 		switch p := val.(type) {
 		case stanza.StreamError:
 			c.router.route(c, val)
 			c.streamError(p.Error.Local, p.Text)
-			return errors.New("stream error: " + p.Error.Local)
+			c.ErrorHandler(errors.New("stream error: " + p.Error.Local))
+			// We don't return here, because we want to wait for the stream close tag from the server, or timeout.
+			c.Disconnect()
+		case stanza.StreamClosePacket:
+			// TCP messages should arrive in order, so we can expect to get nothing more after this occurs
+			c.transport.ReceivedStreamClose()
+			return
 		}
 		c.router.route(c, val)
 	}
@@ -155,8 +150,8 @@ func (c *Component) recv() (err error) {
 
 // Send marshalls XMPP stanza and sends it to the server.
 func (c *Component) Send(packet stanza.Packet) error {
-	conn := c.conn
-	if conn == nil {
+	transport := c.transport
+	if transport == nil {
 		return errors.New("component is not connected")
 	}
 
@@ -165,24 +160,49 @@ func (c *Component) Send(packet stanza.Packet) error {
 		return errors.New("cannot marshal packet " + err.Error())
 	}
 
-	if _, err := fmt.Fprintf(conn, string(data)); err != nil {
+	if err := c.sendWithWriter(transport, data); err != nil {
 		return errors.New("cannot send packet " + err.Error())
 	}
 	return nil
 }
 
+func (c *Component) sendWithWriter(writer io.Writer, packet []byte) error {
+	var err error
+	_, err = writer.Write(packet)
+	return err
+}
+
+// SendIQ sends an IQ set or get stanza to the server. If a result is received
+// the provided handler function will automatically be called.
+//
+// The provided context should have a timeout to prevent the client from waiting
+// forever for an IQ result. For example:
+//
+//   ctx, _ := context.WithTimeout(context.Background(), 30 * time.Second)
+//   result := <- client.SendIQ(ctx, iq)
+//
+func (c *Component) SendIQ(ctx context.Context, iq *stanza.IQ) (chan stanza.IQ, error) {
+	if iq.Attrs.Type != stanza.IQTypeSet && iq.Attrs.Type != stanza.IQTypeGet {
+		return nil, ErrCanOnlySendGetOrSetIq
+	}
+	if err := c.Send(iq); err != nil {
+		return nil, err
+	}
+	return c.router.NewIQResultRoute(ctx, iq.Attrs.Id), nil
+}
+
 // SendRaw sends an XMPP stanza as a string to the server.
 // It can be invalid XML or XMPP content. In that case, the server will
 // disconnect the component. It is up to the user of this method to
 // carefully craft the XML content to produce valid XMPP.
 func (c *Component) SendRaw(packet string) error {
-	conn := c.conn
-	if conn == nil {
+	transport := c.transport
+	if transport == nil {
 		return errors.New("component is not connected")
 	}
 
 	var err error
-	_, err = fmt.Fprintf(c.conn, packet)
+	err = c.sendWithWriter(transport, []byte(packet))
 	return err
 }
 

component_test.go

@@ -1,7 +1,22 @@
 package xmpp
 
 import (
+	"context"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"strings"
 	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"gosrc.io/xmpp/stanza"
+)
+
+// Tests are ran in parallel, so each test creating a server must use a different port so we do not get any
+// conflict. Using iota for this should do the trick.
+const (
+	defaultChannelTimeout = 5 * time.Second
 )
 
 func TestHandshake(t *testing.T) {
@@ -20,8 +35,103 @@ func TestHandshake(t *testing.T) {
 	}
 }
 
-func TestGenerateHandshake(t *testing.T) {
-	// TODO
+// Tests connection process with a handshake exchange
+// Tests multiple session IDs. All serverConnections should generate a unique stream ID
+func TestGenerateHandshakeId(t *testing.T) {
+	clientDone := make(chan struct{})
+	serverDone := make(chan struct{})
+	// Using this array with a channel to make a queue of values to test
+	// These are stream IDs that will be used to test the connection process, mixing them with the "secret" to generate
+	// some handshake value
+	var uuidsArray = [5]string{}
+	for i := 1; i < len(uuidsArray); i++ {
+		id, _ := uuid.NewRandom()
+		uuidsArray[i] = id.String()
+	}
+
+	// Channel to pass stream IDs as a queue
+	var uchan = make(chan string, len(uuidsArray))
+	// Populate test channel
+	for _, elt := range uuidsArray {
+		uchan <- elt
+	}
+
+	// Performs a Component connection with a handshake. It expects to have an ID sent its way through the "uchan"
+	// channel of this file. Otherwise it will hang for ever.
+	h := func(t *testing.T, sc *ServerConn) {
+		checkOpenStreamHandshakeID(t, sc, <-uchan)
+		readHandshakeComponent(t, sc.decoder)
+		sc.connection.Write([]byte("<handshake/>")) // That's all the server needs to return (see xep-0114)
+		serverDone <- struct{}{}
+	}
+
+	// Init mock server
+	testComponentAddess := fmt.Sprintf("%s:%d", testComponentDomain, testHandshakePort)
+	mock := ServerMock{}
+	mock.Start(t, testComponentAddess, h)
+
+	// Init component
+	opts := ComponentOptions{
+		TransportConfiguration: TransportConfiguration{
+			Address: testComponentAddess,
+			Domain:  "localhost",
+		},
+		Domain:   testComponentDomain,
+		Secret:   "mypass",
+		Name:     "Test Component",
+		Category: "gateway",
+		Type:     "service",
+	}
+	router := NewRouter()
+	c, err := NewComponent(opts, router, componentDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("%+v", err)
+	}
+	c.transport, err = NewComponentTransport(c.ComponentOptions.TransportConfiguration)
+	if err != nil {
+		t.Errorf("%+v", err)
+	}
+
+	// Try connecting, and storing the resulting streamID in a map.
+	go func() {
+		m := make(map[string]bool)
+		for range uuidsArray {
+			idChan := make(chan string)
+			go func() {
+				streamId, err := c.transport.Connect()
+				if err != nil {
+					t.Fatalf("failed to mock component connection to get a handshake: %s", err)
+				}
+				idChan <- streamId
+			}()
+
+			var streamId string
+			select {
+			case streamId = <-idChan:
+			case <-time.After(defaultTimeout):
+				t.Fatalf("test timed out")
+			}
+
+			hs := stanza.Handshake{
+				Value: c.handshake(streamId),
+			}
+			m[hs.Value] = true
+			hsRaw, err := xml.Marshal(hs)
+			if err != nil {
+				t.Fatalf("could not marshal handshake: %s", err)
+			}
+			c.SendRaw(string(hsRaw))
+			waitForEntity(t, serverDone)
+			c.transport.Close()
+		}
+		if len(uuidsArray) != len(m) {
+			t.Errorf("Handshake does not produce a unique id. Expected: %d unique ids, got: %d", len(uuidsArray), len(m))
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+	mock.Stop()
 }
 
 // Test that NewStreamManager can accept a Component.
@@ -30,3 +140,373 @@ func TestGenerateHandshake(t *testing.T) {
 func TestStreamManager(t *testing.T) {
 	NewStreamManager(&Component{}, nil)
 }
+
+// Tests that the decoder is properly initialized when connecting a component to a server.
+// The decoder is expected to be built after a valid connection
+// Based on the xmpp_component example.
+func TestDecoder(t *testing.T) {
+	c, _ := mockComponentConnection(t, testDecoderPort, handlerForComponentHandshakeDefaultID)
+	if c.transport.GetDecoder() == nil {
+		t.Errorf("Failed to initialize decoder. Decoder is nil.")
+	}
+}
+
+// Tests sending an IQ to the server, and getting the response
+func TestSendIq(t *testing.T) {
+	serverDone := make(chan struct{})
+	clientDone := make(chan struct{})
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerForComponentIQSend(t, sc)
+		serverDone <- struct{}{}
+	}
+
+	//Connecting to a mock server, initialized with given port and handler function
+	c, m := mockComponentConnection(t, testSendIqPort, h)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	iqReq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "test1@localhost/mremond-mbp", To: defaultServerName, Id: defaultStreamID, Lang: "en"})
+	if err != nil {
+		t.Fatalf("failed to create IQ request: %v", err)
+	}
+	disco := iqReq.DiscoInfo()
+	iqReq.Payload = disco
+
+	// Handle a possible error
+	errChan := make(chan error)
+	errorHandler := func(err error) {
+		errChan <- err
+	}
+	c.ErrorHandler = errorHandler
+
+	go func() {
+		var res chan stanza.IQ
+		res, _ = c.SendIQ(ctx, iqReq)
+
+		select {
+		case <-res:
+		case err := <-errChan:
+			t.Fatalf(err.Error())
+		}
+		clientDone <- struct{}{}
+	}()
+
+	waitForEntity(t, clientDone)
+	waitForEntity(t, serverDone)
+
+	cancel()
+	m.Stop()
+}
+
+// Checking that error handling is done properly client side when an invalid IQ is sent and the server responds in kind.
+func TestSendIqFail(t *testing.T) {
+	done := make(chan struct{})
+	h := func(t *testing.T, sc *ServerConn) {
+		handlerForComponentIQSend(t, sc)
+		done <- struct{}{}
+	}
+	//Connecting to a mock server, initialized with given port and handler function
+	c, m := mockComponentConnection(t, testSendIqFailPort, h)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	iqReq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "test1@localhost/mremond-mbp", To: defaultServerName, Id: defaultStreamID, Lang: "en"})
+	if err != nil {
+		t.Fatalf("failed to create IQ request: %v", err)
+	}
+
+	// Removing the id to make the stanza invalid. The IQ constructor makes a random one if none is specified
+	// so we need to overwrite it.
+	iqReq.Id = ""
+	disco := iqReq.DiscoInfo()
+	iqReq.Payload = disco
+
+	errChan := make(chan error)
+	errorHandler := func(err error) {
+		errChan <- err
+	}
+	c.ErrorHandler = errorHandler
+
+	var res chan stanza.IQ
+	res, _ = c.SendIQ(ctx, iqReq)
+
+	select {
+	case r := <-res: // Do we get an IQ response from the server ?
+		t.Errorf("We should not be getting an IQ response here : this should fail !")
+		fmt.Println(r)
+	case <-errChan: // Do we get a stream error from the server ?
+		// If we get an error from the server, the test passes.
+	case <-time.After(defaultChannelTimeout): // Timeout ?
+		t.Errorf("Failed to receive response, to sent IQ, from mock server")
+	}
+
+	select {
+	case <-done:
+		m.Stop()
+	case <-time.After(defaultChannelTimeout):
+		t.Errorf("The mock server failed to finish its job !")
+	}
+	cancel()
+}
+
+// Tests sending raw xml to the mock server.
+// Right now, the server response is not checked and an err is passed in a channel if the test is supposed to err.
+// In this test, we use IQs
+func TestSendRaw(t *testing.T) {
+	done := make(chan struct{})
+	// Handler for the mock server
+	h := func(t *testing.T, sc *ServerConn) {
+		// Completes the connection by exchanging handshakes
+		handlerForComponentHandshakeDefaultID(t, sc)
+		respondToIQ(t, sc)
+		done <- struct{}{}
+	}
+
+	type testCase struct {
+		req       string
+		shouldErr bool
+		port      int
+	}
+	testRequests := make(map[string]testCase)
+	// Sending a correct IQ of type get. Not supposed to err
+	testRequests["Correct IQ"] = testCase{
+		req:       `<iq type="get" id="91bd0bba-012f-4d92-bb17-5fc41e6fe545" from="test1@localhost/mremond-mbp" to="testServer" lang="en"><query xmlns="http://jabber.org/protocol/disco#info"></query></iq>`,
+		shouldErr: false,
+		port:      testSendRawPort + 100,
+	}
+	// Sending an IQ with a missing ID. Should err
+	testRequests["IQ with missing ID"] = testCase{
+		req:       `<iq type="get" from="test1@localhost/mremond-mbp" to="testServer" lang="en"><query xmlns="http://jabber.org/protocol/disco#info"></query></iq>`,
+		shouldErr: true,
+		port:      testSendRawPort + 200,
+	}
+
+	// A handler for the component.
+	// In the failing test, the server returns a stream error, which triggers this handler, component side.
+	errChan := make(chan error)
+	errHandler := func(err error) {
+		errChan <- err
+	}
+
+	// Tests for all the IQs
+	for name, tcase := range testRequests {
+		t.Run(name, func(st *testing.T) {
+			//Connecting to a mock server, initialized with given port and handler function
+			c, m := mockComponentConnection(t, tcase.port, h)
+			c.ErrorHandler = errHandler
+			// Sending raw xml from test case
+			err := c.SendRaw(tcase.req)
+			if err != nil {
+				t.Errorf("Error sending Raw string")
+			}
+			// Just wait a little so the message has time to arrive
+			select {
+			// We don't use the default "long" timeout here because waiting it out means passing the test.
+			case <-time.After(200 * time.Millisecond):
+			case err = <-errChan:
+				if err == nil && tcase.shouldErr {
+					t.Errorf("Failed to get closing stream err")
+				} else if err != nil && !tcase.shouldErr {
+					t.Errorf("This test is not supposed to err ! => %s", err.Error())
+				}
+			}
+			c.transport.Close()
+			select {
+			case <-done:
+				m.Stop()
+			case <-time.After(defaultChannelTimeout):
+				t.Errorf("The mock server failed to finish its job !")
+			}
+		})
+	}
+}
+
+// Tests the Disconnect method for Components
+func TestDisconnect(t *testing.T) {
+	c, m := mockComponentConnection(t, testDisconnectPort, handlerForComponentHandshakeDefaultID)
+	err := c.transport.Ping()
+	if err != nil {
+		t.Errorf("Could not ping but not disconnected yet")
+	}
+	c.Disconnect()
+	err = c.transport.Ping()
+	if err == nil {
+		t.Errorf("Did not disconnect properly")
+	}
+	m.Stop()
+}
+
+// Tests that a streamManager successfully disconnects when a handshake fails between the component and the server.
+func TestStreamManagerDisconnect(t *testing.T) {
+	// Init mock server
+	testComponentAddress := fmt.Sprintf("%s:%d", testComponentDomain, testSManDisconnectPort)
+	mock := ServerMock{}
+	// Handler fails the handshake, which is currently the only option to disconnect completely when using a streamManager
+	// a failed handshake being a permanent error, except for a "conflict"
+	mock.Start(t, testComponentAddress, handlerComponentFailedHandshakeDefaultID)
+
+	//==================================
+	// Create Component to connect to it
+	c := makeBasicComponent(defaultComponentName, testComponentAddress, t)
+
+	//========================================
+	// Connect the new Component to the server
+	cm := NewStreamManager(c, nil)
+	errChan := make(chan error)
+	runSMan := func(errChan chan error) {
+		errChan <- cm.Run()
+	}
+
+	go runSMan(errChan)
+	select {
+	case <-errChan:
+	case <-time.After(100 * time.Millisecond):
+		t.Errorf("The component and server seem to still be connected while they should not.")
+	}
+	mock.Stop()
+}
+
+//=============================================================================
+// Basic XMPP Server Mock Handlers.
+
+//===============================
+// Init mock server and connection
+// Creating a mock server and connecting a Component to it. Initialized with given port and handler function
+// The Component and mock are both returned
+func mockComponentConnection(t *testing.T, port int, handler func(t *testing.T, sc *ServerConn)) (*Component, *ServerMock) {
+	// Init mock server
+	testComponentAddress := fmt.Sprintf("%s:%d", testComponentDomain, port)
+	mock := &ServerMock{}
+	mock.Start(t, testComponentAddress, handler)
+
+	//==================================
+	// Create Component to connect to it
+	c := makeBasicComponent(defaultComponentName, testComponentAddress, t)
+
+	//========================================
+	// Connect the new Component to the server
+	err := c.Connect()
+	if err != nil {
+		t.Errorf("%+v", err)
+	}
+
+	// Now that the Component is connected, let's set the xml.Decoder for the server
+
+	return c, mock
+}
+
+func makeBasicComponent(name string, mockServerAddr string, t *testing.T) *Component {
+	opts := ComponentOptions{
+		TransportConfiguration: TransportConfiguration{
+			Address: mockServerAddr,
+			Domain:  "localhost",
+		},
+		Domain:   testComponentDomain,
+		Secret:   "mypass",
+		Name:     name,
+		Category: "gateway",
+		Type:     "service",
+	}
+	router := NewRouter()
+	c, err := NewComponent(opts, router, componentDefaultErrorHandler)
+	if err != nil {
+		t.Errorf("%+v", err)
+	}
+	c.transport, err = NewComponentTransport(c.ComponentOptions.TransportConfiguration)
+	if err != nil {
+		t.Errorf("%+v", err)
+	}
+	return c
+}
+
+// This really should not be used as is.
+// It's just meant to be a placeholder when error handling is not needed at this level
+func componentDefaultErrorHandler(err error) {
+
+}
+
+// Sends IQ response to Component request.
+// No parsing of the request here. We just check that it's valid, and send the default response.
+func handlerForComponentIQSend(t *testing.T, sc *ServerConn) {
+	// Completes the connection by exchanging handshakes
+	handlerForComponentHandshakeDefaultID(t, sc)
+	respondToIQ(t, sc)
+}
+
+// Used for ID and handshake related tests
+func checkOpenStreamHandshakeID(t *testing.T, sc *ServerConn, streamID string) {
+	err := sc.connection.SetDeadline(time.Now().Add(defaultTimeout))
+	if err != nil {
+		t.Fatalf("failed to set deadline: %v", err)
+	}
+	defer sc.connection.SetDeadline(time.Time{})
+
+	for { // TODO clean up. That for loop is not elegant and I prefer bounded recursion.
+		token, err := sc.decoder.Token()
+		if err != nil {
+			t.Errorf("cannot read next token: %s", err)
+		}
+
+		switch elem := token.(type) {
+		// Wait for first startElement
+		case xml.StartElement:
+			if elem.Name.Space != stanza.NSStream || elem.Name.Local != "stream" {
+				err = errors.New("xmpp: expected <stream> but got <" + elem.Name.Local + "> in " + elem.Name.Space)
+				return
+			}
+			if _, err := fmt.Fprintf(sc.connection, serverStreamOpen, "localhost", streamID, stanza.NSComponent, stanza.NSStream); err != nil {
+				t.Errorf("cannot write server stream open: %s", err)
+			}
+			return
+		}
+	}
+}
+
+func checkOpenStreamHandshakeDefaultID(t *testing.T, sc *ServerConn) {
+	checkOpenStreamHandshakeID(t, sc, defaultStreamID)
+}
+
+// Performs a Component connection with a handshake. It uses a default ID defined in this file as a constant.
+// This handler is supposed to fail by sending a "message" stanza instead of a <handshake/> stanza to finalize the handshake.
+func handlerComponentFailedHandshakeDefaultID(t *testing.T, sc *ServerConn) {
+	checkOpenStreamHandshakeDefaultID(t, sc)
+	readHandshakeComponent(t, sc.decoder)
+
+	// Send a message, instead of a "<handshake/>" tag, to fail the handshake process dans disconnect the client.
+	me := stanza.Message{
+		Attrs: stanza.Attrs{Type: stanza.MessageTypeChat, From: defaultServerName, To: defaultComponentName, Lang: "en"},
+		Body:  "Fail my handshake.",
+	}
+	s, _ := xml.Marshal(me)
+	_, err := sc.connection.Write(s)
+	if err != nil {
+		t.Fatalf("could not write message: %v", err)
+	}
+
+	return
+}
+
+// Reads from the connection with the Component. Expects a handshake request, and returns the <handshake/> tag.
+func readHandshakeComponent(t *testing.T, decoder *xml.Decoder) {
+	se, err := stanza.NextStart(decoder)
+	if err != nil {
+		t.Errorf("cannot read auth: %s", err)
+		return
+	}
+	nv := &stanza.Handshake{}
+	// Decode element into pointer storage
+	if err = decoder.DecodeElement(nv, &se); err != nil {
+		t.Errorf("cannot decode handshake: %s", err)
+		return
+	}
+	if len(strings.TrimSpace(nv.Value)) == 0 {
+		t.Errorf("did not receive handshake ID")
+	}
+}
+
+// Performs a Component connection with a handshake. It uses a default ID defined in this file as a constant.
+// Used in the mock server as a Handler
+func handlerForComponentHandshakeDefaultID(t *testing.T, sc *ServerConn) {
+	checkOpenStreamHandshakeDefaultID(t, sc)
+	readHandshakeComponent(t, sc.decoder)
+	sc.connection.Write([]byte("<handshake/>")) // That's all the server needs to return (see xep-0114)
+	return
+}

config.go

@@ -1,24 +1,35 @@
 package xmpp
 
 import (
-	"crypto/tls"
-	"io"
+	"gosrc.io/xmpp/stanza"
 	"os"
+	"time"
 )
 
+// Config & TransportConfiguration must not be modified after having been passed to NewClient. Any
+// changes made after connecting are ignored.
 type Config struct {
-	Address        string
-	Jid            string
-	parsedJid      *Jid // For easier manipulation
-	Password       string
-	StreamLogger   *os.File // Used for debugging
-	Lang           string   // TODO: should default to 'en'
-	ConnectTimeout int      // Client timeout in seconds. Default to 15
-	// tls.Config must not be modified after having been passed to NewClient. The
-	// Client connect method may override the tls.Config.ServerName if it was not set.
-	TLSConfig *tls.Config
+	TransportConfiguration
+
+	Jid               string
+	parsedJid         *stanza.Jid // For easier manipulation
+	Credential        Credential
+	StreamLogger      *os.File      // Used for debugging
+	Lang              string        // TODO: should default to 'en'
+	KeepaliveInterval time.Duration // Interval between keepalive packets
+	ConnectTimeout    int           // Client timeout in seconds. Default to 15
 	// Insecure can be set to true to allow to open a session without TLS. If TLS
 	// is supported on the server, we will still try to use it.
-	Insecure      bool
-	CharsetReader func(charset string, input io.Reader) (io.Reader, error) // passed to xml decoder
+	Insecure bool
+
+	// Activate stream management process during session
+	StreamManagementEnable bool
+	// Enable stream management resume capability
+	streamManagementResume bool
+}
+
+// IsStreamResumable tells if a stream session is resumable by reading the "config" part of a client.
+// It checks if stream management is enabled, and if stream resumption was set and accepted by the server.
+func IsStreamResumable(c *Client) bool {
+	return c.config.StreamManagementEnable && c.config.streamManagementResume
 }

doc.go

@@ -29,7 +29,7 @@ Components
 
 XMPP components can typically be used to extends the features of an XMPP
 server, in a portable way, using component protocol over persistent TCP
-connections.
+serverConnections.
 
 Component protocol is defined in XEP-114 (https://xmpp.org/extensions/xep-0114.html).
 

go.mod

@@ -1,8 +1,10 @@
 module gosrc.io/xmpp
 
-go 1.12
+go 1.13
 
 require (
-	github.com/google/go-cmp v0.3.0
+	github.com/google/go-cmp v0.3.1
+	github.com/google/uuid v1.1.1
 	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
+	nhooyr.io/websocket v1.6.5
 )

go.sum

@@ -1,6 +1,210 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
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network.go

@@ -23,7 +23,7 @@ func ensurePort(addr string, port int) string {
 		// This is IPV4 without port
 		return addr + ":" + strconv.Itoa(port)
 	case 1:
-		// This is IPV$ with port
+		// This is IPV6 with port
 		return addr
 	default:
 		// This is IPV6 without port, as you need to use bracket with port in IPV6

network_test.go

@@ -1,12 +1,10 @@
 package xmpp
 
 import (
+	"strings"
 	"testing"
 )
 
-type params struct {
-}
-
 func TestParseAddr(t *testing.T) {
 	tests := []struct {
 		name  string
@@ -33,3 +31,36 @@ func TestParseAddr(t *testing.T) {
 		})
 	}
 }
+
+func TestEnsurePort(t *testing.T) {
+	testAddresses := []string{
+		"1ca3:6c07:ee3a:89ca:e065:9a70:71d:daad",
+		"1ca3:6c07:ee3a:89ca:e065:9a70:71d:daad:5252",
+		"[::1]",
+		"127.0.0.1:5555",
+		"127.0.0.1",
+		"[::1]:5555",
+	}
+
+	for _, oldAddr := range testAddresses {
+		t.Run(oldAddr, func(st *testing.T) {
+			newAddr := ensurePort(oldAddr, 5222)
+
+			if len(newAddr) < len(oldAddr) {
+				st.Errorf("incorrect Result: transformed address is shorter than input : %v (old) > %v (new)", newAddr, oldAddr)
+			}
+			// If IPv6, the new address needs brackets to specify a port, like so : [2001:db8:85a3:0:0:8a2e:370:7334]:5222
+			if strings.Count(newAddr, "[") < strings.Count(oldAddr, "[") ||
+				strings.Count(newAddr, "]") < strings.Count(oldAddr, "]") {
+
+				st.Errorf("incorrect Result. Transformed address seems to not have correct brakets : %v => %v", oldAddr, newAddr)
+			}
+
+			// Check if we messed up the colons, or didn't properly add a port
+			if strings.Count(newAddr, ":") < strings.Count(oldAddr, ":") {
+				st.Errorf("incorrect Result: transformed address doesn't seem to have a port %v (=> %v, no port ?)", oldAddr, newAddr)
+			}
+		})
+	}
+
+}

router.go

@@ -1,8 +1,10 @@
 package xmpp
 
 import (
+	"context"
 	"encoding/xml"
 	"strings"
+	"sync"
 
 	"gosrc.io/xmpp/stanza"
 )
@@ -25,16 +27,46 @@ TODO: Automatically reply to IQ that do not match any route, to comply to XMPP s
 type Router struct {
 	// Routes to be matched, in order.
 	routes []*Route
+
+	IQResultRoutes    map[string]*IQResultRoute
+	IQResultRouteLock sync.RWMutex
 }
 
 // NewRouter returns a new router instance.
 func NewRouter() *Router {
-	return &Router{}
+	return &Router{
+		IQResultRoutes: make(map[string]*IQResultRoute),
+	}
 }
 
 // route is called by the XMPP client to dispatch stanza received using the set up routes.
 // It is also used by test, but is not supposed to be used directly by users of the library.
 func (r *Router) route(s Sender, p stanza.Packet) {
+	a, isA := p.(stanza.SMAnswer)
+	if isA {
+		switch tt := s.(type) {
+		case *Client:
+			lastAcked := a.H
+			SendMissingStz(int(lastAcked), s, tt.Session.SMState.UnAckQueue)
+		case *Component:
+		// TODO
+		default:
+		}
+	}
+	iq, isIq := p.(*stanza.IQ)
+	if isIq {
+		r.IQResultRouteLock.RLock()
+		route, ok := r.IQResultRoutes[iq.Id]
+		r.IQResultRouteLock.RUnlock()
+		if ok {
+			r.IQResultRouteLock.Lock()
+			delete(r.IQResultRoutes, iq.Id)
+			r.IQResultRouteLock.Unlock()
+			route.result <- *iq
+			close(route.result)
+			return
+		}
+	}
 
 	var match RouteMatch
 	if r.Match(p, &match) {
@@ -42,15 +74,41 @@ func (r *Router) route(s Sender, p stanza.Packet) {
 		match.Handler.HandlePacket(s, p)
 		return
 	}
+
 	// If there is no match and we receive an iq set or get, we need to send a reply
-	if iq, ok := p.(stanza.IQ); ok {
-		if iq.Type == stanza.IQTypeGet || iq.Type == stanza.IQTypeSet {
-			iqNotImplemented(s, iq)
-		}
+	if isIq && (iq.Type == stanza.IQTypeGet || iq.Type == stanza.IQTypeSet) {
+		iqNotImplemented(s, iq)
 	}
 }
 
-func iqNotImplemented(s Sender, iq stanza.IQ) {
+// SendMissingStz sends all stanzas that did not reach the server, according to the response to an ack request (see XEP-0198, acks)
+func SendMissingStz(lastSent int, s Sender, uaq *stanza.UnAckQueue) error {
+	uaq.RWMutex.Lock()
+	if len(uaq.Uslice) <= 0 {
+		uaq.RWMutex.Unlock()
+		return nil
+	}
+	last := uaq.Uslice[len(uaq.Uslice)-1]
+	if last.Id > lastSent {
+		// Remove sent stanzas from the queue
+		uaq.PopN(lastSent - last.Id)
+		// Re-send non acknowledged stanzas
+		for _, elt := range uaq.PopN(len(uaq.Uslice)) {
+			eltStz := elt.(*stanza.UnAckedStz)
+			err := s.SendRaw(eltStz.Stz)
+			if err != nil {
+				return err
+			}
+
+		}
+		// Ask for updates on stanzas we just sent to the entity. Not sure I should leave this. Maybe let users call ack again by themselves ?
+		s.Send(stanza.SMRequest{})
+	}
+	uaq.RWMutex.Unlock()
+	return nil
+}
+
+func iqNotImplemented(s Sender, iq *stanza.IQ) {
 	err := stanza.Err{
 		XMLName: xml.Name{Local: "error"},
 		Code:    501,
@@ -68,6 +126,27 @@ func (r *Router) NewRoute() *Route {
 	return route
 }
 
+// NewIQResultRoute register a route that will catch an IQ result stanza with
+// the given Id. The route will only match ones, after which it will automatically
+// be unregistered
+func (r *Router) NewIQResultRoute(ctx context.Context, id string) chan stanza.IQ {
+	route := NewIQResultRoute(ctx)
+	r.IQResultRouteLock.Lock()
+	r.IQResultRoutes[id] = route
+	r.IQResultRouteLock.Unlock()
+
+	// Start a go function to make sure the route is unregistered when the context
+	// is done.
+	go func() {
+		<-route.context.Done()
+		r.IQResultRouteLock.Lock()
+		delete(r.IQResultRoutes, id)
+		r.IQResultRouteLock.Unlock()
+	}()
+
+	return route.result
+}
+
 func (r *Router) Match(p stanza.Packet, match *RouteMatch) bool {
 	for _, route := range r.routes {
 		if route.Match(p, match) {
@@ -89,8 +168,44 @@ func (r *Router) HandleFunc(name string, f func(s Sender, p stanza.Packet)) *Rou
 	return r.NewRoute().Packet(name).HandlerFunc(f)
 }
 
+// ============================================================================
+
+// TimeoutHandlerFunc is a function type for handling IQ result timeouts.
+type TimeoutHandlerFunc func(err error)
+
+// IQResultRoute is a temporary route to match IQ result stanzas
+type IQResultRoute struct {
+	context context.Context
+	result  chan stanza.IQ
+}
+
+// NewIQResultRoute creates a new IQResultRoute instance
+func NewIQResultRoute(ctx context.Context) *IQResultRoute {
+	return &IQResultRoute{
+		context: ctx,
+		result:  make(chan stanza.IQ),
+	}
+}
+
+// ============================================================================
+// IQ result handler
+
+// IQResultHandler is a utility interface for IQ result handlers
+type IQResultHandler interface {
+	HandleIQ(ctx context.Context, s Sender, iq stanza.IQ)
+}
+
+// IQResultHandlerFunc is an adapter to allow using functions as IQ result handlers.
+type IQResultHandlerFunc func(ctx context.Context, s Sender, iq stanza.IQ)
+
+// HandleIQ is a proxy function to implement IQResultHandler using a function.
+func (f IQResultHandlerFunc) HandleIQ(ctx context.Context, s Sender, iq stanza.IQ) {
+	f(ctx, s, iq)
+}
+
 // ============================================================================
 // Route
+
 type Handler interface {
 	HandlePacket(s Sender, p stanza.Packet)
 }
@@ -155,7 +270,7 @@ func (n nameMatcher) Match(p stanza.Packet, match *RouteMatch) bool {
 	switch p.(type) {
 	case stanza.Message:
 		name = "message"
-	case stanza.IQ:
+	case *stanza.IQ:
 		name = "iq"
 	case stanza.Presence:
 		name = "presence"
@@ -182,7 +297,7 @@ type nsTypeMatcher []string
 func (m nsTypeMatcher) Match(p stanza.Packet, match *RouteMatch) bool {
 	var stanzaType stanza.StanzaType
 	switch packet := p.(type) {
-	case stanza.IQ:
+	case *stanza.IQ:
 		stanzaType = packet.Type
 	case stanza.Presence:
 		stanzaType = packet.Type
@@ -214,7 +329,7 @@ func (r *Route) StanzaType(types ...string) *Route {
 type nsIQMatcher []string
 
 func (m nsIQMatcher) Match(p stanza.Packet, match *RouteMatch) bool {
-	iq, ok := p.(stanza.IQ)
+	iq, ok := p.(*stanza.IQ)
 	if !ok {
 		return false
 	}

router_test.go

@@ -2,8 +2,10 @@ package xmpp
 
 import (
 	"bytes"
+	"context"
 	"encoding/xml"
 	"testing"
+	"time"
 
 	"gosrc.io/xmpp/stanza"
 )
@@ -11,6 +13,50 @@ import (
 // ============================================================================
 // Test route & matchers
 
+func TestIQResultRoutes(t *testing.T) {
+	t.Parallel()
+	router := NewRouter()
+	conn := NewSenderMock()
+
+	if router.IQResultRoutes == nil {
+		t.Fatal("NewRouter does not initialize isResultRoutes")
+	}
+
+	// Check if the IQ handler was called
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*100)
+	defer cancel()
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeResult, Id: "1234"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	res := router.NewIQResultRoute(ctx, "1234")
+	go router.route(conn, iq)
+	select {
+	case <-ctx.Done():
+		t.Fatal("IQ result was not matched")
+	case <-res:
+		// Success
+	}
+
+	// The match must only happen once, so the id should no longer be in IQResultRoutes
+	if _, ok := router.IQResultRoutes[iq.Attrs.Id]; ok {
+		t.Fatal("IQ ID was not removed from the route map")
+	}
+
+	// Check other IQ does not matcah
+	ctx, cancel = context.WithTimeout(context.Background(), time.Millisecond*100)
+	defer cancel()
+	iq.Attrs.Id = "4321"
+	res = router.NewIQResultRoute(ctx, "1234")
+	go router.route(conn, iq)
+	select {
+	case <-ctx.Done():
+		// Success
+	case <-res:
+		t.Fatal("IQ result with wrong ID was matched")
+	}
+}
+
 func TestNameMatcher(t *testing.T) {
 	router := NewRouter()
 	router.HandleFunc("message", func(s Sender, p stanza.Packet) {
@@ -28,7 +74,10 @@ func TestNameMatcher(t *testing.T) {
 
 	// Check that an IQ packet is not matched
 	conn = NewSenderMock()
-	iq := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	iq.Payload = &stanza.DiscoInfo{}
 	router.route(conn, iq)
 	if conn.String() == successFlag {
@@ -46,7 +95,10 @@ func TestIQNSMatcher(t *testing.T) {
 
 	// Check that an IQ with proper namespace does match
 	conn := NewSenderMock()
-	iqDisco := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	iqDisco, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create iqDisco: %v", err)
+	}
 	// TODO: Add a function to generate payload with proper namespace initialisation
 	iqDisco.Payload = &stanza.DiscoInfo{
 		XMLName: xml.Name{
@@ -60,7 +112,10 @@ func TestIQNSMatcher(t *testing.T) {
 
 	// Check that another namespace is not matched
 	conn = NewSenderMock()
-	iqVersion := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	iqVersion, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, To: "localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create iqVersion: %v", err)
+	}
 	// TODO: Add a function to generate payload with proper namespace initialisation
 	iqVersion.Payload = &stanza.DiscoInfo{
 		XMLName: xml.Name{
@@ -103,7 +158,10 @@ func TestTypeMatcher(t *testing.T) {
 
 	// We do not match on other types
 	conn = NewSenderMock()
-	iqVersion := stanza.NewIQ(stanza.Attrs{Type: "get", From: "service.localhost", To: "test@localhost", Id: "1"})
+	iqVersion, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "service.localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create iqVersion: %v", err)
+	}
 	iqVersion.Payload = &stanza.DiscoInfo{
 		XMLName: xml.Name{
 			Space: "jabber:iq:version",
@@ -120,28 +178,37 @@ func TestCompositeMatcher(t *testing.T) {
 	router := NewRouter()
 	router.NewRoute().
 		IQNamespaces("jabber:iq:version").
-		StanzaType("get").
+		StanzaType(string(stanza.IQTypeGet)).
 		HandlerFunc(func(s Sender, p stanza.Packet) {
 			_ = s.SendRaw(successFlag)
 		})
 
 	// Data set
-	getVersionIq := stanza.NewIQ(stanza.Attrs{Type: "get", From: "service.localhost", To: "test@localhost", Id: "1"})
+	getVersionIq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "service.localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create getVersionIq: %v", err)
+	}
 	getVersionIq.Payload = &stanza.Version{
 		XMLName: xml.Name{
 			Space: "jabber:iq:version",
 			Local: "query",
 		}}
 
-	setVersionIq := stanza.NewIQ(stanza.Attrs{Type: "set", From: "service.localhost", To: "test@localhost", Id: "1"})
+	setVersionIq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeSet, From: "service.localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create setVersionIq: %v", err)
+	}
 	setVersionIq.Payload = &stanza.Version{
 		XMLName: xml.Name{
 			Space: "jabber:iq:version",
 			Local: "query",
 		}}
 
-	GetDiscoIq := stanza.NewIQ(stanza.Attrs{Type: "get", From: "service.localhost", To: "test@localhost", Id: "1"})
-	GetDiscoIq.Payload = &stanza.DiscoInfo{
+	getDiscoIq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "service.localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create getDiscoIq: %v", err)
+	}
+	getDiscoIq.Payload = &stanza.DiscoInfo{
 		XMLName: xml.Name{
 			Space: "http://jabber.org/protocol/disco#info",
 			Local: "query",
@@ -157,7 +224,7 @@ func TestCompositeMatcher(t *testing.T) {
 	}{
 		{name: "match get version iq", input: getVersionIq, want: true},
 		{name: "ignore set version iq", input: setVersionIq, want: false},
-		{name: "ignore get discoinfo iq", input: GetDiscoIq, want: false},
+		{name: "ignore get discoinfo iq", input: getDiscoIq, want: false},
 		{name: "ignore message", input: message, want: false},
 	}
 
@@ -195,7 +262,10 @@ func TestCatchallMatcher(t *testing.T) {
 	}
 
 	conn = NewSenderMock()
-	iqVersion := stanza.NewIQ(stanza.Attrs{Type: "get", From: "service.localhost", To: "test@localhost", Id: "1"})
+	iqVersion, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "service.localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create iqVersion: %v", err)
+	}
 	iqVersion.Payload = &stanza.DiscoInfo{
 		XMLName: xml.Name{
 			Space: "jabber:iq:version",
@@ -211,7 +281,8 @@ func TestCatchallMatcher(t *testing.T) {
 // ============================================================================
 // SenderMock
 
-var successFlag = "matched"
+const successFlag = "matched"
+const cancelledFlag = "cancelled"
 
 type SenderMock struct {
 	buffer *bytes.Buffer
@@ -230,6 +301,15 @@ func (s SenderMock) Send(packet stanza.Packet) error {
 	return nil
 }
 
+func (s SenderMock) SendIQ(ctx context.Context, iq *stanza.IQ) (chan stanza.IQ, error) {
+	out, err := xml.Marshal(iq)
+	if err != nil {
+		return nil, err
+	}
+	s.buffer.Write(out)
+	return nil, nil
+}
+
 func (s SenderMock) SendRaw(str string) error {
 	s.buffer.WriteString(str)
 	return nil

session.go

@@ -1,18 +1,13 @@
 package xmpp
 
 import (
-	"crypto/tls"
 	"encoding/xml"
 	"errors"
 	"fmt"
-	"io"
-	"net"
-
 	"gosrc.io/xmpp/stanza"
+	"strconv"
 )
 
-const xmppStreamOpen = "<?xml version='1.0'?><stream:stream to='%s' xmlns='%s' xmlns:stream='%s' version='1.0'>"
-
 type Session struct {
 	// Session info
 	BindJid      string // Jabber ID as provided by XMPP server
@@ -23,52 +18,75 @@ type Session struct {
 	lastPacketId int
 
 	// read / write
-	streamLogger io.ReadWriter
-	decoder      *xml.Decoder
+	transport Transport
 
 	// error management
 	err error
 }
 
-func NewSession(conn net.Conn, o Config, state SMState) (net.Conn, *Session, error) {
-	s := new(Session)
-	s.SMState = state
-	s.init(conn, o)
-
-	// starttls
-	var tlsConn net.Conn
-	tlsConn = s.startTlsIfSupported(conn, o.parsedJid.Domain, o)
-
-	if s.err != nil {
-		return nil, nil, NewConnError(s.err, true)
+func NewSession(c *Client, state SMState) (*Session, error) {
+	var s *Session
+	if c.Session == nil {
+		s = new(Session)
+		s.transport = c.transport
+		s.SMState = state
+		s.init()
+	} else {
+		s = c.Session
+		// We keep information about the previously set session, like the session ID, but we read server provided
+		// info again in case it changed between session break and resume, such as features.
+		s.init()
 	}
 
-	if !s.TlsEnabled && !o.Insecure {
+	if s.err != nil {
+		return nil, NewConnError(s.err, true)
+	}
+
+	if !c.transport.IsSecure() {
+		s.startTlsIfSupported(c.config)
+	}
+
+	if !c.transport.IsSecure() && !c.config.Insecure {
 		err := fmt.Errorf("failed to negotiate TLS session : %s", s.err)
-		return nil, nil, NewConnError(err, true)
+		return nil, NewConnError(err, true)
 	}
 
 	if s.TlsEnabled {
-		s.reset(conn, tlsConn, o)
+		s.reset()
 	}
 
 	// auth
-	s.auth(o)
-	s.reset(tlsConn, tlsConn, o)
+	s.auth(c.config)
+	if s.err != nil {
+		return s, s.err
+	}
+	s.reset()
+	if s.err != nil {
+		return s, s.err
+	}
 
 	// attempt resumption
-	if s.resume(o) {
-		return tlsConn, s, s.err
+	if s.resume(c.config) {
+		return s, s.err
 	}
 
 	// otherwise, bind resource and 'start' XMPP session
-	s.bind(o)
-	s.rfc3921Session(o)
+	s.bind(c.config)
+	if s.err != nil {
+		return s, s.err
+	}
+	s.rfc3921Session()
+	if s.err != nil {
+		return s, s.err
+	}
 
 	// Enable stream management if supported
-	s.EnableStreamManagement(o)
+	s.EnableStreamManagement(c.config)
+	if s.err != nil {
+		return s, s.err
+	}
 
-	return tlsConn, s, s.err
+	return s, s.err
 }
 
 func (s *Session) PacketId() string {
@@ -76,103 +94,72 @@ func (s *Session) PacketId() string {
 	return fmt.Sprintf("%x", s.lastPacketId)
 }
 
-func (s *Session) init(conn net.Conn, o Config) {
-	s.setStreamLogger(nil, conn, o)
-	s.Features = s.open(o.parsedJid.Domain)
+// init gathers information on the session such as stream features from the server.
+func (s *Session) init() {
+	s.Features = s.extractStreamFeatures()
 }
 
-func (s *Session) reset(conn net.Conn, newConn net.Conn, o Config) {
-	if s.err != nil {
+func (s *Session) reset() {
+	if s.StreamId, s.err = s.transport.StartStream(); s.err != nil {
 		return
 	}
 
-	s.setStreamLogger(conn, newConn, o)
-	s.Features = s.open(o.parsedJid.Domain)
+	s.Features = s.extractStreamFeatures()
 }
 
-func (s *Session) setStreamLogger(conn net.Conn, newConn net.Conn, o Config) {
-	if newConn != conn {
-		s.streamLogger = newStreamLogger(newConn, o.StreamLogger)
-	}
-	s.decoder = xml.NewDecoder(s.streamLogger)
-	s.decoder.CharsetReader = o.CharsetReader
-}
-
-func (s *Session) open(domain string) (f stanza.StreamFeatures) {
-	// Send stream open tag
-	if _, s.err = fmt.Fprintf(s.streamLogger, xmppStreamOpen, domain, stanza.NSClient, stanza.NSStream); s.err != nil {
-		return
-	}
-
-	// Set xml decoder and extract streamID from reply
-	s.StreamId, s.err = stanza.InitStream(s.decoder) // TODO refactor / rename
-	if s.err != nil {
-		return
-	}
-
+func (s *Session) extractStreamFeatures() (f stanza.StreamFeatures) {
 	// extract stream features
-	if s.err = s.decoder.Decode(&f); s.err != nil {
+	if s.err = s.transport.GetDecoder().Decode(&f); s.err != nil {
 		s.err = errors.New("stream open decode features: " + s.err.Error())
 	}
 	return
 }
 
-func (s *Session) startTlsIfSupported(conn net.Conn, domain string, o Config) net.Conn {
-	if s.err != nil {
-		return conn
-	}
-
-	if _, ok := s.Features.DoesStartTLS(); ok {
-		fmt.Fprintf(s.streamLogger, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>")
-
-		var k stanza.TLSProceed
-		if s.err = s.decoder.DecodeElement(&k, nil); s.err != nil {
-			s.err = errors.New("expecting starttls proceed: " + s.err.Error())
-			return conn
-		}
-
-		if o.TLSConfig == nil {
-			o.TLSConfig = &tls.Config{}
-		}
-
-		if o.TLSConfig.ServerName == "" {
-			o.TLSConfig.ServerName = domain
-		}
-		tlsConn := tls.Client(conn, o.TLSConfig)
-		// We convert existing connection to TLS
-		if s.err = tlsConn.Handshake(); s.err != nil {
-			return tlsConn
-		}
-
-		if !o.TLSConfig.InsecureSkipVerify {
-			s.err = tlsConn.VerifyHostname(domain)
-		}
-
-		if s.err == nil {
-			s.TlsEnabled = true
-		}
-		return tlsConn
-	}
-
-	// If we do not allow cleartext connections, make it explicit that server do not support starttls
-	if !o.Insecure {
-		s.err = errors.New("XMPP server does not advertise support for starttls")
-	}
-
-	// starttls is not supported => we do not upgrade the connection:
-	return conn
-}
-
-func (s *Session) auth(o Config) {
+func (s *Session) startTlsIfSupported(o *Config) {
 	if s.err != nil {
 		return
 	}
 
-	s.err = authSASL(s.streamLogger, s.decoder, s.Features, o.parsedJid.Node, o.Password)
+	if !s.transport.DoesStartTLS() {
+		if !o.Insecure {
+			s.err = errors.New("transport does not support starttls")
+		}
+		return
+	}
+
+	if _, ok := s.Features.DoesStartTLS(); ok {
+		fmt.Fprintf(s.transport, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>")
+
+		var k stanza.TLSProceed
+		if s.err = s.transport.GetDecoder().DecodeElement(&k, nil); s.err != nil {
+			s.err = errors.New("expecting starttls proceed: " + s.err.Error())
+			return
+		}
+
+		s.err = s.transport.StartTLS()
+
+		if s.err == nil {
+			s.TlsEnabled = true
+		}
+		return
+	}
+
+	// If we do not allow cleartext serverConnections, make it explicit that server do not support starttls
+	if !o.Insecure {
+		s.err = errors.New("XMPP server does not advertise support for starttls")
+	}
+}
+
+func (s *Session) auth(o *Config) {
+	if s.err != nil {
+		return
+	}
+
+	s.err = authSASL(s.transport, s.transport.GetDecoder(), s.Features, o.parsedJid.Node, o.Credential)
 }
 
 // Attempt to resume session using stream management
-func (s *Session) resume(o Config) bool {
+func (s *Session) resume(o *Config) bool {
 	if !s.Features.DoesStreamManagement() {
 		return false
 	}
@@ -180,11 +167,18 @@ func (s *Session) resume(o Config) bool {
 		return false
 	}
 
-	fmt.Fprintf(s.streamLogger, "<resume xmlns='%s' h='%d' previd='%s'/>",
-		stanza.NSStreamManagement, s.SMState.Inbound, s.SMState.Id)
+	rsm := stanza.SMResume{
+		PrevId: s.SMState.Id,
+		H:      &s.SMState.Inbound,
+	}
+	data, err := xml.Marshal(rsm)
 
+	_, err = s.transport.Write(data)
+	if err != nil {
+		return false
+	}
 	var packet stanza.Packet
-	packet, s.err = stanza.NextPacket(s.decoder)
+	packet, s.err = stanza.NextPacket(s.transport.GetDecoder())
 	if s.err == nil {
 		switch p := packet.(type) {
 		case stanza.SMResumed:
@@ -203,22 +197,50 @@ func (s *Session) resume(o Config) bool {
 	return false
 }
 
-func (s *Session) bind(o Config) {
+func (s *Session) bind(o *Config) {
 	if s.err != nil {
 		return
 	}
 
 	// Send IQ message asking to bind to the local user name.
 	var resource = o.parsedJid.Resource
-	if resource != "" {
-		fmt.Fprintf(s.streamLogger, "<iq type='set' id='%s'><bind xmlns='%s'><resource>%s</resource></bind></iq>",
-			s.PacketId(), stanza.NSBind, resource)
-	} else {
-		fmt.Fprintf(s.streamLogger, "<iq type='set' id='%s'><bind xmlns='%s'/></iq>", s.PacketId(), stanza.NSBind)
+	iqB, err := stanza.NewIQ(stanza.Attrs{
+		Type: stanza.IQTypeSet,
+		Id:   s.PacketId(),
+	})
+	if err != nil {
+		s.err = err
+		return
 	}
 
+	// Check if we already have a resource name, and include it in the request if so
+	if resource != "" {
+		iqB.Payload = &stanza.Bind{
+			Resource: resource,
+		}
+	} else {
+		iqB.Payload = &stanza.Bind{}
+
+	}
+
+	// Send the bind request IQ
+	data, err := xml.Marshal(iqB)
+	if err != nil {
+		s.err = err
+		return
+	}
+	n, err := s.transport.Write(data)
+	if err != nil {
+		s.err = err
+		return
+	} else if n == 0 {
+		s.err = errors.New("failed to write bind iq stanza to the server : wrote 0 bytes")
+		return
+	}
+
+	// Check the server response
 	var iq stanza.IQ
-	if s.err = s.decoder.Decode(&iq); s.err != nil {
+	if s.err = s.transport.GetDecoder().Decode(&iq); s.err != nil {
 		s.err = errors.New("error decoding iq bind result: " + s.err.Error())
 		return
 	}
@@ -235,7 +257,7 @@ func (s *Session) bind(o Config) {
 }
 
 // After the bind, if the session is not optional (as per old RFC 3921), we send the session open iq.
-func (s *Session) rfc3921Session(o Config) {
+func (s *Session) rfc3921Session() {
 	if s.err != nil {
 		return
 	}
@@ -243,8 +265,30 @@ func (s *Session) rfc3921Session(o Config) {
 	var iq stanza.IQ
 	// We only negotiate session binding if it is mandatory, we skip it when optional.
 	if !s.Features.Session.IsOptional() {
-		fmt.Fprintf(s.streamLogger, "<iq type='set' id='%s'><session xmlns='%s'/></iq>", s.PacketId(), stanza.NSSession)
-		if s.err = s.decoder.Decode(&iq); s.err != nil {
+		se, err := stanza.NewIQ(stanza.Attrs{
+			Type: stanza.IQTypeSet,
+			Id:   s.PacketId(),
+		})
+		if err != nil {
+			s.err = err
+			return
+		}
+		se.Payload = &stanza.StreamSession{}
+		data, err := xml.Marshal(se)
+		if err != nil {
+			s.err = err
+			return
+		}
+		n, err := s.transport.Write(data)
+		if err != nil {
+			s.err = err
+			return
+		} else if n == 0 {
+			s.err = errors.New("there was a problem marshaling the session IQ : wrote 0 bytes to server")
+			return
+		}
+
+		if s.err = s.transport.GetDecoder().Decode(&iq); s.err != nil {
 			s.err = errors.New("expecting iq result after session open: " + s.err.Error())
 			return
 		}
@@ -252,28 +296,47 @@ func (s *Session) rfc3921Session(o Config) {
 }
 
 // Enable stream management, with session resumption, if supported.
-func (s *Session) EnableStreamManagement(o Config) {
+func (s *Session) EnableStreamManagement(o *Config) {
 	if s.err != nil {
 		return
 	}
-	if !s.Features.DoesStreamManagement() {
+	if !s.Features.DoesStreamManagement() || !o.StreamManagementEnable {
+		return
+	}
+	q := stanza.NewUnAckQueue()
+	ebleNonza := stanza.SMEnable{Resume: &o.streamManagementResume}
+	pktStr, err := xml.Marshal(ebleNonza)
+	if err != nil {
+		s.err = err
+		return
+	}
+	_, err = s.transport.Write(pktStr)
+	if err != nil {
+		s.err = err
 		return
 	}
 
-	fmt.Fprintf(s.streamLogger, "<enable xmlns='%s' resume='true'/>", stanza.NSStreamManagement)
-
 	var packet stanza.Packet
-	packet, s.err = stanza.NextPacket(s.decoder)
+	packet, s.err = stanza.NextPacket(s.transport.GetDecoder())
 	if s.err == nil {
 		switch p := packet.(type) {
 		case stanza.SMEnabled:
-			s.SMState = SMState{Id: p.Id}
+			// Server allows resumption or not using SMEnabled attribute "resume". We must read the server response
+			// and update config accordingly
+			b, err := strconv.ParseBool(p.Resume)
+			if err != nil || !b {
+				o.StreamManagementEnable = false
+			}
+			s.SMState = SMState{Id: p.Id, preferredReconAddr: p.Location}
+			s.SMState.UnAckQueue = q
 		case stanza.SMFailed:
 			// TODO: Store error in SMState, for later inspection
+			s.SMState = SMState{StreamErrorGroup: p.StreamErrorGroup}
+			s.SMState.UnAckQueue = q
+			s.err = errors.New("failed to establish session : " + s.SMState.StreamErrorGroup.GroupErrorName())
 		default:
 			s.err = errors.New("unexpected reply to SM enable")
 		}
 	}
-
 	return
 }

stanza/commands.go

@@ -0,0 +1,157 @@
+package stanza
+
+import "encoding/xml"
+
+// Implements the XEP-0050 extension
+
+const (
+	CommandActionCancel   = "cancel"
+	CommandActionComplete = "complete"
+	CommandActionExecute  = "execute"
+	CommandActionNext     = "next"
+	CommandActionPrevious = "prev"
+
+	CommandStatusCancelled = "canceled"
+	CommandStatusCompleted = "completed"
+	CommandStatusExecuting = "executing"
+
+	CommandNoteTypeErr  = "error"
+	CommandNoteTypeInfo = "info"
+	CommandNoteTypeWarn = "warn"
+)
+
+type Command struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/commands command"`
+
+	CommandElements []CommandElement
+
+	BadAction       *struct{} `xml:"bad-action,omitempty"`
+	BadLocale       *struct{} `xml:"bad-locale,omitempty"`
+	BadPayload      *struct{} `xml:"bad-payload,omitempty"`
+	BadSessionId    *struct{} `xml:"bad-sessionid,omitempty"`
+	MalformedAction *struct{} `xml:"malformed-action,omitempty"`
+	SessionExpired  *struct{} `xml:"session-expired,omitempty"`
+
+	// Attributes
+	Action    string `xml:"action,attr,omitempty"`
+	Node      string `xml:"node,attr"`
+	SessionId string `xml:"sessionid,attr,omitempty"`
+	Status    string `xml:"status,attr,omitempty"`
+	Lang      string `xml:"lang,attr,omitempty"`
+
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
+}
+
+func (c *Command) Namespace() string {
+	return c.XMLName.Space
+}
+
+func (c *Command) GetSet() *ResultSet {
+	return c.ResultSet
+}
+
+type CommandElement interface {
+	Ref() string
+}
+
+type Actions struct {
+	XMLName xml.Name `xml:"actions"`
+
+	Prev     *struct{} `xml:"prev,omitempty"`
+	Next     *struct{} `xml:"next,omitempty"`
+	Complete *struct{} `xml:"complete,omitempty"`
+
+	Execute string `xml:"execute,attr,omitempty"`
+}
+
+func (a *Actions) Ref() string {
+	return "actions"
+}
+
+type Note struct {
+	XMLName xml.Name `xml:"note"`
+
+	Text string `xml:",cdata"`
+	Type string `xml:"type,attr,omitempty"`
+}
+
+func (n *Note) Ref() string {
+	return "note"
+}
+func (f *Form) Ref() string { return "form" }
+
+func (n *Node) Ref() string {
+	return "node"
+}
+
+func (c *Command) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	c.XMLName = start.Name
+
+	// Extract packet attributes
+	for _, attr := range start.Attr {
+		if attr.Name.Local == "action" {
+			c.Action = attr.Value
+		}
+		if attr.Name.Local == "node" {
+			c.Node = attr.Value
+		}
+		if attr.Name.Local == "sessionid" {
+			c.SessionId = attr.Value
+		}
+		if attr.Name.Local == "status" {
+			c.Status = attr.Value
+		}
+		if attr.Name.Local == "lang" {
+			c.Lang = attr.Value
+		}
+	}
+
+	// decode inner elements
+	for {
+		t, err := d.Token()
+		if err != nil {
+			return err
+		}
+
+		switch tt := t.(type) {
+
+		case xml.StartElement:
+			// Decode sub-elements
+			var err error
+			switch tt.Name.Local {
+
+			case "actions":
+				a := Actions{}
+				err = d.DecodeElement(&a, &tt)
+				c.CommandElements = append(c.CommandElements, &a)
+			case "note":
+				nt := Note{}
+				err = d.DecodeElement(&nt, &tt)
+				c.CommandElements = append(c.CommandElements, &nt)
+			case "x":
+				f := Form{}
+				err = d.DecodeElement(&f, &tt)
+				c.CommandElements = append(c.CommandElements, &f)
+			default:
+				n := Node{}
+				err = d.DecodeElement(&n, &tt)
+				c.CommandElements = append(c.CommandElements, &n)
+				if err != nil {
+					return err
+				}
+			}
+			if err != nil {
+				return err
+			}
+		case xml.EndElement:
+			if tt == start.End() {
+				return nil
+			}
+		}
+	}
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "http://jabber.org/protocol/commands", Local: "command"}, Command{})
+}

stanza/commands_test.go

@@ -0,0 +1,40 @@
+package stanza_test
+
+import (
+	"encoding/xml"
+	"gosrc.io/xmpp/stanza"
+	"testing"
+)
+
+func TestMarshalCommands(t *testing.T) {
+	input := "<command xmlns=\"http://jabber.org/protocol/commands\" node=\"list\" " +
+		"sessionid=\"list:20020923T213616Z-700\" status=\"completed\"><x xmlns=\"jabber:x:data\" " +
+		"type=\"result\"><title>Available Services</title><reported xmlns=\"jabber:x:data\"><field var=\"service\" " +
+		"label=\"Service\"></field><field var=\"runlevel-1\" label=\"Single-User mode\">" +
+		"</field><field var=\"runlevel-2\" label=\"Non-Networked Multi-User mode\"></field><field var=\"runlevel-3\" " +
+		"label=\"Full Multi-User mode\"></field><field var=\"runlevel-5\" label=\"X-Window mode\"></field></reported>" +
+		"<item xmlns=\"jabber:x:data\"><field var=\"service\"><value>httpd</value></field><field var=\"runlevel-1\">" +
+		"<value>off</value></field><field var=\"runlevel-2\"><value>off</value></field><field var=\"runlevel-3\">" +
+		"<value>on</value></field><field var=\"runlevel-5\"><value>on</value></field></item>" +
+		"<item xmlns=\"jabber:x:data\"><field var=\"service\"><value>postgresql</value></field>" +
+		"<field var=\"runlevel-1\"><value>off</value></field><field var=\"runlevel-2\"><value>off</value></field>" +
+		"<field var=\"runlevel-3\"><value>on</value></field><field var=\"runlevel-5\"><value>on</value></field></item>" +
+		"<item xmlns=\"jabber:x:data\"><field var=\"service\"><value>jabberd</value></field><field var=\"runlevel-1\">" +
+		"<value>off</value></field><field var=\"runlevel-2\"><value>off</value></field><field var=\"runlevel-3\">" +
+		"<value>on</value></field><field var=\"runlevel-5\"><value>on</value></field></item></x></command>"
+	var c stanza.Command
+	err := xml.Unmarshal([]byte(input), &c)
+
+	if err != nil {
+		t.Fatalf("failed to unmarshal initial input")
+	}
+
+	data, err := xml.Marshal(c)
+	if err != nil {
+		t.Fatalf("failed to marshal unmarshalled input")
+	}
+
+	if err := compareMarshal(input, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}

stanza/component.go

@@ -12,7 +12,7 @@ import (
 type Handshake struct {
 	XMLName xml.Name `xml:"jabber:component:accept handshake"`
 	// TODO Add handshake value with test for proper serialization
-	// Value string     `xml:",innerxml"`
+	Value string `xml:",innerxml"`
 }
 
 func (Handshake) Name() string {
@@ -42,11 +42,16 @@ type Delegation struct {
 	XMLName   xml.Name   `xml:"urn:xmpp:delegation:1 delegation"`
 	Forwarded *Forwarded // This is used in iq to wrap delegated iqs
 	Delegated *Delegated // This is used in a message to confirm delegated namespace
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (d *Delegation) Namespace() string {
 	return d.XMLName.Space
 }
+func (d *Delegation) GetSet() *ResultSet {
+	return d.ResultSet
+}
 
 // Forwarded is used to wrapped forwarded stanzas.
 // TODO: Move it in another file, as it is not limited to components.
@@ -86,6 +91,6 @@ type Delegated struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{"urn:xmpp:delegation:1", "delegation"}, Delegation{})
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"urn:xmpp:delegation:1", "delegation"}, Delegation{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "urn:xmpp:delegation:1", Local: "delegation"}, Delegation{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "urn:xmpp:delegation:1", Local: "delegation"}, Delegation{})
 }

stanza/component_test.go

@@ -61,13 +61,13 @@ func TestParsingDelegationIQ(t *testing.T) {
 	if iq.Payload != nil {
 		if delegation, ok := iq.Payload.(*Delegation); ok {
 			packet := delegation.Forwarded.Stanza
-			forwardedIQ, ok := packet.(IQ)
+			forwardedIQ, ok := packet.(*IQ)
 			if !ok {
 				t.Errorf("Could not extract packet IQ")
 				return
 			}
 			if forwardedIQ.Payload != nil {
-				if pubsub, ok := forwardedIQ.Payload.(*PubSub); ok {
+				if pubsub, ok := forwardedIQ.Payload.(*PubSubGeneric); ok {
 					node = pubsub.Publish.Node
 				}
 			}

stanza/datetime_profiles.go

@@ -0,0 +1,70 @@
+package stanza
+
+import (
+	"errors"
+	"strings"
+	"time"
+)
+
+// Helper structures and functions to manage dates and timestamps as defined in
+// XEP-0082: XMPP Date and Time Profiles (https://xmpp.org/extensions/xep-0082.html)
+
+const dateLayoutXEP0082 = "2006-01-02"
+const timeLayoutXEP0082 = "15:04:05+00:00"
+
+var InvalidDateInput = errors.New("could not parse date. Input might not be in a supported format")
+var InvalidDateOutput = errors.New("could not format date as desired")
+
+type JabberDate struct {
+	value time.Time
+}
+
+func (d JabberDate) DateToString() string {
+	return d.value.Format(dateLayoutXEP0082)
+}
+
+func (d JabberDate) DateTimeToString(nanos bool) string {
+	if nanos {
+		return d.value.Format(time.RFC3339Nano)
+	}
+	return d.value.Format(time.RFC3339)
+}
+
+func (d JabberDate) TimeToString(nanos bool) (string, error) {
+	if nanos {
+		spl := strings.Split(d.value.Format(time.RFC3339Nano), "T")
+		if len(spl) != 2 {
+			return "", InvalidDateOutput
+		}
+		return spl[1], nil
+	}
+	spl := strings.Split(d.value.Format(time.RFC3339), "T")
+	if len(spl) != 2 {
+		return "", InvalidDateOutput
+	}
+	return spl[1], nil
+}
+
+func NewJabberDateFromString(strDate string) (JabberDate, error) {
+	t, err := time.Parse(time.RFC3339, strDate)
+	if err == nil {
+		return JabberDate{value: t}, nil
+	}
+
+	t, err = time.Parse(time.RFC3339Nano, strDate)
+	if err == nil {
+		return JabberDate{value: t}, nil
+	}
+
+	t, err = time.Parse(dateLayoutXEP0082, strDate)
+	if err == nil {
+		return JabberDate{value: t}, nil
+	}
+
+	t, err = time.Parse(timeLayoutXEP0082, strDate)
+	if err == nil {
+		return JabberDate{value: t}, nil
+	}
+
+	return JabberDate{}, InvalidDateInput
+}

stanza/datetime_profiles_test.go

@@ -0,0 +1,191 @@
+package stanza
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDateToString(t *testing.T) {
+	t1 := JabberDate{value: time.Now()}
+	t2 := JabberDate{value: time.Now().Add(24 * time.Hour)}
+
+	t1Str := t1.DateToString()
+	t2Str := t2.DateToString()
+
+	if t1Str == t2Str {
+		t.Fatalf("time representations should not be identical")
+	}
+}
+
+func TestDateToStringOracle(t *testing.T) {
+	expected := "2009-11-10"
+	loc, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t1 := JabberDate{value: time.Date(2009, time.November, 10, 23, 3, 22, 89, loc)}
+
+	t1Str := t1.DateToString()
+	if t1Str != expected {
+		t.Fatalf("time is different than expected. Expected: %s, Actual: %s", expected, t1Str)
+	}
+}
+
+func TestDateTimeToString(t *testing.T) {
+	t1 := JabberDate{value: time.Now()}
+	t2 := JabberDate{value: time.Now().Add(10 * time.Second)}
+
+	t1Str := t1.DateTimeToString(false)
+	t2Str := t2.DateTimeToString(false)
+
+	if t1Str == t2Str {
+		t.Fatalf("time representations should not be identical")
+	}
+}
+
+func TestDateTimeToStringOracle(t *testing.T) {
+	expected := "2009-11-10T23:03:22+08:00"
+	loc, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t1 := JabberDate{value: time.Date(2009, time.November, 10, 23, 3, 22, 89, loc)}
+
+	t1Str := t1.DateTimeToString(false)
+	if t1Str != expected {
+		t.Fatalf("time is different than expected. Expected: %s, Actual: %s", expected, t1Str)
+	}
+}
+
+func TestDateTimeToStringNanos(t *testing.T) {
+	t1 := JabberDate{value: time.Now()}
+	time.After(10 * time.Millisecond)
+	t2 := JabberDate{value: time.Now()}
+
+	t1Str := t1.DateTimeToString(true)
+	t2Str := t2.DateTimeToString(true)
+
+	if t1Str == t2Str {
+		t.Fatalf("time representations should not be identical")
+	}
+}
+
+func TestDateTimeToStringNanosOracle(t *testing.T) {
+	expected := "2009-11-10T23:03:22.000000089+08:00"
+	loc, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t1 := JabberDate{value: time.Date(2009, time.November, 10, 23, 3, 22, 89, loc)}
+
+	t1Str := t1.DateTimeToString(true)
+	if t1Str != expected {
+		t.Fatalf("time is different than expected. Expected: %s, Actual: %s", expected, t1Str)
+	}
+}
+
+func TestTimeToString(t *testing.T) {
+	t1 := JabberDate{value: time.Now()}
+	t2 := JabberDate{value: time.Now().Add(10 * time.Second)}
+
+	t1Str, err := t1.TimeToString(false)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t2Str, err := t2.TimeToString(false)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if t1Str == t2Str {
+		t.Fatalf("time representations should not be identical")
+	}
+}
+
+func TestTimeToStringOracle(t *testing.T) {
+	expected := "23:03:22+08:00"
+	loc, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t1 := JabberDate{value: time.Date(2009, time.November, 10, 23, 3, 22, 89, loc)}
+
+	t1Str, err := t1.TimeToString(false)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if t1Str != expected {
+		t.Fatalf("time is different than expected. Expected: %s, Actual: %s", expected, t1Str)
+	}
+}
+
+func TestTimeToStringNanos(t *testing.T) {
+	t1 := JabberDate{value: time.Now()}
+	time.After(10 * time.Millisecond)
+	t2 := JabberDate{value: time.Now()}
+
+	t1Str, err := t1.TimeToString(true)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t2Str, err := t2.TimeToString(true)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if t1Str == t2Str {
+		t.Fatalf("time representations should not be identical")
+	}
+}
+func TestTimeToStringNanosOracle(t *testing.T) {
+	expected := "23:03:22.000000089+08:00"
+	loc, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	t1 := JabberDate{value: time.Date(2009, time.November, 10, 23, 3, 22, 89, loc)}
+
+	t1Str, err := t1.TimeToString(true)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if t1Str != expected {
+		t.Fatalf("time is different than expected. Expected: %s, Actual: %s", expected, t1Str)
+	}
+}
+
+func TestJabberDateParsing(t *testing.T) {
+	date := "2009-11-10"
+	_, err := NewJabberDateFromString(date)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	dateTime := "2009-11-10T23:03:22+08:00"
+	_, err = NewJabberDateFromString(dateTime)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	dateTimeNanos := "2009-11-10T23:03:22.000000089+08:00"
+	_, err = NewJabberDateFromString(dateTimeNanos)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	// TODO : fix these. Parsing a time with an offset doesn't work
+	//time := "23:03:22+08:00"
+	//_, err = NewJabberDateFromString(time)
+	//if err != nil {
+	//	t.Fatalf(err.Error())
+	//}
+
+	//timeNanos := "23:03:22.000000089+08:00"
+	//_, err = NewJabberDateFromString(timeNanos)
+	//if err != nil {
+	//	t.Fatalf(err.Error())
+	//}
+
+}

stanza/error.go

@@ -3,6 +3,7 @@ package stanza
 import (
 	"encoding/xml"
 	"strconv"
+	"strings"
 )
 
 // ============================================================================
@@ -53,10 +54,19 @@ func (x *Err) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 			}
 
 			textName := xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-stanzas", Local: "text"}
-			if elt.XMLName == textName {
-				x.Text = string(elt.Content)
-			} else if elt.XMLName.Space == "urn:ietf:params:xml:ns:xmpp-stanzas" {
-				x.Reason = elt.XMLName.Local
+			// TODO : change the pubsub handling ? It kind of dilutes the information
+			// Handles : 6.1.3.11 Node Has Moved for XEP-0060 (PubSubGeneric)
+			goneName := xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-stanzas", Local: "gone"}
+			if elt.XMLName == textName || // Regular error text
+				elt.XMLName == goneName { // Gone text for pubsub
+				x.Text = elt.Content
+			} else if elt.XMLName.Space == "urn:ietf:params:xml:ns:xmpp-stanzas" ||
+				elt.XMLName.Space == "http://jabber.org/protocol/pubsub#errors" {
+				if strings.TrimSpace(x.Reason) != "" {
+					x.Reason = strings.Join([]string{elt.XMLName.Local}, ":")
+				} else {
+					x.Reason = elt.XMLName.Local
+				}
 			}
 
 		case xml.EndElement:
@@ -94,16 +104,32 @@ func (x Err) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
 	// Reason
 	if x.Reason != "" {
 		reason := xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-stanzas", Local: x.Reason}
-		e.EncodeToken(xml.StartElement{Name: reason})
-		e.EncodeToken(xml.EndElement{Name: reason})
+		err = e.EncodeToken(xml.StartElement{Name: reason})
+		if err != nil {
+			return err
+		}
+		err = e.EncodeToken(xml.EndElement{Name: reason})
+		if err != nil {
+			return err
+		}
+
 	}
 
 	// Text
 	if x.Text != "" {
 		text := xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-stanzas", Local: "text"}
-		e.EncodeToken(xml.StartElement{Name: text})
-		e.EncodeToken(xml.CharData(x.Text))
-		e.EncodeToken(xml.EndElement{Name: text})
+		err = e.EncodeToken(xml.StartElement{Name: text})
+		if err != nil {
+			return err
+		}
+		err = e.EncodeToken(xml.CharData(x.Text))
+		if err != nil {
+			return err
+		}
+		err = e.EncodeToken(xml.EndElement{Name: text})
+		if err != nil {
+			return err
+		}
 	}
 
 	return e.EncodeToken(xml.EndElement{Name: start.Name})

stanza/fifo_queue.go

@@ -0,0 +1,34 @@
+package stanza
+
+// FIFO queue for string contents
+// Implementations have no guarantee regarding thread safety !
+type FifoQueue interface {
+	// Pop returns the first inserted element still in queue and deletes it from queue. If queue is empty, returns nil
+	// No guarantee regarding thread safety !
+	Pop() Queueable
+
+	// PopN returns the N first inserted elements still in queue and deletes them from queue. If queue is empty or i<=0, returns nil
+	// If number to pop is greater than queue length, returns all queue elements
+	// No guarantee regarding thread safety !
+	PopN(i int) []Queueable
+
+	// Peek returns a copy of the first inserted element in queue without deleting it. If queue is empty, returns nil
+	// No guarantee regarding thread safety !
+	Peek() Queueable
+
+	// Peek returns a copy of the first inserted element in queue without deleting it. If queue is empty or i<=0, returns nil.
+	// If number to peek is greater than queue length, returns all queue elements
+	// No guarantee regarding thread safety !
+	PeekN() []Queueable
+	// Push adds an element to the queue
+	// No guarantee regarding thread safety !
+	Push(s Queueable) error
+
+	// Empty returns true if queue is empty
+	// No guarantee regarding thread safety !
+	Empty() bool
+}
+
+type Queueable interface {
+	QueueableName() string
+}

stanza/form.go

@@ -0,0 +1,68 @@
+package stanza
+
+import "encoding/xml"
+
+type FormType string
+
+const (
+	FormTypeCancel = "cancel"
+	FormTypeForm   = "form"
+	FormTypeResult = "result"
+	FormTypeSubmit = "submit"
+)
+
+// See XEP-0004 and XEP-0068
+// Pointer semantics
+type Form struct {
+	XMLName      xml.Name   `xml:"jabber:x:data x"`
+	Instructions []string   `xml:"instructions"`
+	Title        string     `xml:"title,omitempty"`
+	Fields       []*Field   `xml:"field,omitempty"`
+	Reported     *FormItem  `xml:"reported"`
+	Items        []FormItem `xml:"item,omitempty"`
+	Type         string     `xml:"type,attr"`
+}
+
+type FormItem struct {
+	XMLName xml.Name
+	Fields  []Field `xml:"field,omitempty"`
+}
+
+type Field struct {
+	XMLName     xml.Name `xml:"field"`
+	Description string   `xml:"desc,omitempty"`
+	Required    *string  `xml:"required"`
+	ValuesList  []string `xml:"value"`
+	Options     []Option `xml:"option,omitempty"`
+	Var         string   `xml:"var,attr,omitempty"`
+	Type        string   `xml:"type,attr,omitempty"`
+	Label       string   `xml:"label,attr,omitempty"`
+}
+
+func NewForm(fields []*Field, formType string) *Form {
+	return &Form{
+		Type:   formType,
+		Fields: fields,
+	}
+}
+
+type FieldType string
+
+const (
+	FieldTypeBool        = "boolean"
+	FieldTypeFixed       = "fixed"
+	FieldTypeHidden      = "hidden"
+	FieldTypeJidMulti    = "jid-multi"
+	FieldTypeJidSingle   = "jid-single"
+	FieldTypeListMulti   = "list-multi"
+	FieldTypeListSingle  = "list-single"
+	FieldTypeTextMulti   = "text-multi"
+	FieldTypeTextPrivate = "text-private"
+	FieldTypeTextSingle  = "text-Single"
+)
+
+type Option struct {
+	XMLName    xml.Name `xml:"option"`
+	Label      string   `xml:"label,attr,omitempty"`
+	ValuesList []string `xml:"value"`
+}

stanza/form_test.go

@@ -0,0 +1,110 @@
+package stanza
+
+import (
+	"encoding/xml"
+	"strings"
+	"testing"
+)
+
+const (
+	formSubmit = "<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\">" +
+		"<configure node=\"princely_musings\">" +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\">" +
+		"<field var=\"FORM_TYPE\" type=\"hidden\">" +
+		"<value>http://jabber.org/protocol/pubsub#node_config</value>" +
+		"</field>" +
+		"<field var=\"pubsub#title\">" +
+		"<value>Princely Musings (Atom)</value>" +
+		"</field>" +
+		"<field var=\"pubsub#deliver_notifications\">" +
+		"<value>1</value>" +
+		"</field>" +
+		"<field var=\"pubsub#access_model\">" +
+		"<value>roster</value>" +
+		"</field>" +
+		"<field var=\"pubsub#roster_groups_allowed\">" +
+		"<value>friends</value>" +
+		"<value>servants</value>" +
+		"<value>courtiers</value>" +
+		"</field>" +
+		"<field var=\"pubsub#type\">" +
+		"<value>http://www.w3.org/2005/Atom</value>" +
+		"</field>" +
+		"<field var=\"pubsub#notification_type\" type=\"list-single\"" +
+		"label=\"Specify the delivery style for event notifications\">" +
+		"<value>headline</value>" +
+		"<option>" +
+		"<value>normal</value>" +
+		"</option>" +
+		"<option>" +
+		"<value>headline</value>" +
+		"</option>" +
+		"</field>" +
+		"</x>" +
+		"</configure>" +
+		"</pubsub>"
+
+	clientJid   = "hamlet@denmark.lit/elsinore"
+	serviceJid  = "pubsub.shakespeare.lit"
+	iqId        = "config1"
+	serviceNode = "princely_musings"
+)
+
+func TestMarshalFormSubmit(t *testing.T) {
+	formIQ, err := NewIQ(Attrs{From: clientJid, To: serviceJid, Id: iqId, Type: IQTypeSet})
+	if err != nil {
+		t.Fatalf("failed to create formIQ: %v", err)
+	}
+	formIQ.Payload = &PubSubOwner{
+		OwnerUseCase: &ConfigureOwner{
+			Node: serviceNode,
+			Form: &Form{
+				Type: FormTypeSubmit,
+				Fields: []*Field{
+					{Var: "FORM_TYPE", Type: FieldTypeHidden, ValuesList: []string{"http://jabber.org/protocol/pubsub#node_config"}},
+					{Var: "pubsub#title", ValuesList: []string{"Princely Musings (Atom)"}},
+					{Var: "pubsub#deliver_notifications", ValuesList: []string{"1"}},
+					{Var: "pubsub#access_model", ValuesList: []string{"roster"}},
+					{Var: "pubsub#roster_groups_allowed", ValuesList: []string{"friends", "servants", "courtiers"}},
+					{Var: "pubsub#type", ValuesList: []string{"http://www.w3.org/2005/Atom"}},
+					{
+						Var:        "pubsub#notification_type",
+						Type:       "list-single",
+						Label:      "Specify the delivery style for event notifications",
+						ValuesList: []string{"headline"},
+						Options: []Option{
+							{ValuesList: []string{"normal"}},
+							{ValuesList: []string{"headline"}},
+						},
+					},
+				},
+			},
+		},
+	}
+	b, err := xml.Marshal(formIQ.Payload)
+	if err != nil {
+		t.Fatalf("Could not marshal formIQ : %v", err)
+	}
+
+	if strings.ReplaceAll(string(b), " ", "") != strings.ReplaceAll(formSubmit, " ", "") {
+		t.Fatalf("Expected formIQ and marshalled one are different.\nExepected : %s\nMarshalled : %s", formSubmit, string(b))
+	}
+
+}
+
+func TestUnmarshalFormSubmit(t *testing.T) {
+	var f PubSubOwner
+	mErr := xml.Unmarshal([]byte(formSubmit), &f)
+	if mErr != nil {
+		t.Fatalf("failed to unmarshal formSubmit ! %s", mErr)
+	}
+
+	data, err := xml.Marshal(&f)
+	if err != nil {
+		t.Fatalf("failed to marshal formSubmit")
+	}
+
+	if strings.ReplaceAll(string(data), " ", "") != strings.ReplaceAll(formSubmit, " ", "") {
+		t.Fatalf("failed unmarshal/marshal for formSubmit : %s\n%s", string(data), formSubmit)
+	}
+}

stanza/iot.go

@@ -7,12 +7,18 @@ import (
 type ControlSet struct {
 	XMLName xml.Name       `xml:"urn:xmpp:iot:control set"`
 	Fields  []ControlField `xml:",any"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (c *ControlSet) Namespace() string {
 	return c.XMLName.Space
 }
 
+func (c *ControlSet) GetSet() *ResultSet {
+	return c.ResultSet
+}
+
 type ControlGetForm struct {
 	XMLName xml.Name `xml:"urn:xmpp:iot:control getForm"`
 }
@@ -30,10 +36,13 @@ type ControlSetResponse struct {
 func (c *ControlSetResponse) Namespace() string {
 	return c.XMLName.Space
 }
+func (c *ControlSetResponse) GetSet() *ResultSet {
+	return nil
+}
 
 // ============================================================================
 // Registry init
 
 func init() {
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"urn:xmpp:iot:control", "set"}, ControlSet{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "urn:xmpp:iot:control", Local: "set"}, ControlSet{})
 }

stanza/iq.go

@@ -2,6 +2,10 @@ package stanza
 
 import (
 	"encoding/xml"
+	"errors"
+	"strings"
+
+	"github.com/google/uuid"
 )
 
 /*
@@ -21,48 +25,63 @@ type IQ struct { // Info/Query
 	//    child element, which specifies the semantics of the particular
 	//    request."
 	Payload IQPayload `xml:",omitempty"`
-	Error   Err       `xml:"error,omitempty"`
+	Error   *Err      `xml:"error,omitempty"`
 	// Any is used to decode unknown payload as a generic structure
 	Any *Node `xml:",any"`
 }
 
 type IQPayload interface {
 	Namespace() string
+	GetSet() *ResultSet
 }
 
-func NewIQ(a Attrs) IQ {
-	// TODO generate IQ ID if not set
-	// TODO ensure that type is set, as it is required
-	return IQ{
+func NewIQ(a Attrs) (*IQ, error) {
+	if a.Id == "" {
+		if id, err := uuid.NewRandom(); err == nil {
+			a.Id = id.String()
+		}
+	}
+
+	iq := IQ{
 		XMLName: xml.Name{Local: "iq"},
 		Attrs:   a,
 	}
+
+	if iq.Type.IsEmpty() {
+		return nil, IqTypeUnset
+	}
+	return &iq, nil
 }
 
-func (iq IQ) MakeError(xerror Err) IQ {
+func (iq *IQ) MakeError(xerror Err) *IQ {
 	from := iq.From
 	to := iq.To
 
 	iq.Type = "error"
 	iq.From = to
 	iq.To = from
-	iq.Error = xerror
+	iq.Error = &xerror
 
 	return iq
 }
 
-func (IQ) Name() string {
+func (*IQ) Name() string {
 	return "iq"
 }
 
+// NoOp to implement BiDirIteratorElt
+func (*IQ) NoOp() {
+
+}
+
 type iqDecoder struct{}
 
 var iq iqDecoder
 
-func (iqDecoder) decode(p *xml.Decoder, se xml.StartElement) (IQ, error) {
+func (iqDecoder) decode(p *xml.Decoder, se xml.StartElement) (*IQ, error) {
 	var packet IQ
 	err := p.DecodeElement(&packet, &se)
-	return packet, err
+	return &packet, err
 }
 
 // UnmarshalXML implements custom parsing for IQs
@@ -100,7 +119,7 @@ func (iq *IQ) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 				if err != nil {
 					return err
 				}
-				iq.Error = xmppError
+				iq.Error = &xmppError
 				continue
 			}
 			if iqExt := TypeRegistry.GetIQExtension(tt.Name); iqExt != nil {
@@ -126,3 +145,48 @@ func (iq *IQ) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 		}
 	}
 }
+
+var (
+	IqTypeUnset  = errors.New("iq type is not set but is mandatory")
+	IqIDUnset    = errors.New("iq stanza ID is not set but is mandatory")
+	IqSGetNoPl   = errors.New("iq is of type get or set but has no payload")
+	IqResNoPl    = errors.New("iq is of type result but has no payload")
+	IqErrNoErrPl = errors.New("iq is of type error but has no error payload")
+)
+
+// IsValid checks if the IQ is valid. If not, return an error with the reason as a message
+// Following RFC-3920 for IQs
+func (iq *IQ) IsValid() (bool, error) {
+	// ID is required
+	if len(strings.TrimSpace(iq.Id)) == 0 {
+		return false, IqIDUnset
+	}
+
+	// Type is required
+	if iq.Type.IsEmpty() {
+		return false, IqTypeUnset
+	}
+
+	// Type get and set must contain one and only one child element that specifies the semantics
+	if iq.Type == IQTypeGet || iq.Type == IQTypeSet {
+		if iq.Payload == nil && iq.Any == nil {
+			return false, IqSGetNoPl
+		}
+	}
+
+	// A result must include zero or one child element
+	if iq.Type == IQTypeResult {
+		if iq.Payload != nil && iq.Any != nil {
+			return false, IqResNoPl
+		}
+	}
+
+	//Error type must contain an "error" child element
+	if iq.Type == IQTypeError {
+		if iq.Error == nil {
+			return false, IqErrNoErrPl
+		}
+	}
+
+	return true, nil
+}

stanza/iq_disco.go

@@ -8,6 +8,7 @@ import (
 // Disco Info
 
 const (
+	// NSDiscoInfo defines the namespace for disco IQ stanzas
 	NSDiscoInfo = "http://jabber.org/protocol/disco#info"
 )
 
@@ -15,16 +16,22 @@ const (
 // Namespaces
 
 type DiscoInfo struct {
-	XMLName  xml.Name   `xml:"http://jabber.org/protocol/disco#info query"`
-	Node     string     `xml:"node,attr,omitempty"`
-	Identity []Identity `xml:"identity"`
-	Features []Feature  `xml:"feature"`
+	XMLName   xml.Name   `xml:"http://jabber.org/protocol/disco#info query"`
+	Node      string     `xml:"node,attr,omitempty"`
+	Identity  []Identity `xml:"identity"`
+	Features  []Feature  `xml:"feature"`
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
+// Namespace lets DiscoInfo implement the IQPayload interface
 func (d *DiscoInfo) Namespace() string {
 	return d.XMLName.Space
 }
 
+func (d *DiscoInfo) GetSet() *ResultSet {
+	return d.ResultSet
+}
+
 // ---------------
 // Builder helpers
 
@@ -100,19 +107,26 @@ type DiscoItems struct {
 	XMLName xml.Name    `xml:"http://jabber.org/protocol/disco#items query"`
 	Node    string      `xml:"node,attr,omitempty"`
 	Items   []DiscoItem `xml:"item"`
+
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (d *DiscoItems) Namespace() string {
 	return d.XMLName.Space
 }
 
+func (d *DiscoItems) GetSet() *ResultSet {
+	return d.ResultSet
+}
+
 // ---------------
 // Builder helpers
 
 // DiscoItems builds a default DiscoItems payload
 func (iq *IQ) DiscoItems() *DiscoItems {
 	d := DiscoItems{
-		XMLName: xml.Name{Space: "http://jabber.org/protocol/disco#items", Local: "query"},
+		XMLName: xml.Name{Space: NSDiscoItems, Local: "query"},
 	}
 	iq.Payload = &d
 	return &d
@@ -144,6 +158,6 @@ type DiscoItem struct {
 // Registry init
 
 func init() {
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{NSDiscoInfo, "query"}, DiscoInfo{})
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{NSDiscoItems, "query"}, DiscoItems{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: NSDiscoInfo, Local: "query"}, DiscoInfo{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: NSDiscoItems, Local: "query"}, DiscoItems{})
 }

stanza/iq_disco_test.go

@@ -9,7 +9,10 @@ import (
 
 // Test DiscoInfo Builder with several features
 func TestDiscoInfo_Builder(t *testing.T) {
-	iq := stanza.NewIQ(stanza.Attrs{Type: "get", To: "service.localhost", Id: "disco-get-1"})
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: "get", To: "service.localhost", Id: "disco-get-1"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	disco := iq.DiscoInfo()
 	disco.AddIdentity("Test Component", "gateway", "service")
 	disco.AddFeatures(stanza.NSDiscoInfo, stanza.NSDiscoItems, "jabber:iq:version", "urn:xmpp:delegation:1")
@@ -50,8 +53,11 @@ func TestDiscoInfo_Builder(t *testing.T) {
 // Implements XEP-0030 example 17
 // https://xmpp.org/extensions/xep-0030.html#example-17
 func TestDiscoItems_Builder(t *testing.T) {
-	iq := stanza.NewIQ(stanza.Attrs{Type: "result", From: "catalog.shakespeare.lit",
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeResult, From: "catalog.shakespeare.lit",
 		To: "romeo@montague.net/orchard", Id: "items-2"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	iq.DiscoItems().
 		AddItem("catalog.shakespeare.lit", "books", "Books by and about Shakespeare").
 		AddItem("catalog.shakespeare.lit", "clothing", "Wear your literary taste with pride").
@@ -73,11 +79,11 @@ func TestDiscoItems_Builder(t *testing.T) {
 		{xml.Name{}, "catalog.shakespeare.lit", "clothing", "Wear your literary taste with pride"},
 		{xml.Name{}, "catalog.shakespeare.lit", "music", "Music from the time of Shakespeare"}}
 	if len(pp.Items) != len(items) {
-		t.Errorf("Items length mismatch: %#v", pp.Items)
+		t.Errorf("List length mismatch: %#v", pp.Items)
 	} else {
 		for i, item := range pp.Items {
 			if item.JID != items[i].JID {
-				t.Errorf("JID Mismatch (expected: %s): %s", items[i].JID, item.JID)
+				t.Errorf("Jid Mismatch (expected: %s): %s", items[i].JID, item.JID)
 			}
 			if item.Node != items[i].Node {
 				t.Errorf("Node Mismatch (expected: %s): %s", items[i].JID, item.JID)

stanza/iq_roster.go

@@ -0,0 +1,126 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// ============================================================================
+// Roster
+
+const (
+	// NSRoster is the Roster IQ namespace
+	NSRoster = "jabber:iq:roster"
+	// SubscriptionNone indicates the user does not have a subscription to
+	// the contact's presence, and the contact does not have a subscription
+	// to the user's presence; this is the default value, so if the subscription
+	// attribute is not included then the state is to be understood as "none"
+	SubscriptionNone = "none"
+
+	// SubscriptionTo indicates the user has a subscription to the contact's
+	// presence, but the contact does not have a subscription to the user's presence.
+	SubscriptionTo = "to"
+
+	// SubscriptionFrom indicates the contact has a subscription to the user's
+	// presence, but the user does not have a subscription to the contact's presence
+	SubscriptionFrom = "from"
+
+	// SubscriptionBoth indicates the user and the contact have subscriptions to each
+	// other's presence (also called a "mutual subscription")
+	SubscriptionBoth = "both"
+)
+
+// ----------
+// Namespaces
+
+// Roster struct represents Roster IQs
+type Roster struct {
+	XMLName xml.Name `xml:"jabber:iq:roster query"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
+}
+
+// Namespace defines the namespace for the RosterIQ
+func (r *Roster) Namespace() string {
+	return r.XMLName.Space
+}
+func (r *Roster) GetSet() *ResultSet {
+	return r.ResultSet
+}
+
+// ---------------
+// Builder helpers
+
+// RosterIQ builds a default Roster payload
+func (iq *IQ) RosterIQ() *Roster {
+	r := Roster{
+		XMLName: xml.Name{
+			Space: NSRoster,
+			Local: "query",
+		},
+	}
+	iq.Payload = &r
+	return &r
+}
+
+// -----------
+// SubElements
+
+// RosterItems represents the list of items in a roster IQ
+type RosterItems struct {
+	XMLName xml.Name     `xml:"jabber:iq:roster query"`
+	Items   []RosterItem `xml:"item"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
+}
+
+// Namespace lets RosterItems implement the IQPayload interface
+func (r *RosterItems) Namespace() string {
+	return r.XMLName.Space
+}
+
+func (r *RosterItems) GetSet() *ResultSet {
+	return r.ResultSet
+}
+
+// RosterItem represents an item in the roster iq
+type RosterItem struct {
+	XMLName      xml.Name `xml:"jabber:iq:roster item"`
+	Jid          string   `xml:"jid,attr"`
+	Ask          string   `xml:"ask,attr,omitempty"`
+	Name         string   `xml:"name,attr,omitempty"`
+	Subscription string   `xml:"subscription,attr,omitempty"`
+	Groups       []string `xml:"group"`
+}
+
+// ---------------
+// Builder helpers
+
+// RosterItems builds a default RosterItems payload
+func (iq *IQ) RosterItems() *RosterItems {
+	ri := RosterItems{
+		XMLName: xml.Name{Space: "jabber:iq:roster", Local: "query"},
+	}
+	iq.Payload = &ri
+	return &ri
+}
+
+// AddItem builds an item and ads it to the roster IQ
+func (r *RosterItems) AddItem(jid, subscription, ask, name string, groups []string) *RosterItems {
+	item := RosterItem{
+		Jid:          jid,
+		Name:         name,
+		Groups:       groups,
+		Subscription: subscription,
+		Ask:          ask,
+	}
+	r.Items = append(r.Items, item)
+	return r
+}
+
+// ============================================================================
+// Registry init
+
+func init() {
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: NSRoster, Local: "query"}, Roster{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: NSRoster, Local: "query"}, RosterItems{})
+}

stanza/iq_roster_test.go

@@ -0,0 +1,112 @@
+package stanza
+
+import (
+	"encoding/xml"
+	"reflect"
+	"testing"
+)
+
+func TestRosterBuilder(t *testing.T) {
+	iq, err := NewIQ(Attrs{Type: IQTypeResult, From: "romeo@montague.net/orchard"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	var noGroup []string
+
+	iq.RosterItems().AddItem("xl8ceawrfu8zdneomw1h6h28d@crypho.com",
+		SubscriptionBoth,
+		"",
+		"xl8ceaw",
+		[]string{"0flucpm8i2jtrjhxw01uf1nd2",
+			"bm2bajg9ex4e1swiuju9i9nu5",
+			"rvjpanomi4ejpx42fpmffoac0"}).
+		AddItem("9aynsym60zbu78jbdvpho7s68@crypho.com",
+			SubscriptionBoth,
+			"",
+			"9aynsym60",
+			[]string{"mzaoy73i6ra5k502182zi1t97"}).
+		AddItem("admin@crypho.com",
+			SubscriptionBoth,
+			"",
+			"admin",
+			noGroup)
+
+	parsedIQ, err := checkMarshalling(t, iq)
+	if err != nil {
+		return
+	}
+
+	// Check result
+	pp, ok := parsedIQ.Payload.(*RosterItems)
+	if !ok {
+		t.Errorf("Parsed stanza does not contain correct IQ payload")
+	}
+
+	// Check items
+	items := []RosterItem{
+		{
+			XMLName:      xml.Name{},
+			Name:         "xl8ceaw",
+			Ask:          "",
+			Jid:          "xl8ceawrfu8zdneomw1h6h28d@crypho.com",
+			Subscription: SubscriptionBoth,
+			Groups: []string{"0flucpm8i2jtrjhxw01uf1nd2",
+				"bm2bajg9ex4e1swiuju9i9nu5",
+				"rvjpanomi4ejpx42fpmffoac0"},
+		},
+		{
+			XMLName:      xml.Name{},
+			Name:         "9aynsym60",
+			Ask:          "",
+			Jid:          "9aynsym60zbu78jbdvpho7s68@crypho.com",
+			Subscription: SubscriptionBoth,
+			Groups:       []string{"mzaoy73i6ra5k502182zi1t97"},
+		},
+		{
+			XMLName:      xml.Name{},
+			Name:         "admin",
+			Ask:          "",
+			Jid:          "admin@crypho.com",
+			Subscription: SubscriptionBoth,
+			Groups:       noGroup,
+		},
+	}
+	if len(pp.Items) != len(items) {
+		t.Errorf("List length mismatch: %#v", pp.Items)
+	} else {
+		for i, item := range pp.Items {
+			if item.Jid != items[i].Jid {
+				t.Errorf("Jid Mismatch (expected: %s): %s", items[i].Jid, item.Jid)
+			}
+			if !reflect.DeepEqual(item.Groups, items[i].Groups) {
+				t.Errorf("Node Mismatch (expected: %s): %s", items[i].Jid, item.Jid)
+			}
+			if item.Name != items[i].Name {
+				t.Errorf("Name Mismatch (expected: %s): %s", items[i].Jid, item.Jid)
+			}
+			if item.Ask != items[i].Ask {
+				t.Errorf("Name Mismatch (expected: %s): %s", items[i].Jid, item.Jid)
+			}
+			if item.Subscription != items[i].Subscription {
+				t.Errorf("Name Mismatch (expected: %s): %s", items[i].Jid, item.Jid)
+			}
+		}
+	}
+}
+
+func checkMarshalling(t *testing.T, iq *IQ) (*IQ, error) {
+	// Marshall
+	data, err := xml.Marshal(iq)
+	if err != nil {
+		t.Errorf("cannot marshal iq: %s\n%#v", err, iq)
+		return nil, err
+	}
+
+	// Unmarshall
+	var parsedIQ IQ
+	err = xml.Unmarshal(data, &parsedIQ)
+	if err != nil {
+		t.Errorf("Unmarshal returned error: %s\n%s", err, data)
+	}
+	return &parsedIQ, err
+}

stanza/iq_test.go

@@ -34,8 +34,38 @@ func TestUnmarshalIqs(t *testing.T) {
 	}
 }
 
+func TestGenerateIqId(t *testing.T) {
+	t.Parallel()
+	iq, err := stanza.NewIQ(stanza.Attrs{Id: "1", Type: "dummy type"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	if iq.Id != "1" {
+		t.Errorf("NewIQ replaced id with %s", iq.Id)
+	}
+
+	iq, err = stanza.NewIQ(stanza.Attrs{Type: "dummy type"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	if iq.Id == "" {
+		t.Error("NewIQ did not generate an Id")
+	}
+
+	otherIq, err := stanza.NewIQ(stanza.Attrs{Type: "dummy type"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	if iq.Id == otherIq.Id {
+		t.Errorf("NewIQ generated two identical ids: %s", iq.Id)
+	}
+}
+
 func TestGenerateIq(t *testing.T) {
-	iq := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeResult, From: "admin@localhost", To: "test@localhost", Id: "1"})
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeResult, From: "admin@localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	payload := stanza.DiscoInfo{
 		Identity: []stanza.Identity{
 			{Name: "Test Gateway",
@@ -93,7 +123,10 @@ func TestErrorTag(t *testing.T) {
 }
 
 func TestDiscoItems(t *testing.T) {
-	iq := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "romeo@montague.net/orchard", To: "catalog.shakespeare.lit", Id: "items3"})
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeGet, From: "romeo@montague.net/orchard", To: "catalog.shakespeare.lit", Id: "items3"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	payload := stanza.DiscoItems{
 		Node: "music",
 	}
@@ -169,3 +202,39 @@ func TestUnknownPayload(t *testing.T) {
 		t.Errorf("could not extract namespace: '%s'", parsedIQ.Any.XMLName.Space)
 	}
 }
+
+func TestIsValid(t *testing.T) {
+	type testCase struct {
+		iq        string
+		shouldErr bool
+	}
+	testIQs := make(map[string]testCase)
+	testIQs["Valid IQ"] = testCase{
+		`<iq type="get" to="service.localhost" id="1" >
+ 			<query xmlns="unknown:ns"/>
+		</iq>`,
+		false,
+	}
+	testIQs["Invalid IQ"] = testCase{
+		`<iq type="get" to="service.localhost">
+ 			<query xmlns="unknown:ns"/>
+		</iq>`,
+		true,
+	}
+
+	for name, tcase := range testIQs {
+		t.Run(name, func(st *testing.T) {
+			parsedIQ := stanza.IQ{}
+			err := xml.Unmarshal([]byte(tcase.iq), &parsedIQ)
+			if err != nil {
+				t.Errorf("Unmarshal error: %#v (%s)", err, tcase.iq)
+				return
+			}
+			isValid, err := parsedIQ.IsValid()
+			if !isValid && !tcase.shouldErr {
+				t.Errorf("failed validation for iq because: %s\nin test case : %s", err, tcase.iq)
+			}
+		})
+	}
+
+}

stanza/iq_version.go

@@ -11,12 +11,18 @@ type Version struct {
 	Name    string   `xml:"name,omitempty"`
 	Version string   `xml:"version,omitempty"`
 	OS      string   `xml:"os,omitempty"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (v *Version) Namespace() string {
 	return v.XMLName.Space
 }
 
+func (v *Version) GetSet() *ResultSet {
+	return v.ResultSet
+}
+
 // ---------------
 // Builder helpers
 
@@ -41,5 +47,5 @@ func (v *Version) SetInfo(name, version, os string) *Version {
 // Registry init
 
 func init() {
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"jabber:iq:version", "query"}, Version{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "jabber:iq:version", Local: "query"}, Version{})
 }

stanza/iq_version_test.go

@@ -12,8 +12,11 @@ func TestVersion_Builder(t *testing.T) {
 	name := "Exodus"
 	version := "0.7.0.4"
 	os := "Windows-XP 5.01.2600"
-	iq := stanza.NewIQ(stanza.Attrs{Type: "result", From: "romeo@montague.net/orchard",
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: "romeo@montague.net/orchard",
 		To: "juliet@capulet.com/balcony", Id: "version_1"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	iq.Version().SetInfo(name, version, os)
 
 	parsedIQ, err := checkMarshalling(t, iq)

stanza/jid.go

@@ -1,4 +1,4 @@
-package xmpp
+package stanza
 
 import (
 	"fmt"
@@ -20,9 +20,9 @@ func NewJid(sjid string) (*Jid, error) {
 	}
 
 	s1 := strings.SplitN(sjid, "@", 2)
-	if len(s1) == 1 { // This is a server or component JID
+	if len(s1) == 1 { // This is a server or component Jid
 		jid.Domain = s1[0]
-	} else { // JID has a local username part
+	} else { // Jid has a local username part
 		if s1[0] == "" {
 			return jid, fmt.Errorf("invalid jid '%s", sjid)
 		}
@@ -41,21 +41,31 @@ func NewJid(sjid string) (*Jid, error) {
 	}
 
 	if !isUsernameValid(jid.Node) {
-		return jid, fmt.Errorf("invalid Node in JID '%s'", sjid)
+		return jid, fmt.Errorf("invalid Node in Jid '%s'", sjid)
 	}
 	if !isDomainValid(jid.Domain) {
-		return jid, fmt.Errorf("invalid domain in JID '%s'", sjid)
+		return jid, fmt.Errorf("invalid domain in Jid '%s'", sjid)
 	}
 
 	return jid, nil
 }
 
 func (j *Jid) Full() string {
-	return j.Node + "@" + j.Domain + "/" + j.Resource
+	if j.Resource == "" {
+		return j.Bare()
+	} else if j.Node == "" {
+		return j.Node + "/" + j.Resource
+	} else {
+		return j.Node + "@" + j.Domain + "/" + j.Resource
+	}
 }
 
 func (j *Jid) Bare() string {
-	return j.Node + "@" + j.Domain
+	if j.Node == "" {
+		return j.Domain
+	} else {
+		return j.Node + "@" + j.Domain
+	}
 }
 
 // ============================================================================

stanza/jid_test.go

@@ -1,4 +1,4 @@
-package xmpp
+package stanza
 
 import (
 	"testing"
@@ -61,26 +61,41 @@ func TestIncorrectJids(t *testing.T) {
 }
 
 func TestFull(t *testing.T) {
-	jid := "test@domain.com/my resource"
-	parsedJid, err := NewJid(jid)
-	if err != nil {
-		t.Errorf("could not parse jid: %v", err)
+	fullJids := []string{
+		"test@domain.com/my resource",
+		"test@domain.com",
+		"domain.com",
 	}
-	fullJid := parsedJid.Full()
-	if fullJid != jid {
-		t.Errorf("incorrect full jid: %s", fullJid)
+	for _, sjid := range fullJids {
+		parsedJid, err := NewJid(sjid)
+		if err != nil {
+			t.Errorf("could not parse jid: %v", err)
+		}
+		fullJid := parsedJid.Full()
+		if fullJid != sjid {
+			t.Errorf("incorrect full jid: %s", fullJid)
+		}
 	}
 }
 
 func TestBare(t *testing.T) {
-	jid := "test@domain.com"
-	fullJid := jid + "/my resource"
-	parsedJid, err := NewJid(fullJid)
-	if err != nil {
-		t.Errorf("could not parse jid: %v", err)
+	tests := []struct {
+		jidstr   string
+		expected string
+	}{
+		{jidstr: "test@domain.com", expected: "test@domain.com"},
+		{jidstr: "test@domain.com/resource", expected: "test@domain.com"},
+		{jidstr: "domain.com", expected: "domain.com"},
 	}
-	bareJid := parsedJid.Bare()
-	if bareJid != jid {
-		t.Errorf("incorrect bare jid: %s", bareJid)
+
+	for _, tt := range tests {
+		parsedJid, err := NewJid(tt.jidstr)
+		if err != nil {
+			t.Errorf("could not parse jid: %v", err)
+		}
+		bareJid := parsedJid.Bare()
+		if bareJid != tt.expected {
+			t.Errorf("incorrect bare jid: %s", bareJid)
+		}
 	}
 }

stanza/msg_chat_markers.go

@@ -35,8 +35,8 @@ type MarkAcknowledged struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatMarkers, "markable"}, Markable{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatMarkers, "received"}, MarkReceived{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatMarkers, "displayed"}, MarkDisplayed{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatMarkers, "acknowledged"}, MarkAcknowledged{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatMarkers, Local: "markable"}, Markable{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatMarkers, Local: "received"}, MarkReceived{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatMarkers, Local: "displayed"}, MarkDisplayed{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatMarkers, Local: "acknowledged"}, MarkAcknowledged{})
 }

stanza/msg_chat_state.go

@@ -37,9 +37,9 @@ type StatePaused struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatStateNotifications, "active"}, StateActive{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatStateNotifications, "composing"}, StateComposing{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatStateNotifications, "gone"}, StateGone{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatStateNotifications, "inactive"}, StateInactive{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgChatStateNotifications, "paused"}, StatePaused{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatStateNotifications, Local: "active"}, StateActive{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatStateNotifications, Local: "composing"}, StateComposing{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatStateNotifications, Local: "gone"}, StateGone{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatStateNotifications, Local: "inactive"}, StateInactive{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgChatStateNotifications, Local: "paused"}, StatePaused{})
 }

stanza/msg_hint.go

@@ -0,0 +1,36 @@
+package stanza
+
+import "encoding/xml"
+
+/*
+Support for:
+- XEP-0334: Message Processing Hints: https://xmpp.org/extensions/xep-0334.html
+Pointers should be used to keep consistent with unmarshal. Eg :
+msg.Extensions = append(msg.Extensions, &stanza.HintNoCopy{}, &stanza.HintStore{})
+*/
+
+type HintNoPermanentStore struct {
+	MsgExtension
+	XMLName xml.Name `xml:"urn:xmpp:hints no-permanent-store"`
+}
+
+type HintNoStore struct {
+	MsgExtension
+	XMLName xml.Name `xml:"urn:xmpp:hints no-store"`
+}
+
+type HintNoCopy struct {
+	MsgExtension
+	XMLName xml.Name `xml:"urn:xmpp:hints no-copy"`
+}
+type HintStore struct {
+	MsgExtension
+	XMLName xml.Name `xml:"urn:xmpp:hints store"`
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "urn:xmpp:hints", Local: "no-permanent-store"}, HintNoPermanentStore{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "urn:xmpp:hints", Local: "no-store"}, HintNoStore{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "urn:xmpp:hints", Local: "no-copy"}, HintNoCopy{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "urn:xmpp:hints", Local: "store"}, HintStore{})
+}

stanza/msg_hint_test.go

@@ -0,0 +1,72 @@
+package stanza_test
+
+import (
+	"encoding/xml"
+	"gosrc.io/xmpp/stanza"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+const msg_const = `
+<message
+    from="romeo@montague.lit/laptop"
+    to="juliet@capulet.lit/laptop">
+  <body>V unir avtugf pybnx gb uvqr zr sebz gurve fvtug</body>
+  <no-copy xmlns="urn:xmpp:hints"></no-copy>
+  <no-permanent-store xmlns="urn:xmpp:hints"></no-permanent-store>
+  <no-store xmlns="urn:xmpp:hints"></no-store>
+  <store xmlns="urn:xmpp:hints"></store>
+</message>`
+
+func TestSerializationHint(t *testing.T) {
+	msg := stanza.NewMessage(stanza.Attrs{To: "juliet@capulet.lit/laptop", From: "romeo@montague.lit/laptop"})
+	msg.Body = "V unir avtugf pybnx gb uvqr zr sebz gurve fvtug"
+	msg.Extensions = append(msg.Extensions, stanza.HintNoCopy{}, stanza.HintNoPermanentStore{}, stanza.HintNoStore{}, stanza.HintStore{})
+	data, _ := xml.Marshal(msg)
+	if strings.ReplaceAll(strings.Join(strings.Fields(msg_const), ""), "\n", "") != strings.Join(strings.Fields(string(data)), "") {
+		t.Fatalf("marshalled message does not match expected message")
+	}
+}
+
+func TestUnmarshalHints(t *testing.T) {
+	// Init message as in the const value
+	msgConst := stanza.NewMessage(stanza.Attrs{To: "juliet@capulet.lit/laptop", From: "romeo@montague.lit/laptop"})
+	msgConst.Body = "V unir avtugf pybnx gb uvqr zr sebz gurve fvtug"
+	msgConst.Extensions = append(msgConst.Extensions, &stanza.HintNoCopy{}, &stanza.HintNoPermanentStore{}, &stanza.HintNoStore{}, &stanza.HintStore{})
+
+	// Compare message with the const value
+	msg := stanza.Message{}
+	err := xml.Unmarshal([]byte(msg_const), &msg)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if msgConst.XMLName.Local != msg.XMLName.Local {
+		t.Fatalf("message tags do not match. Expected: %s, Actual: %s", msgConst.XMLName.Local, msg.XMLName.Local)
+	}
+	if msgConst.Body != msg.Body {
+		t.Fatalf("message bodies do not match. Expected: %s, Actual: %s", msgConst.Body, msg.Body)
+	}
+
+	if !reflect.DeepEqual(msgConst.Attrs, msg.Attrs) {
+		t.Fatalf("attributes do not match")
+	}
+
+	if !reflect.DeepEqual(msgConst.Error, msg.Error) {
+		t.Fatalf("attributes do not match")
+	}
+	var found bool
+	for _, ext := range msgConst.Extensions {
+		for _, strExt := range msg.Extensions {
+			if reflect.TypeOf(ext) == reflect.TypeOf(strExt) {
+				found = true
+				break
+			}
+		}
+		if !found {
+			t.Fatalf("extensions do not match")
+		}
+		found = false
+	}
+}

stanza/msg_html.go

@@ -18,5 +18,5 @@ type HTMLBody struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{"http://jabber.org/protocol/xhtml-im", "html"}, HTML{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "http://jabber.org/protocol/xhtml-im", Local: "html"}, HTML{})
 }

stanza/msg_oob.go

@@ -17,5 +17,5 @@ type OOB struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{"jabber:x:oob", "x"}, OOB{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "jabber:x:oob", Local: "x"}, OOB{})
 }

stanza/msg_pubsub_event.go

@@ -0,0 +1,213 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// Implementation of the http://jabber.org/protocol/pubsub#event namespace
+type PubSubEvent struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/pubsub#event event"`
+	MsgExtension
+	EventElement EventElement
+	//List ItemsEvent
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: "http://jabber.org/protocol/pubsub#event", Local: "event"}, PubSubEvent{})
+}
+
+type EventElement interface {
+	Name() string
+}
+
+// *********************
+// Collection
+// *********************
+
+const PubSubCollectionEventName = "Collection"
+
+type CollectionEvent struct {
+	AssocDisassoc AssocDisassoc
+	Node          string `xml:"node,attr,omitempty"`
+}
+
+func (c CollectionEvent) Name() string {
+	return PubSubCollectionEventName
+}
+
+// *********************
+// Associate/Disassociate
+// *********************
+type AssocDisassoc interface {
+	GetAssocDisassoc() string
+}
+
+// *********************
+// Associate
+// *********************
+const Assoc = "Associate"
+
+type AssociateEvent struct {
+	XMLName xml.Name `xml:"associate"`
+	Node    string   `xml:"node,attr"`
+}
+
+func (a *AssociateEvent) GetAssocDisassoc() string {
+	return Assoc
+}
+
+// *********************
+// Disassociate
+// *********************
+const Disassoc = "Disassociate"
+
+type DisassociateEvent struct {
+	XMLName xml.Name `xml:"disassociate"`
+	Node    string   `xml:"node,attr"`
+}
+
+func (e *DisassociateEvent) GetAssocDisassoc() string {
+	return Disassoc
+}
+
+// *********************
+// Configuration
+// *********************
+
+const PubSubConfigEventName = "Configuration"
+
+type ConfigurationEvent struct {
+	Node string `xml:"node,attr,omitempty"`
+	Form *Form
+}
+
+func (c ConfigurationEvent) Name() string {
+	return PubSubConfigEventName
+}
+
+// *********************
+// Delete
+// *********************
+const PubSubDeleteEventName = "Delete"
+
+type DeleteEvent struct {
+	Node     string         `xml:"node,attr"`
+	Redirect *RedirectEvent `xml:"redirect"`
+}
+
+func (c DeleteEvent) Name() string {
+	return PubSubConfigEventName
+}
+
+// *********************
+// Redirect
+// *********************
+type RedirectEvent struct {
+	URI string `xml:"uri,attr"`
+}
+
+// *********************
+// List
+// *********************
+
+const PubSubItemsEventName = "List"
+
+type ItemsEvent struct {
+	XMLName xml.Name      `xml:"items"`
+	Items   []ItemEvent   `xml:"item,omitempty"`
+	Node    string        `xml:"node,attr"`
+	Retract *RetractEvent `xml:"retract"`
+}
+
+type ItemEvent struct {
+	XMLName   xml.Name `xml:"item"`
+	Id        string   `xml:"id,attr,omitempty"`
+	Publisher string   `xml:"publisher,attr,omitempty"`
+	Any       *Node    `xml:",any"`
+}
+
+func (i ItemsEvent) Name() string {
+	return PubSubItemsEventName
+}
+
+// *********************
+// List
+// *********************
+
+type RetractEvent struct {
+	XMLName xml.Name `xml:"retract"`
+	ID      string   `xml:"node,attr"`
+}
+
+// *********************
+// Purge
+// *********************
+const PubSubPurgeEventName = "Purge"
+
+type PurgeEvent struct {
+	XMLName xml.Name `xml:"purge"`
+	Node    string   `xml:"node,attr"`
+}
+
+func (p PurgeEvent) Name() string {
+	return PubSubPurgeEventName
+}
+
+// *********************
+// Subscription
+// *********************
+const PubSubSubscriptionEventName = "Subscription"
+
+type SubscriptionEvent struct {
+	SubStatus string `xml:"subscription,attr,omitempty"`
+	Expiry    string `xml:"expiry,attr,omitempty"`
+	SubInfo   `xml:",omitempty"`
+}
+
+func (s SubscriptionEvent) Name() string {
+	return PubSubSubscriptionEventName
+}
+
+func (pse *PubSubEvent) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	pse.XMLName = start.Name
+	// decode inner elements
+	for {
+		t, err := d.Token()
+		if err != nil {
+			return err
+		}
+		var ee EventElement
+		switch tt := t.(type) {
+		case xml.StartElement:
+			switch tt.Name.Local {
+			case "collection":
+				ee = &CollectionEvent{}
+			case "configuration":
+				ee = &ConfigurationEvent{}
+			case "delete":
+				ee = &DeleteEvent{}
+			case "items":
+				ee = &ItemsEvent{}
+			case "purge":
+				ee = &PurgeEvent{}
+			case "subscription":
+				ee = &SubscriptionEvent{}
+			default:
+				ee = nil
+			}
+			// known child element found, decode it
+			if ee != nil {
+				err = d.DecodeElement(ee, &tt)
+				if err != nil {
+					return err
+				}
+				pse.EventElement = ee
+			}
+		case xml.EndElement:
+			if tt == start.End() {
+				return nil
+			}
+		}
+
+	}
+}

stanza/msg_pubsub_event_test.go

@@ -0,0 +1,162 @@
+package stanza_test
+
+import (
+	"encoding/xml"
+	"gosrc.io/xmpp/stanza"
+	"strings"
+	"testing"
+)
+
+func TestDecodeMsgEvent(t *testing.T) {
+	str := `<message from='pubsub.shakespeare.lit' to='francisco@denmark.lit' id='foo'>
+	 <event xmlns='http://jabber.org/protocol/pubsub#event'>
+	   <items node='princely_musings'>
+	     <item id='ae890ac52d0df67ed7cfdf51b644e901'>
+	       <entry xmlns='http://www.w3.org/2005/Atom'>
+	         <title>Soliloquy</title>
+	         <summary>
+	To be, or not to be: that is the question:
+	Whether 'tis nobler in the mind to suffer
+	The slings and arrows of outrageous fortune,
+	Or to take arms against a sea of troubles,
+	And by opposing end them?
+	         </summary>
+	         <link rel='alternate' type='text/html'
+	               href='http://denmark.lit/2003/12/13/atom03'/>
+	         <id>tag:denmark.lit,2003:entry-32397</id>
+	         <published>2003-12-13T18:30:02Z</published>
+	         <updated>2003-12-13T18:30:02Z</updated>
+	       </entry>
+	     </item>
+	   </items>
+	 </event>
+	</message>
+	`
+	parsedMessage := stanza.Message{}
+	if err := xml.Unmarshal([]byte(str), &parsedMessage); err != nil {
+		t.Errorf("message receipt unmarshall error: %v", err)
+		return
+	}
+
+	if parsedMessage.Body != "" {
+		t.Errorf("Unexpected body: '%s'", parsedMessage.Body)
+	}
+
+	if len(parsedMessage.Extensions) < 1 {
+		t.Errorf("no extension found on parsed message")
+		return
+	}
+
+	switch ext := parsedMessage.Extensions[0].(type) {
+	case *stanza.PubSubEvent:
+		if ext.XMLName.Local != "event" {
+			t.Fatalf("unexpected extension: %s:%s", ext.XMLName.Space, ext.XMLName.Local)
+		}
+		tmp, ok := parsedMessage.Extensions[0].(*stanza.PubSubEvent)
+		if !ok {
+			t.Fatalf("unexpected extension element: %s:%s", ext.XMLName.Space, ext.XMLName.Local)
+		}
+		ie, ok := tmp.EventElement.(*stanza.ItemsEvent)
+		if !ok {
+			t.Fatalf("unexpected extension element: %s:%s", ext.XMLName.Space, ext.XMLName.Local)
+		}
+		if ie.Items[0].Any.Nodes[0].Content != "Soliloquy" {
+			t.Fatalf("could not read title ! Read this : %s", ie.Items[0].Any.Nodes[0].Content)
+		}
+
+		if len(ie.Items[0].Any.Nodes) != 6 {
+			t.Fatalf("some nodes were not correctly parsed")
+		}
+	default:
+		t.Fatalf("could not find pubsub event extension")
+	}
+
+}
+
+func TestEncodeEvent(t *testing.T) {
+	expected := "<message><event xmlns=\"http://jabber.org/protocol/pubsub#event\">" +
+		"<items node=\"princely_musings\"><item id=\"ae890ac52d0df67ed7cfdf51b644e901\">" +
+		"<entry xmlns=\"http://www.w3.org/2005/Atom\"><title>My pub item title</title>" +
+		"<summary>My pub item content summary</summary><link rel=\"alternate\" " +
+		"type=\"text/html\" href=\"http://denmark.lit/2003/12/13/atom03\">" +
+		"</link><id>My pub item content ID</id><published>2003-12-13T18:30:02Z</published>" +
+		"<updated>2003-12-13T18:30:02Z</updated></entry></item></items></event></message>"
+	message := stanza.Message{
+		Extensions: []stanza.MsgExtension{
+			stanza.PubSubEvent{
+				EventElement: stanza.ItemsEvent{
+					Items: []stanza.ItemEvent{
+						{
+							Id: "ae890ac52d0df67ed7cfdf51b644e901",
+							Any: &stanza.Node{
+								XMLName: xml.Name{
+									Space: "http://www.w3.org/2005/Atom",
+									Local: "entry",
+								},
+								Attrs:   nil,
+								Content: "",
+								Nodes: []stanza.Node{
+									{
+										XMLName: xml.Name{Space: "", Local: "title"},
+										Attrs:   nil,
+										Content: "My pub item title",
+										Nodes:   nil,
+									},
+									{
+										XMLName: xml.Name{Space: "", Local: "summary"},
+										Attrs:   nil,
+										Content: "My pub item content summary",
+										Nodes:   nil,
+									},
+									{
+										XMLName: xml.Name{Space: "", Local: "link"},
+										Attrs: []xml.Attr{
+											{
+												Name:  xml.Name{Space: "", Local: "rel"},
+												Value: "alternate",
+											},
+											{
+												Name:  xml.Name{Space: "", Local: "type"},
+												Value: "text/html",
+											},
+											{
+												Name:  xml.Name{Space: "", Local: "href"},
+												Value: "http://denmark.lit/2003/12/13/atom03",
+											},
+										},
+									},
+									{
+										XMLName: xml.Name{Space: "", Local: "id"},
+										Attrs:   nil,
+										Content: "My pub item content ID",
+										Nodes:   nil,
+									},
+									{
+										XMLName: xml.Name{Space: "", Local: "published"},
+										Attrs:   nil,
+										Content: "2003-12-13T18:30:02Z",
+										Nodes:   nil,
+									},
+									{
+										XMLName: xml.Name{Space: "", Local: "updated"},
+										Attrs:   nil,
+										Content: "2003-12-13T18:30:02Z",
+										Nodes:   nil,
+									},
+								},
+							},
+						},
+					},
+					Node:    "princely_musings",
+					Retract: nil,
+				},
+			},
+		},
+	}
+
+	data, _ := xml.Marshal(message)
+	if strings.TrimSpace(string(data)) != strings.TrimSpace(expected) {
+		t.Errorf("event was not encoded properly : \nexpected:%s \ngot: %s", expected, string(data))
+	}
+
+}

stanza/msg_receipts.go

@@ -24,6 +24,6 @@ type ReceiptReceived struct {
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgReceipts, "request"}, ReceiptRequest{})
-	TypeRegistry.MapExtension(PKTMessage, xml.Name{NSMsgReceipts, "received"}, ReceiptReceived{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgReceipts, Local: "request"}, ReceiptRequest{})
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{Space: NSMsgReceipts, Local: "received"}, ReceiptReceived{})
 }

stanza/node.go

@@ -46,9 +46,18 @@ func (n Node) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
 	start.Name = n.XMLName
 
 	err = e.EncodeToken(start)
-	e.EncodeElement(n.Nodes, xml.StartElement{Name: n.XMLName})
+	if err != nil {
+		return err
+	}
+	err = e.EncodeElement(n.Nodes, xml.StartElement{Name: n.XMLName})
+	if err != nil {
+		return err
+	}
 	if n.Content != "" {
-		e.EncodeToken(xml.CharData(n.Content))
+		err = e.EncodeToken(xml.CharData(n.Content))
+		if err != nil {
+			return err
+		}
 	}
 	return e.EncodeToken(xml.EndElement{Name: start.Name})
 }

stanza/node_test.go

@@ -8,7 +8,10 @@ import (
 func TestNode_Marshal(t *testing.T) {
 	jsonData := []byte("{\"key\":\"value\"}")
 
-	iqResp := NewIQ(Attrs{Type: "result", From: "admin@localhost", To: "test@localhost", Id: "1"})
+	iqResp, err := NewIQ(Attrs{Type: "result", From: "admin@localhost", To: "test@localhost", Id: "1"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
 	iqResp.Any = &Node{
 		XMLName: xml.Name{Space: "myNS", Local: "space"},
 		Content: string(jsonData),

stanza/ns.go

@@ -6,6 +6,7 @@ const (
 	NSSASL      = "urn:ietf:params:xml:ns:xmpp-sasl"
 	NSBind      = "urn:ietf:params:xml:ns:xmpp-bind"
 	NSSession   = "urn:ietf:params:xml:ns:xmpp-session"
+	NSFraming   = "urn:ietf:params:xml:ns:xmpp-framing"
 	NSClient    = "jabber:client"
 	NSComponent = "jabber:component:accept"
 )

stanza/open.go

@@ -0,0 +1,13 @@
+package stanza
+
+import "encoding/xml"
+
+// Open Packet
+// Reference: WebSocket connections must start with this element
+//            https://tools.ietf.org/html/rfc7395#section-3.4
+type WebsocketOpen struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-framing open"`
+	From    string   `xml:"from,attr"`
+	Id      string   `xml:"id,attr"`
+	Version string   `xml:"version,attr"`
+}

stanza/packet_enum.go

@@ -1,5 +1,7 @@
 package stanza
 
+import "strings"
+
 type StanzaType string
 
 // RFC 6120: part of A.5 Client Namespace and A.6 Server Namespace
@@ -23,3 +25,7 @@ const (
 	PresenceTypeUnsubscribe  StanzaType = "unsubscribe"
 	PresenceTypeUnsubscribed StanzaType = "unsubscribed"
 )
+
+func (s StanzaType) IsEmpty() bool {
+	return len(strings.TrimSpace(string(s))) == 0
+}

stanza/parser.go

@@ -24,8 +24,10 @@ func InitStream(p *xml.Decoder) (sessionID string, err error) {
 
 		switch elem := t.(type) {
 		case xml.StartElement:
-			if elem.Name.Space != NSStream || elem.Name.Local != "stream" {
-				err = errors.New("xmpp: expected <stream> but got <" + elem.Name.Local + "> in " + elem.Name.Space)
+			isStreamOpen := elem.Name.Space == NSStream && elem.Name.Local == "stream"
+			isFrameOpen := elem.Name.Space == NSFraming && elem.Name.Local == "open"
+			if !isStreamOpen && !isFrameOpen {
+				err = errors.New("xmpp: expected <stream> or <open> but got <" + elem.Name.Local + "> in " + elem.Name.Space)
 				return sessionID, err
 			}
 
@@ -48,11 +50,20 @@ func InitStream(p *xml.Decoder) (sessionID string, err error) {
 // TODO make auth and bind use NextPacket instead of directly NextStart
 func NextPacket(p *xml.Decoder) (Packet, error) {
 	// Read start element to find out how we want to parse the XMPP packet
-	se, err := NextStart(p)
+	t, err := NextXmppToken(p)
 	if err != nil {
 		return nil, err
 	}
 
+	if ee, ok := t.(xml.EndElement); ok {
+		return decodeStream(p, ee)
+	}
+
+	// If not an end element, then must be a start
+	se, ok := t.(xml.StartElement)
+	if !ok {
+		return nil, errors.New("unknown token ")
+	}
 	// Decode one of the top level XMPP namespace
 	switch se.Name.Space {
 	case NSStream:
@@ -71,7 +82,29 @@ func NextPacket(p *xml.Decoder) (Packet, error) {
 	}
 }
 
-// Scan XML token stream to find next StartElement.
+// NextXmppToken scans XML token stream to find next StartElement or stream EndElement.
+// We need the EndElement scan, because we must register stream close tags
+func NextXmppToken(p *xml.Decoder) (xml.Token, error) {
+	for {
+		t, err := p.Token()
+		if err == io.EOF {
+			return xml.StartElement{}, errors.New("connection closed")
+		}
+		if err != nil {
+			return xml.StartElement{}, fmt.Errorf("NextStart %s", err)
+		}
+		switch t := t.(type) {
+		case xml.StartElement:
+			return t, nil
+		case xml.EndElement:
+			if t.Name.Space == NSStream && t.Name.Local == "stream" {
+				return t, nil
+			}
+		}
+	}
+}
+
+// NextStart scans XML token stream to find next StartElement.
 func NextStart(p *xml.Decoder) (xml.StartElement, error) {
 	for {
 		t, err := p.Token()
@@ -95,16 +128,29 @@ TODO: From all the decoder, we can return a pointer to the actual concrete type,
 */
 
 // decodeStream will fully decode a stream packet
-func decodeStream(p *xml.Decoder, se xml.StartElement) (Packet, error) {
-	switch se.Name.Local {
-	case "error":
-		return streamError.decode(p, se)
-	case "features":
-		return streamFeatures.decode(p, se)
-	default:
-		return nil, errors.New("unexpected XMPP packet " +
-			se.Name.Space + " <" + se.Name.Local + "/>")
+func decodeStream(p *xml.Decoder, t xml.Token) (Packet, error) {
+	if se, ok := t.(xml.StartElement); ok {
+		switch se.Name.Local {
+		case "error":
+			return streamError.decode(p, se)
+		case "features":
+			return streamFeatures.decode(p, se)
+		default:
+			return nil, errors.New("unexpected XMPP packet " +
+				se.Name.Space + " <" + se.Name.Local + "/>")
+		}
 	}
+
+	if ee, ok := t.(xml.EndElement); ok {
+		if ee.Name.Local == "stream" {
+			return streamClose.decode(ee), nil
+		}
+		return nil, errors.New("unexpected XMPP packet " +
+			ee.Name.Space + " <" + ee.Name.Local + "/>")
+	}
+
+	// Should not happen
+	return nil, errors.New("unexpected XML token ")
 }
 
 // decodeSASL decodes a packet related to SASL authentication.

stanza/pep.go

@@ -15,7 +15,7 @@ type Tune struct {
 	Uri     string   `xml:"uri,omitempty"`
 }
 
-// Mood defines deta model for XEP-0107 - User Mood
+// Mood defines data model for XEP-0107 - User Mood
 // See: https://xmpp.org/extensions/xep-0107.html
 type Mood struct {
 	MsgExtension          // Mood can be added as a message extension

stanza/pres_muc.go

@@ -144,5 +144,5 @@ func (h History) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error)
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTPresence, xml.Name{"http://jabber.org/protocol/muc", "x"}, MucPresence{})
+	TypeRegistry.MapExtension(PKTPresence, xml.Name{Space: "http://jabber.org/protocol/muc", Local: "x"}, MucPresence{})
 }

stanza/pubsub.go

@@ -2,39 +2,432 @@ package stanza
 
 import (
 	"encoding/xml"
+	"errors"
+	"strings"
 )
 
-type PubSub struct {
+type PubSubGeneric struct {
 	XMLName xml.Name `xml:"http://jabber.org/protocol/pubsub pubsub"`
-	Publish *Publish
-	Retract *Retract
-	// TODO <configure/>
+
+	Create    *Create    `xml:"create,omitempty"`
+	Configure *Configure `xml:"configure,omitempty"`
+
+	Subscribe  *SubInfo    `xml:"subscribe,omitempty"`
+	SubOptions *SubOptions `xml:"options,omitempty"`
+
+	Publish        *Publish        `xml:"publish,omitempty"`
+	PublishOptions *PublishOptions `xml:"publish-options"`
+
+	Affiliations *Affiliations `xml:"affiliations,omitempty"`
+	Default      *Default      `xml:"default,omitempty"`
+
+	Items        *Items        `xml:"items,omitempty"`
+	Retract      *Retract      `xml:"retract,omitempty"`
+	Subscription *Subscription `xml:"subscription,omitempty"`
+
+	Subscriptions *Subscriptions `xml:"subscriptions,omitempty"`
+	// To use in responses to sub/unsub for instance
+	// Subscription options
+	Unsubscribe *SubInfo `xml:"unsubscribe,omitempty"`
+
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
-func (p *PubSub) Namespace() string {
+func (p *PubSubGeneric) Namespace() string {
 	return p.XMLName.Space
 }
 
+func (p *PubSubGeneric) GetSet() *ResultSet {
+	return p.ResultSet
+}
+
+type Affiliations struct {
+	List []Affiliation `xml:"affiliation"`
+	Node string        `xml:"node,attr,omitempty"`
+}
+
+type Affiliation struct {
+	AffiliationStatus string `xml:"affiliation"`
+	Node              string `xml:"node,attr"`
+}
+
+type Create struct {
+	Node string `xml:"node,attr,omitempty"`
+}
+
+type SubOptions struct {
+	SubInfo
+	Form *Form `xml:"x"`
+}
+
+type Configure struct {
+	Form *Form `xml:"x"`
+}
+type Default struct {
+	Node string `xml:"node,attr,omitempty"`
+	Type string `xml:"type,attr,omitempty"`
+	Form *Form  `xml:"x"`
+}
+
+type Subscribe struct {
+	XMLName xml.Name `xml:"subscribe"`
+	SubInfo
+}
+type Unsubscribe struct {
+	XMLName xml.Name `xml:"unsubscribe"`
+	SubInfo
+}
+
+// SubInfo represents information about a subscription
+// Node is the node related to the subscription
+// Jid is the subscription JID of the subscribed entity
+// SubID is the subscription ID
+type SubInfo struct {
+	Node string `xml:"node,attr,omitempty"`
+	Jid  string `xml:"jid,attr,omitempty"`
+	// Sub ID is optional
+	SubId *string `xml:"subid,attr,omitempty"`
+}
+
+// validate checks if a node and a jid are present in the sub info, and if this jid is valid.
+func (si *SubInfo) validate() error {
+	// Requests MUST contain a valid JID
+	if _, err := NewJid(si.Jid); err != nil {
+		return err
+	}
+	// SubInfo must contain both a valid JID and a node. See XEP-0060
+	if strings.TrimSpace(si.Node) == "" {
+		return errors.New("SubInfo must contain the node AND the subscriber JID in subscription config options requests")
+	}
+	return nil
+}
+
+// Handles the "5.6 Retrieve Subscriptions" of XEP-0060
+type Subscriptions struct {
+	XMLName xml.Name       `xml:"subscriptions"`
+	List    []Subscription `xml:"subscription,omitempty"`
+}
+
+// Handles the "5.6 Retrieve Subscriptions" and the 6.1 Subscribe to a Node and so on of XEP-0060
+type Subscription struct {
+	SubStatus string `xml:"subscription,attr,omitempty"`
+	SubInfo   `xml:",omitempty"`
+	// Seems like we can't marshal a self-closing tag for now : https://github.com/golang/go/issues/21399
+	// subscribe-options should be like this as per XEP-0060:
+	//    <subscribe-options>
+	//        <required/>
+	//    </subscribe-options>
+	// Used to indicate if configuration options is required.
+	Required *struct{}
+}
+
+type PublishOptions struct {
+	XMLName xml.Name `xml:"publish-options"`
+	Form    *Form
+}
+
 type Publish struct {
 	XMLName xml.Name `xml:"publish"`
 	Node    string   `xml:"node,attr"`
-	Item    Item
+	Items   []Item   `xml:"item,omitempty"` // xsd says there can be many. See also 12.10 Batch Processing of XEP-0060
+}
+
+type Items struct {
+	List     []Item `xml:"item,omitempty"`
+	MaxItems int    `xml:"max_items,attr,omitempty"`
+	Node     string `xml:"node,attr"`
+	SubId    string `xml:"subid,attr,omitempty"`
 }
 
 type Item struct {
-	XMLName xml.Name `xml:"item"`
-	Id      string   `xml:"id,attr,omitempty"`
-	Tune    *Tune
-	Mood    *Mood
+	XMLName   xml.Name `xml:"item"`
+	Id        string   `xml:"id,attr,omitempty"`
+	Publisher string   `xml:"publisher,attr,omitempty"`
+	Any       *Node    `xml:",any"`
 }
 
 type Retract struct {
 	XMLName xml.Name `xml:"retract"`
 	Node    string   `xml:"node,attr"`
-	Notify  string   `xml:"notify,attr"`
-	Item    Item
+	Notify  *bool    `xml:"notify,attr,omitempty"`
+	Items   []Item   `xml:"item"`
+}
+
+type PubSubOption struct {
+	XMLName xml.Name `xml:"jabber:x:data options"`
+	Form    `xml:"x"`
+}
+
+// NewSubRq builds a subscription request to a node at the given service.
+// It's a Set type IQ.
+// Information about the subscription and the requester are separated. subInfo contains information about the subscription.
+// 6.1 Subscribe to a Node
+func NewSubRq(serviceId string, subInfo SubInfo) (*IQ, error) {
+	if e := subInfo.validate(); e != nil {
+		return nil, e
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Subscribe: &subInfo,
+	}
+	return iq, nil
+}
+
+// NewUnsubRq builds an unsub request to a node at the given service.
+// It's a Set type IQ
+// Information about the subscription and the requester are separated. subInfo contains information about the subscription.
+// 6.2 Unsubscribe from a Node
+func NewUnsubRq(serviceId string, subInfo SubInfo) (*IQ, error) {
+	if e := subInfo.validate(); e != nil {
+		return nil, e
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Unsubscribe: &subInfo,
+	}
+	return iq, nil
+}
+
+// NewSubOptsRq builds a request for the subscription options.
+// It's a Get type IQ
+// Information about the subscription and the requester are separated. subInfo contains information about the subscription.
+// 6.3 Configure Subscription Options
+func NewSubOptsRq(serviceId string, subInfo SubInfo) (*IQ, error) {
+	if e := subInfo.validate(); e != nil {
+		return nil, e
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		SubOptions: &SubOptions{
+			SubInfo: subInfo,
+		},
+	}
+	return iq, nil
+}
+
+// NewFormSubmission builds a form submission pubsub IQ
+// Information about the subscription and the requester are separated. subInfo contains information about the subscription.
+// 6.3.5 Form Submission
+func NewFormSubmission(serviceId string, subInfo SubInfo, form *Form) (*IQ, error) {
+	if e := subInfo.validate(); e != nil {
+		return nil, e
+	}
+	if form.Type != FormTypeSubmit {
+		return nil, errors.New("form type was expected to be submit but was : " + form.Type)
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		SubOptions: &SubOptions{
+			SubInfo: subInfo,
+			Form:    form,
+		},
+	}
+	return iq, nil
+}
+
+// NewSubAndConfig builds a subscribe request that contains configuration options for the service
+// From XEP-0060 : The <options/> element MUST follow the <subscribe/> element and
+// MUST NOT possess a 'node' attribute or 'jid' attribute,
+// since the value of the <subscribe/> element's 'node' attribute specifies the desired NodeID and
+// the value of the <subscribe/> element's 'jid' attribute specifies the subscriber's JID
+// 6.3.7 Subscribe and Configure
+func NewSubAndConfig(serviceId string, subInfo SubInfo, form *Form) (*IQ, error) {
+	if e := subInfo.validate(); e != nil {
+		return nil, e
+	}
+	if form.Type != FormTypeSubmit {
+		return nil, errors.New("form type was expected to be submit but was : " + form.Type)
+	}
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Subscribe: &subInfo,
+		SubOptions: &SubOptions{
+			SubInfo: SubInfo{SubId: subInfo.SubId},
+			Form:    form,
+		},
+	}
+	return iq, nil
+
+}
+
+// NewItemsRequest creates a request to query existing items from a node.
+// Specify a "maxItems" value to request only the last maxItems items. If 0, requests all items.
+// 6.5.2 Requesting All List AND 6.5.7 Requesting the Most Recent List
+func NewItemsRequest(serviceId string, node string, maxItems int) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Items: &Items{Node: node},
+	}
+
+	if maxItems != 0 {
+		ps, _ := iq.Payload.(*PubSubGeneric)
+		ps.Items.MaxItems = maxItems
+	}
+	return iq, nil
+}
+
+// NewItemsRequest creates a request to get a specific item from a node.
+// 6.5.8 Requesting a Particular Item
+func NewSpecificItemRequest(serviceId, node, itemId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Items: &Items{Node: node,
+			List: []Item{
+				{
+					Id: itemId,
+				},
+			},
+		},
+	}
+	return iq, nil
+}
+
+// NewPublishItemRq creates a request to publish a single item to a node identified by its provided ID
+func NewPublishItemRq(serviceId, nodeID, pubItemID string, item Item) (*IQ, error) {
+	// "The <publish/> element MUST possess a 'node' attribute, specifying the NodeID of the node."
+	if strings.TrimSpace(nodeID) == "" {
+		return nil, errors.New("cannot publish without a target node ID")
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Publish: &Publish{Node: nodeID, Items: []Item{item}},
+	}
+
+	// "The <item/> element provided by the publisher MAY possess an 'id' attribute,
+	// specifying a unique ItemID for the item.
+	// If an ItemID is not provided in the publish request,
+	// the pubsub service MUST generate one and MUST ensure that it is unique for that node."
+	if strings.TrimSpace(pubItemID) != "" {
+		ps, _ := iq.Payload.(*PubSubGeneric)
+		ps.Publish.Items[0].Id = pubItemID
+	}
+	return iq, nil
+}
+
+// NewPublishItemOptsRq creates a request to publish items to a node identified by its provided ID, along with configuration options
+// A pubsub service MAY support the ability to specify options along with a publish request
+//(if so, it MUST advertise support for the "http://jabber.org/protocol/pubsub#publish-options" feature).
+func NewPublishItemOptsRq(serviceId, nodeID string, items []Item, options *PublishOptions) (*IQ, error) {
+	// "The <publish/> element MUST possess a 'node' attribute, specifying the NodeID of the node."
+	if strings.TrimSpace(nodeID) == "" {
+		return nil, errors.New("cannot publish without a target node ID")
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Publish:        &Publish{Node: nodeID, Items: items},
+		PublishOptions: options,
+	}
+
+	return iq, nil
+}
+
+// NewDelItemFromNode creates a request to delete and item from a node, given its id.
+// To delete an item, the publisher sends a retract request.
+// This helper function follows 7.2 Delete an Item from a Node
+func NewDelItemFromNode(serviceId, nodeID, itemId string, notify *bool) (*IQ, error) {
+	// "The <retract/> element MUST possess a 'node' attribute, specifying the NodeID of the node."
+	if strings.TrimSpace(nodeID) == "" {
+		return nil, errors.New("cannot delete item without a target node ID")
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Retract: &Retract{Node: nodeID, Items: []Item{{Id: itemId}}, Notify: notify},
+	}
+	return iq, nil
+}
+
+// NewCreateAndConfigNode makes a request for node creation that has the desired node configuration.
+// See 8.1.3 Create and Configure a Node
+func NewCreateAndConfigNode(serviceId, nodeID string, confForm *Form) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Create:    &Create{Node: nodeID},
+		Configure: &Configure{Form: confForm},
+	}
+	return iq, nil
+}
+
+// NewCreateNode builds a request to create a node on the service referenced by "serviceId"
+// See 8.1 Create a Node
+func NewCreateNode(serviceId, nodeName string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Create: &Create{Node: nodeName},
+	}
+	return iq, nil
+}
+
+// NewRetrieveAllSubsRequest builds a request to retrieve all subscriptions from all nodes
+// In order to make the request, the requesting entity MUST send an IQ-get whose <pubsub/>
+// child contains an empty <subscriptions/> element with no attributes.
+func NewRetrieveAllSubsRequest(serviceId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Subscriptions: &Subscriptions{},
+	}
+	return iq, nil
+}
+
+// NewRetrieveAllAffilsRequest builds a request to retrieve all affiliations from all nodes
+// In order to make the request of the service, the requesting entity includes an empty <affiliations/> element with no attributes.
+func NewRetrieveAllAffilsRequest(serviceId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubGeneric{
+		Affiliations: &Affiliations{},
+	}
+	return iq, nil
 }
 
 func init() {
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"http://jabber.org/protocol/pubsub", "pubsub"}, PubSub{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "http://jabber.org/protocol/pubsub", Local: "pubsub"}, PubSubGeneric{})
 }

stanza/pubsub_owner.go

@@ -0,0 +1,458 @@
+package stanza
+
+import (
+	"encoding/xml"
+	"errors"
+	"strings"
+)
+
+type PubSubOwner struct {
+	XMLName      xml.Name `xml:"http://jabber.org/protocol/pubsub#owner pubsub"`
+	OwnerUseCase OwnerUseCase
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
+}
+
+func (pso *PubSubOwner) Namespace() string {
+	return pso.XMLName.Space
+}
+
+func (pso *PubSubOwner) GetSet() *ResultSet {
+	return pso.ResultSet
+}
+
+type OwnerUseCase interface {
+	UseCase() string
+}
+
+type AffiliationsOwner struct {
+	XMLName      xml.Name           `xml:"affiliations"`
+	Affiliations []AffiliationOwner `xml:"affiliation,omitempty"`
+	Node         string             `xml:"node,attr"`
+}
+
+func (AffiliationsOwner) UseCase() string {
+	return "affiliations"
+}
+
+type AffiliationOwner struct {
+	XMLName           xml.Name `xml:"affiliation"`
+	AffiliationStatus string   `xml:"affiliation,attr"`
+	Jid               string   `xml:"jid,attr"`
+}
+
+const (
+	AffiliationStatusMember      = "member"
+	AffiliationStatusNone        = "none"
+	AffiliationStatusOutcast     = "outcast"
+	AffiliationStatusOwner       = "owner"
+	AffiliationStatusPublisher   = "publisher"
+	AffiliationStatusPublishOnly = "publish-only"
+)
+
+type ConfigureOwner struct {
+	XMLName xml.Name `xml:"configure"`
+	Node    string   `xml:"node,attr,omitempty"`
+	Form    *Form    `xml:"x,omitempty"`
+}
+
+func (*ConfigureOwner) UseCase() string {
+	return "configure"
+}
+
+type DefaultOwner struct {
+	XMLName xml.Name `xml:"default"`
+	Form    *Form    `xml:"x,omitempty"`
+}
+
+func (*DefaultOwner) UseCase() string {
+	return "default"
+}
+
+type DeleteOwner struct {
+	XMLName       xml.Name       `xml:"delete"`
+	RedirectOwner *RedirectOwner `xml:"redirect,omitempty"`
+	Node          string         `xml:"node,attr,omitempty"`
+}
+
+func (*DeleteOwner) UseCase() string {
+	return "delete"
+}
+
+type RedirectOwner struct {
+	XMLName xml.Name `xml:"redirect"`
+	URI     string   `xml:"uri,attr"`
+}
+
+type PurgeOwner struct {
+	XMLName xml.Name `xml:"purge"`
+	Node    string   `xml:"node,attr"`
+}
+
+func (*PurgeOwner) UseCase() string {
+	return "purge"
+}
+
+type SubscriptionsOwner struct {
+	XMLName       xml.Name            `xml:"subscriptions"`
+	Subscriptions []SubscriptionOwner `xml:"subscription"`
+	Node          string              `xml:"node,attr"`
+}
+
+func (*SubscriptionsOwner) UseCase() string {
+	return "subscriptions"
+}
+
+type SubscriptionOwner struct {
+	SubscriptionStatus string `xml:"subscription"`
+	Jid                string `xml:"jid,attr"`
+}
+
+const (
+	SubscriptionStatusNone         = "none"
+	SubscriptionStatusPending      = "pending"
+	SubscriptionStatusSubscribed   = "subscribed"
+	SubscriptionStatusUnconfigured = "unconfigured"
+)
+
+// NewConfigureNode creates a request to configure a node on the given service.
+// A form will be returned by the service, to which the user must respond using for instance the NewFormSubmission function.
+// See 8.2 Configure a Node
+func NewConfigureNode(serviceId, nodeName string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &ConfigureOwner{Node: nodeName},
+	}
+	return iq, nil
+}
+
+// NewDelNode creates a request to delete node "nodeID" from the "serviceId" service
+// See 8.4 Delete a Node
+func NewDelNode(serviceId, nodeID string) (*IQ, error) {
+	if strings.TrimSpace(nodeID) == "" {
+		return nil, errors.New("cannot delete a node without a target node ID")
+	}
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &DeleteOwner{Node: nodeID},
+	}
+	return iq, nil
+}
+
+// NewPurgeAllItems creates a new purge request for the "nodeId" node, at "serviceId" service
+// See 8.5 Purge All Node Items
+func NewPurgeAllItems(serviceId, nodeId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &PurgeOwner{Node: nodeId},
+	}
+	return iq, nil
+}
+
+// NewRequestDefaultConfig build a request to ask the service for the default config of its nodes
+// See 8.3 Request Default Node Configuration Options
+func NewRequestDefaultConfig(serviceId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &DefaultOwner{},
+	}
+	return iq, nil
+}
+
+// NewApproveSubRequest creates a new sub approval response to a request from the service to the owner of the node
+// In order to approve the request, the owner shall submit the form and set the "pubsub#allow" field to a value of "1" or "true"
+// For tracking purposes the message MUST reflect the 'id' attribute originally provided in the request.
+// See 8.6 Manage Subscription Requests
+func NewApproveSubRequest(serviceId, reqID string, apprForm *Form) (Message, error) {
+	if serviceId == "" {
+		return Message{}, errors.New("need a target service serviceId send approval serviceId")
+	}
+	if reqID == "" {
+		return Message{}, errors.New("the request ID is empty but must be used for the approval")
+	}
+	if apprForm == nil {
+		return Message{}, errors.New("approval form is nil")
+	}
+	apprMess := NewMessage(Attrs{To: serviceId})
+	apprMess.Extensions = []MsgExtension{apprForm}
+	apprMess.Id = reqID
+
+	return apprMess, nil
+}
+
+// NewGetPendingSubRequests creates a new request for all pending subscriptions to all their nodes at a service
+// This feature MUST be implemented using the Ad-Hoc Commands (XEP-0050) protocol
+// 8.7 Process Pending Subscription Requests
+func NewGetPendingSubRequests(serviceId string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &Command{
+		//  the command name ('node' attribute of the command element) MUST have a value of "http://jabber.org/protocol/pubsub#get-pending"
+		Node:   "http://jabber.org/protocol/pubsub#get-pending",
+		Action: CommandActionExecute,
+	}
+	return iq, nil
+}
+
+// NewGetPendingSubRequests creates a new request for all pending subscriptions to be approved on a given node
+// Upon receiving the data form for managing subscription requests, the owner then MAY request pending subscription
+// approval requests for a given node.
+// See 8.7.4 Per-Node Request
+func NewApprovePendingSubRequest(serviceId, sessionId, nodeId string) (*IQ, error) {
+	if sessionId == "" {
+		return nil, errors.New("the sessionId must be maintained for the command")
+	}
+
+	form := &Form{
+		Type:   FormTypeSubmit,
+		Fields: []*Field{{Var: "pubsub#node", ValuesList: []string{nodeId}}},
+	}
+	data, err := xml.Marshal(form)
+	if err != nil {
+		return nil, err
+	}
+	var n Node
+	err = xml.Unmarshal(data, &n)
+	if err != nil {
+		return nil, err
+	}
+
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &Command{
+		//  the command name ('node' attribute of the command element) MUST have a value of "http://jabber.org/protocol/pubsub#get-pending"
+		Node:            "http://jabber.org/protocol/pubsub#get-pending",
+		Action:          CommandActionExecute,
+		SessionId:       sessionId,
+		CommandElements: []CommandElement{&n},
+	}
+	return iq, nil
+}
+
+// NewSubListRequest creates a request to list subscriptions of the client, for all nodes at the service.
+// It's a Get type IQ
+// 8.8.1 Retrieve Subscriptions
+func NewSubListRqPl(serviceId, nodeID string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &SubscriptionsOwner{Node: nodeID},
+	}
+	return iq, nil
+}
+
+func NewSubsForEntitiesRequest(serviceId, nodeID string, subs []SubscriptionOwner) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &SubscriptionsOwner{Node: nodeID, Subscriptions: subs},
+	}
+	return iq, nil
+}
+
+// NewModifAffiliationRequest creates a request to either modify one or more affiliations, or delete one or more affiliations
+// 8.9.2 Modify Affiliation & 8.9.2.4 Multiple Simultaneous Modifications & 8.9.3 Delete an Entity (just set the status to "none")
+func NewModifAffiliationRequest(serviceId, nodeID string, newAffils []AffiliationOwner) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &AffiliationsOwner{
+			Node:         nodeID,
+			Affiliations: newAffils,
+		},
+	}
+	return iq, nil
+}
+
+// NewAffiliationListRequest creates a request to list all affiliated entities
+// See 8.9.1 Retrieve List List
+func NewAffiliationListRequest(serviceId, nodeID string) (*IQ, error) {
+	iq, err := NewIQ(Attrs{Type: IQTypeGet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	iq.Payload = &PubSubOwner{
+		OwnerUseCase: &AffiliationsOwner{
+			Node: nodeID,
+		},
+	}
+	return iq, nil
+}
+
+// NewFormSubmission builds a form submission pubsub IQ, in the Owner namespace
+// This is typically used to respond to a form issued by the server when configuring a node.
+// See 8.2.4 Form Submission
+func NewFormSubmissionOwner(serviceId, nodeName string, fields []*Field) (*IQ, error) {
+	if serviceId == "" || nodeName == "" {
+		return nil, errors.New("serviceId and nodeName must be filled for this request to be valid")
+	}
+
+	submitConf, err := NewIQ(Attrs{Type: IQTypeSet, To: serviceId})
+	if err != nil {
+		return nil, err
+	}
+	submitConf.Payload = &PubSubOwner{
+		OwnerUseCase: &ConfigureOwner{
+			Node: nodeName,
+			Form: NewForm(fields,
+				FormTypeSubmit)},
+	}
+
+	return submitConf, nil
+}
+
+// GetFormFields gets the fields from a form in a IQ stanza of type result, as a map.
+// Key is the "var" attribute of the field, and field is the value.
+// The user can then select and modify the fields they want to alter, and submit a new form to the service using the
+// NewFormSubmission function to build the IQ.
+// TODO : remove restriction on IQ type ?
+func (iq *IQ) GetFormFields() (map[string]*Field, error) {
+	if iq.Type != IQTypeResult {
+		return nil, errors.New("this IQ is not a result type IQ. Cannot extract the form from it")
+	}
+	switch payload := iq.Payload.(type) {
+	// We support IOT Control IQ
+	case *PubSubGeneric:
+		fieldMap := make(map[string]*Field)
+		for _, elt := range payload.Configure.Form.Fields {
+			fieldMap[elt.Var] = elt
+		}
+		return fieldMap, nil
+	case *PubSubOwner:
+		fieldMap := make(map[string]*Field)
+		co, ok := payload.OwnerUseCase.(*ConfigureOwner)
+		if !ok {
+			return nil, errors.New("this IQ does not contain a PubSub payload with a configure tag for the owner namespace")
+		}
+		for _, elt := range co.Form.Fields {
+			fieldMap[elt.Var] = elt
+		}
+		return fieldMap, nil
+
+	case *Command:
+		fieldMap := make(map[string]*Field)
+		var form *Form
+		for _, ce := range payload.CommandElements {
+			fo, ok := ce.(*Form)
+			if ok {
+				form = fo
+				break
+			}
+		}
+		if form == nil {
+			return nil, errors.New("this IQ does not contain a command payload with a form")
+		}
+		for _, elt := range form.Fields {
+			fieldMap[elt.Var] = elt
+		}
+		return fieldMap, nil
+	default:
+		if iq.Any != nil {
+			fieldMap := make(map[string]*Field)
+			if iq.Any.XMLName.Local != "command" {
+				return nil, errors.New("this IQ does not contain a form")
+			}
+
+			for _, nde := range iq.Any.Nodes {
+				if nde.XMLName.Local == "x" {
+					for _, n := range nde.Nodes {
+						if n.XMLName.Local == "field" {
+							f := Field{}
+							data, err := xml.Marshal(n)
+							if err != nil {
+								continue
+							}
+							err = xml.Unmarshal(data, &f)
+							if err == nil {
+								fieldMap[f.Var] = &f
+							}
+						}
+					}
+				}
+			}
+			return fieldMap, nil
+		}
+		return nil, errors.New("this IQ does not contain a form")
+	}
+}
+
+func (pso *PubSubOwner) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	pso.XMLName = start.Name
+	// decode inner elements
+	for {
+		t, err := d.Token()
+		if err != nil {
+			return err
+		}
+
+		switch tt := t.(type) {
+
+		case xml.StartElement:
+			// Decode sub-elements
+			var err error
+			switch tt.Name.Local {
+
+			case "affiliations":
+				aff := AffiliationsOwner{}
+				err = d.DecodeElement(&aff, &tt)
+				pso.OwnerUseCase = &aff
+			case "configure":
+				co := ConfigureOwner{}
+				err = d.DecodeElement(&co, &tt)
+				pso.OwnerUseCase = &co
+			case "default":
+				def := DefaultOwner{}
+				err = d.DecodeElement(&def, &tt)
+				pso.OwnerUseCase = &def
+			case "delete":
+				del := DeleteOwner{}
+				err = d.DecodeElement(&del, &tt)
+				pso.OwnerUseCase = &del
+			case "purge":
+				pu := PurgeOwner{}
+				err = d.DecodeElement(&pu, &tt)
+				pso.OwnerUseCase = &pu
+			case "subscriptions":
+				subs := SubscriptionsOwner{}
+				err = d.DecodeElement(&subs, &tt)
+				pso.OwnerUseCase = &subs
+				if err != nil {
+					return err
+				}
+			}
+			if err != nil {
+				return err
+			}
+		case xml.EndElement:
+			if tt == start.End() {
+				return nil
+			}
+		}
+	}
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "http://jabber.org/protocol/pubsub#owner", Local: "pubsub"}, PubSubOwner{})
+}

stanza/pubsub_owner_test.go

@@ -0,0 +1,885 @@
+package stanza_test
+
+import (
+	"encoding/xml"
+	"errors"
+	"gosrc.io/xmpp/stanza"
+	"testing"
+)
+
+// ******************************
+// * 8.2 Configure a Node
+// ******************************
+func TestNewConfigureNode(t *testing.T) {
+	expectedReq := "<iq type=\"get\" id=\"config1\" to=\"pubsub.shakespeare.lit\" > " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> <configure node=\"princely_musings\"></configure> " +
+		"</pubsub> </iq>"
+
+	subR, err := stanza.NewConfigureNode("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a configure node request: %v", err)
+	}
+	subR.Id = "config1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	ownrUsecase, ok := pubsub.OwnerUseCase.(*stanza.ConfigureOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a configure tag")
+	}
+
+	if ownrUsecase.Node == "" {
+		t.Fatalf("could not parse node from config tag")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewConfigureNodeResp(t *testing.T) {
+	response := `
+	<iq from="pubsub.shakespeare.lit" id="config1" to="hamlet@denmark.lit/elsinore" type="result">
+  <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+    <configure node="princely_musings">
+      <x type="form" xmlns="jabber:x:data">
+        <field type="hidden" var="FORM_TYPE">
+          <value>http://jabber.org/protocol/pubsub#node_config</value>
+        </field>
+        <field label="Purge all items when the relevant publisher goes offline?" type="boolean" var="pubsub#purge_offline">
+          <value>0</value>
+        </field>
+        <field label="Max Payload size in bytes" type="text-single" var="pubsub#max_payload_size">
+          <value>1028</value>
+        </field>
+        <field label="When to send the last published item" type="list-single" var="pubsub#send_last_published_item">
+          <option label="Never">
+            <value>never</value>
+          </option>
+          <option label="When a new subscription is processed">
+            <value>on_sub</value>
+          </option>
+          <option label="When a new subscription is processed and whenever a subscriber comes online">
+            <value>on_sub_and_presence</value>
+          </option>
+          <value>never</value>
+        </field>
+        <field label="Deliver event notifications only to available users" type="boolean" var="pubsub#presence_based_delivery">
+          <value>0</value>
+        </field>
+        <field label="Specify the delivery style for event notifications" type="list-single" var="pubsub#notification_type">
+          <option>
+            <value>normal</value>
+          </option>
+          <option>
+            <value>headline</value>
+          </option>
+          <value>headline</value>
+        </field>
+        <field label="Specify the type of payload data to be provided at this node" type="text-single" var="pubsub#type">
+          <value>http://www.w3.org/2005/Atom</value>
+        </field>
+        <field label="Payload XSLT" type="text-single" var="pubsub#dataform_xslt"/>
+      </x>
+    </configure>
+  </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubOwnerPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	ownrUsecase, ok := pubsub.OwnerUseCase.(*stanza.ConfigureOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a configure tag")
+	}
+
+	if ownrUsecase.Form == nil {
+		t.Fatalf("form is nil in the parsed config tag")
+	}
+
+	if len(ownrUsecase.Form.Fields) != 8 {
+		t.Fatalf("one or more fields in the response form could not be parsed correctly")
+	}
+}
+
+// *************************************************
+// * 8.3 Request Default Node Configuration Options
+// *************************************************
+
+func TestNewRequestDefaultConfig(t *testing.T) {
+	expectedReq := "<iq type=\"get\" id=\"def1\" to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> <default></default> </pubsub> </iq>"
+
+	subR, err := stanza.NewRequestDefaultConfig("pubsub.shakespeare.lit")
+	if err != nil {
+		t.Fatalf("failed to create a default config request: %v", err)
+	}
+	subR.Id = "def1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	_, ok = pubsub.OwnerUseCase.(*stanza.DefaultOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a default tag")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewRequestDefaultConfigResp(t *testing.T) {
+	response := `
+	<iq from="pubsub.shakespeare.lit" id="config1" to="hamlet@denmark.lit/elsinore" type="result">
+ <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+   <configure node="princely_musings">
+     <x type="form" xmlns="jabber:x:data">
+       <field type="hidden" var="FORM_TYPE">
+         <value>http://jabber.org/protocol/pubsub#node_config</value>
+       </field>
+       <field label="Purge all items when the relevant publisher goes offline?" type="boolean" var="pubsub#purge_offline">
+         <value>0</value>
+       </field>
+       <field label="Max Payload size in bytes" type="text-single" var="pubsub#max_payload_size">
+         <value>1028</value>
+       </field>
+       <field label="When to send the last published item" type="list-single" var="pubsub#send_last_published_item">
+         <option label="Never">
+           <value>never</value>
+         </option>
+         <option label="When a new subscription is processed">
+           <value>on_sub</value>
+         </option>
+         <option label="When a new subscription is processed and whenever a subscriber comes online">
+           <value>on_sub_and_presence</value>
+         </option>
+         <value>never</value>
+       </field>
+       <field label="Deliver event notifications only to available users" type="boolean" var="pubsub#presence_based_delivery">
+         <value>0</value>
+       </field>
+       <field label="Specify the delivery style for event notifications" type="list-single" var="pubsub#notification_type">
+         <option>
+           <value>normal</value>
+         </option>
+         <option>
+           <value>headline</value>
+         </option>
+         <value>headline</value>
+       </field>
+       <field label="Specify the type of payload data to be provided at this node" type="text-single" var="pubsub#type">
+         <value>http://www.w3.org/2005/Atom</value>
+       </field>
+       <field label="Payload XSLT" type="text-single" var="pubsub#dataform_xslt"/>
+     </x>
+   </configure>
+ </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubOwnerPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	ownrUsecase, ok := pubsub.OwnerUseCase.(*stanza.ConfigureOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a configure tag")
+	}
+
+	if ownrUsecase.Form == nil {
+		t.Fatalf("form is nil in the parsed config tag")
+	}
+
+	if len(ownrUsecase.Form.Fields) != 8 {
+		t.Fatalf("one or more fields in the response form could not be parsed correctly")
+	}
+}
+
+// ***********************
+// * 8.4 Delete a Node
+// ***********************
+
+func TestNewDelNode(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"delete1\" to=\"pubsub.shakespeare.lit\" >" +
+		" <pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> " +
+		"<delete node=\"princely_musings\"></delete> </pubsub> </iq>"
+
+	subR, err := stanza.NewDelNode("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a node delete request: %v", err)
+	}
+	subR.Id = "delete1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	_, ok = pubsub.OwnerUseCase.(*stanza.DeleteOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a delete tag")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewDelNodeResp(t *testing.T) {
+	response := `
+	<iq id="delete1" to="pubsub.shakespeare.lit" type="set">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+        <delete node="princely_musings">
+            <redirect uri="xmpp:hamlet@denmark.lit"/>
+        </delete>
+    </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubOwnerPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	ownrUsecase, ok := pubsub.OwnerUseCase.(*stanza.DeleteOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a configure tag")
+	}
+
+	if ownrUsecase.RedirectOwner == nil {
+		t.Fatalf("redirect is nil in the delete tag")
+	}
+
+	if ownrUsecase.RedirectOwner.URI == "" {
+		t.Fatalf("could not parse redirect uri")
+	}
+}
+
+// ****************************
+// * 8.5 Purge All Node Items
+// ****************************
+
+func TestNewPurgeAllItems(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"purge1\" to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> " +
+		"<purge node=\"princely_musings\"></purge> </pubsub> </iq>"
+
+	subR, err := stanza.NewPurgeAllItems("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a purge all items request: %v", err)
+	}
+	subR.Id = "purge1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+
+	if pubsub.OwnerUseCase == nil {
+		t.Fatalf("owner use case is nil")
+	}
+
+	purge, ok := pubsub.OwnerUseCase.(*stanza.PurgeOwner)
+	if !ok {
+		t.Fatalf("owner use case is not a delete tag")
+	}
+
+	if purge.Node == "" {
+		t.Fatalf("could not parse purge targer node")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ************************************
+// * 8.6 Manage Subscription Requests
+// ************************************
+func TestNewApproveSubRequest(t *testing.T) {
+	expectedReq := "<message id=\"approve1\" to=\"pubsub.shakespeare.lit\"> " +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\"> <field var=\"FORM_TYPE\" type=\"hidden\"> " +
+		"<value>http://jabber.org/protocol/pubsub#subscribe_authorization</value> </field> <field var=\"pubsub#subid\">" +
+		" <value>123-abc</value> </field> <field var=\"pubsub#node\"> <value>princely_musings</value> </field> " +
+		"<field var=\"pubsub#subscriber_jid\"> <value>horatio@denmark.lit</value> </field> <field var=\"pubsub#allow\"> " +
+		"<value>true</value> </field> </x> </message>"
+
+	apprForm := &stanza.Form{
+		Type: stanza.FormTypeSubmit,
+		Fields: []*stanza.Field{
+			{Var: "FORM_TYPE", Type: stanza.FieldTypeHidden, ValuesList: []string{"http://jabber.org/protocol/pubsub#subscribe_authorization"}},
+			{Var: "pubsub#subid", ValuesList: []string{"123-abc"}},
+			{Var: "pubsub#node", ValuesList: []string{"princely_musings"}},
+			{Var: "pubsub#subscriber_jid", ValuesList: []string{"horatio@denmark.lit"}},
+			{Var: "pubsub#allow", ValuesList: []string{"true"}},
+		},
+	}
+
+	subR, err := stanza.NewApproveSubRequest("pubsub.shakespeare.lit", "approve1", apprForm)
+	if err != nil {
+		t.Fatalf("failed to create a sub approval request: %v", err)
+	}
+	subR.Id = "approve1"
+
+	frm, ok := subR.Extensions[0].(*stanza.Form)
+	if !ok {
+		t.Fatalf("extension is not a from !")
+	}
+
+	var allowField *stanza.Field
+
+	for _, f := range frm.Fields {
+		if f.Var == "pubsub#allow" {
+			allowField = f
+		}
+	}
+	if allowField == nil || allowField.ValuesList[0] != "true" {
+		t.Fatalf("could not correctly parse the allow field in the response from")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ********************************************
+// * 8.7 Process Pending Subscription Requests
+// ********************************************
+
+func TestNewGetPendingSubRequests(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"pending1\" to=\"pubsub.shakespeare.lit\" > " +
+		"<command xmlns=\"http://jabber.org/protocol/commands\"  action=\"execute\" node=\"http://jabber.org/protocol/pubsub#get-pending\" >" +
+		"</command> </iq>"
+
+	subR, err := stanza.NewGetPendingSubRequests("pubsub.shakespeare.lit")
+	if err != nil {
+		t.Fatalf("failed to create a get pending subs request: %v", err)
+	}
+	subR.Id = "pending1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	command, ok := subR.Payload.(*stanza.Command)
+	if !ok {
+		t.Fatalf("payload is not a command !")
+	}
+
+	if command.Action != stanza.CommandActionExecute {
+		t.Fatalf("command should be execute !")
+	}
+
+	if command.Node != "http://jabber.org/protocol/pubsub#get-pending" {
+		t.Fatalf("command node should be http://jabber.org/protocol/pubsub#get-pending !")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewGetPendingSubRequestsResp(t *testing.T) {
+	response := `
+	<iq from="pubsub.shakespeare.lit" id="pending1" to="hamlet@denmark.lit/elsinore" type="result">
+  <command action="execute" node="http://jabber.org/protocol/pubsub#get-pending" sessionid="pubsub-get-pending:20031021T150901Z-600" status="executing" xmlns="http://jabber.org/protocol/commands">
+    <x type="form" xmlns="jabber:x:data">
+      <field type="hidden" var="FORM_TYPE">
+        <value>http://jabber.org/protocol/pubsub#subscribe_authorization</value>
+      </field>
+      <field type="list-single" var="pubsub#node">
+        <option>
+          <value>princely_musings</value>
+        </option>
+        <option>
+          <value>news_from_elsinore</value>
+        </option>
+      </field>
+    </x>
+  </command>
+</iq>
+`
+
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+	if err != nil {
+		t.Fatalf("could not parse iq")
+	}
+
+	_, ok := respIQ.Payload.(*stanza.Command)
+	if !ok {
+		t.Fatal("this iq payload is not a command")
+	}
+
+	fMap, err := respIQ.GetFormFields()
+	if err != nil || len(fMap) != 2 {
+		t.Fatal("could not parse command form fields")
+	}
+
+}
+
+// ********************************************
+// * 8.7 Process Pending Subscription Requests
+// ********************************************
+
+func TestNewApprovePendingSubRequest(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"pending2\" to=\"pubsub.shakespeare.lit\"> " +
+		"<command xmlns=\"http://jabber.org/protocol/commands\" action=\"execute\"" +
+		"node=\"http://jabber.org/protocol/pubsub#get-pending\"sessionid=\"pubsub-get-pending:20031021T150901Z-600\"> " +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\"> <field xmlns=\"jabber:x:data\" var=\"pubsub#node\"> " +
+		"<value xmlns=\"jabber:x:data\">princely_musings</value> </field> </x> </command> </iq>"
+
+	subR, err := stanza.NewApprovePendingSubRequest("pubsub.shakespeare.lit",
+		"pubsub-get-pending:20031021T150901Z-600",
+		"princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a approve pending sub request: %v", err)
+	}
+	subR.Id = "pending2"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	command, ok := subR.Payload.(*stanza.Command)
+	if !ok {
+		t.Fatalf("payload is not a command !")
+	}
+
+	if command.Action != stanza.CommandActionExecute {
+		t.Fatalf("command should be execute !")
+	}
+
+	//if command.Node != "http://jabber.org/protocol/pubsub#get-pending"{
+	//	t.Fatalf("command node should be http://jabber.org/protocol/pubsub#get-pending !")
+	//}
+	//
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ********************************************
+// * 8.8.1 Retrieve Subscriptions List
+// ********************************************
+
+func TestNewSubListRqPl(t *testing.T) {
+	expectedReq := "<iq type=\"get\" id=\"subman1\" to=\"pubsub.shakespeare.lit\" > " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> " +
+		"<subscriptions node=\"princely_musings\"></subscriptions> </pubsub> </iq>"
+
+	subR, err := stanza.NewSubListRqPl("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a sub list request: %v", err)
+	}
+	subR.Id = "subman1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub in namespace owner !")
+	}
+
+	subs, ok := pubsub.OwnerUseCase.(*stanza.SubscriptionsOwner)
+	if !ok {
+		t.Fatalf("pubsub doesn not contain a subscriptions node !")
+	}
+
+	if subs.Node != "princely_musings" {
+		t.Fatalf("subs node attribute should be princely_musings. Found %s", subs.Node)
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewSubListRqPlResp(t *testing.T) {
+	response := `
+<iq from="pubsub.shakespeare.lit" id="subman1" to="hamlet@denmark.lit/elsinore" type="result">
+  <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+    <subscriptions node="princely_musings">
+      <subscription jid="hamlet@denmark.lit" subscription="subscribed"></subscription>
+      <subscription jid="polonius@denmark.lit" subscription="unconfigured"></subscription>
+      <subscription jid="bernardo@denmark.lit" subid="123-abc" subscription="subscribed"></subscription>
+      <subscription jid="bernardo@denmark.lit" subid="004-yyy" subscription="subscribed"></subscription>
+    </subscriptions>
+  </pubsub>
+</iq>
+`
+
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+	if err != nil {
+		t.Fatalf("could not parse iq")
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatal("this iq payload is not a command")
+	}
+
+	subs, ok := pubsub.OwnerUseCase.(*stanza.SubscriptionsOwner)
+	if !ok {
+		t.Fatalf("pubsub doesn not contain a subscriptions node !")
+	}
+
+	if len(subs.Subscriptions) != 4 {
+		t.Fatalf("expected to find 4 subscriptions but got %d", len(subs.Subscriptions))
+	}
+
+}
+
+// ********************************************
+// * 8.9.1 Retrieve Affiliations List
+// ********************************************
+
+func TestNewAffiliationListRequest(t *testing.T) {
+	expectedReq := "<iq type=\"get\" id=\"ent1\" to=\"pubsub.shakespeare.lit\" > " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> " +
+		"<affiliations node=\"princely_musings\"></affiliations> </pubsub> </iq>"
+
+	subR, err := stanza.NewAffiliationListRequest("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create an affiliations list request: %v", err)
+	}
+	subR.Id = "ent1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub in namespace owner !")
+	}
+
+	affils, ok := pubsub.OwnerUseCase.(*stanza.AffiliationsOwner)
+	if !ok {
+		t.Fatalf("pubsub doesn not contain an affiliations node !")
+	}
+
+	if affils.Node != "princely_musings" {
+		t.Fatalf("affils node attribute should be princely_musings. Found %s", affils.Node)
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewAffiliationListRequestResp(t *testing.T) {
+	response := `
+<iq from="pubsub.shakespeare.lit" id="ent1" to="hamlet@denmark.lit/elsinore" type="result">
+  <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+    <affiliations node="princely_musings">
+      <affiliation affiliation="owner" jid="hamlet@denmark.lit"/>
+      <affiliation affiliation="outcast" jid="polonius@denmark.lit"/>
+    </affiliations>
+  </pubsub>
+</iq>
+`
+
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+	if err != nil {
+		t.Fatalf("could not parse iq")
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatal("this iq payload is not a command")
+	}
+
+	affils, ok := pubsub.OwnerUseCase.(*stanza.AffiliationsOwner)
+	if !ok {
+		t.Fatalf("pubsub doesn not contain an affiliations node !")
+	}
+
+	if len(affils.Affiliations) != 2 {
+		t.Fatalf("expected to find 2 subscriptions but got %d", len(affils.Affiliations))
+	}
+
+}
+
+// ********************************************
+// * 8.9.2 Modify Affiliation
+// ********************************************
+
+func TestNewModifAffiliationRequest(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"ent3\" to=\"pubsub.shakespeare.lit\" > " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> <affiliations node=\"princely_musings\"> " +
+		"<affiliation affiliation=\"none\" jid=\"hamlet@denmark.lit\"></affiliation> " +
+		"<affiliation affiliation=\"none\" jid=\"polonius@denmark.lit\"></affiliation> " +
+		"<affiliation affiliation=\"publisher\" jid=\"bard@shakespeare.lit\"></affiliation> </affiliations> </pubsub> " +
+		"</iq>"
+
+	affils := []stanza.AffiliationOwner{
+		{
+			AffiliationStatus: stanza.AffiliationStatusNone,
+			Jid:               "hamlet@denmark.lit",
+		},
+		{
+			AffiliationStatus: stanza.AffiliationStatusNone,
+			Jid:               "polonius@denmark.lit",
+		},
+		{
+			AffiliationStatus: stanza.AffiliationStatusPublisher,
+			Jid:               "bard@shakespeare.lit",
+		},
+	}
+
+	subR, err := stanza.NewModifAffiliationRequest("pubsub.shakespeare.lit", "princely_musings", affils)
+	if err != nil {
+		t.Fatalf("failed to create a modif affiliation request: %v", err)
+	}
+	subR.Id = "ent3"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub in namespace owner !")
+	}
+
+	as, ok := pubsub.OwnerUseCase.(*stanza.AffiliationsOwner)
+	if !ok {
+		t.Fatalf("pubsub doesn not contain an affiliations node !")
+	}
+
+	if as.Node != "princely_musings" {
+		t.Fatalf("affils node attribute should be princely_musings. Found %s", as.Node)
+	}
+	if len(as.Affiliations) != 3 {
+		t.Fatalf("expected 3 affiliations, found %d", len(as.Affiliations))
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestGetFormFields(t *testing.T) {
+	response := `
+	<iq from="pubsub.shakespeare.lit" id="config1" to="hamlet@denmark.lit/elsinore" type="result">
+  <pubsub xmlns="http://jabber.org/protocol/pubsub#owner">
+    <configure node="princely_musings">
+      <x type="form" xmlns="jabber:x:data">
+        <field type="hidden" var="FORM_TYPE">
+          <value>http://jabber.org/protocol/pubsub#node_config</value>
+        </field>
+        <field label="Purge all items when the relevant publisher goes offline?" type="boolean" var="pubsub#purge_offline">
+          <value>0</value>
+        </field>
+        <field label="Max Payload size in bytes" type="text-single" var="pubsub#max_payload_size">
+          <value>1028</value>
+        </field>
+        <field label="When to send the last published item" type="list-single" var="pubsub#send_last_published_item">
+          <option label="Never">
+            <value>never</value>
+          </option>
+          <option label="When a new subscription is processed">
+            <value>on_sub</value>
+          </option>
+          <option label="When a new subscription is processed and whenever a subscriber comes online">
+            <value>on_sub_and_presence</value>
+          </option>
+          <value>never</value>
+        </field>
+        <field label="Deliver event notifications only to available users" type="boolean" var="pubsub#presence_based_delivery">
+          <value>0</value>
+        </field>
+        <field label="Specify the delivery style for event notifications" type="list-single" var="pubsub#notification_type">
+          <option>
+            <value>normal</value>
+          </option>
+          <option>
+            <value>headline</value>
+          </option>
+          <value>headline</value>
+        </field>
+        <field label="Specify the type of payload data to be provided at this node" type="text-single" var="pubsub#type">
+          <value>http://www.w3.org/2005/Atom</value>
+        </field>
+        <field label="Payload XSLT" type="text-single" var="pubsub#dataform_xslt"/>
+      </x>
+    </configure>
+  </pubsub>
+</iq>
+`
+	var iq stanza.IQ
+	err := xml.Unmarshal([]byte(response), &iq)
+	if err != nil {
+		t.Fatalf("could not parse IQ")
+	}
+
+	fields, err := iq.GetFormFields()
+	if len(fields) != 8 {
+		t.Fatalf("could not correctly parse fields. Expected 8, found : %v", len(fields))
+	}
+
+}
+
+func TestGetFormFieldsCmd(t *testing.T) {
+	response := `
+	<iq from="pubsub.shakespeare.lit" id="pending1" to="hamlet@denmark.lit/elsinore" type="result">
+  <command action="execute" node="http://jabber.org/protocol/pubsub#get-pending" sessionid="pubsub-get-pending:20031021T150901Z-600" status="executing" xmlns="http://jabber.org/protocol/commands">
+    <x type="form" xmlns="jabber:x:data">
+      <field type="hidden" var="FORM_TYPE">
+        <value>http://jabber.org/protocol/pubsub#subscribe_authorization</value>
+      </field>
+      <field type="list-single" var="pubsub#node">
+        <option>
+          <value>princely_musings</value>
+        </option>
+        <option>
+          <value>news_from_elsinore</value>
+        </option>
+      </field>
+    </x>
+  </command>
+</iq>
+`
+	var iq stanza.IQ
+	err := xml.Unmarshal([]byte(response), &iq)
+	if err != nil {
+		t.Fatalf("could not parse IQ")
+	}
+
+	fields, err := iq.GetFormFields()
+	if len(fields) != 2 {
+		t.Fatalf("could not correctly parse fields. Expected 2, found : %v", len(fields))
+	}
+
+}
+
+func TestNewFormSubmissionOwner(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"config2\" to=\"pubsub.shakespeare.lit\">" +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub#owner\"> <configure node=\"princely_musings\"> " +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\" > <field var=\"FORM_TYPE\" type=\"hidden\"> " +
+		"<value>http://jabber.org/protocol/pubsub#node_config</value> </field> <field var=\"pubsub#item_expire\"> " +
+		"<value>604800</value> </field> <field var=\"pubsub#access_model\"> <value>roster</value> </field> " +
+		"<field var=\"pubsub#roster_groups_allowed\"> <value>friends</value> <value>servants</value> " +
+		"<value>courtiers</value> </field> </x> </configure> </pubsub> </iq>"
+
+	subR, err := stanza.NewFormSubmissionOwner("pubsub.shakespeare.lit",
+		"princely_musings",
+		[]*stanza.Field{
+			{Var: "FORM_TYPE", Type: stanza.FieldTypeHidden, ValuesList: []string{"http://jabber.org/protocol/pubsub#node_config"}},
+			{Var: "pubsub#item_expire", ValuesList: []string{"604800"}},
+			{Var: "pubsub#access_model", ValuesList: []string{"roster"}},
+			{Var: "pubsub#roster_groups_allowed", ValuesList: []string{"friends", "servants", "courtiers"}},
+		})
+	if err != nil {
+		t.Fatalf("failed to create a form submission request: %v", err)
+	}
+	subR.Id = "config2"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		t.Fatalf("payload is not a pubsub in namespace owner !")
+	}
+
+	conf, ok := pubsub.OwnerUseCase.(*stanza.ConfigureOwner)
+	if !ok {
+		t.Fatalf("pubsub does not contain a configure node !")
+	}
+
+	if conf.Form == nil {
+		t.Fatalf("the form is absent from the configuration submission !")
+	}
+	if len(conf.Form.Fields) != 4 {
+		t.Fatalf("expected 4 fields, found %d", len(conf.Form.Fields))
+	}
+	if len(conf.Form.Fields[3].ValuesList) != 3 {
+		t.Fatalf("expected 3 values in fourth field, found %d", len(conf.Form.Fields[3].ValuesList))
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func getPubSubOwnerPayload(response string) (*stanza.PubSubOwner, error) {
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+
+	if err != nil {
+		return &stanza.PubSubOwner{}, err
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubOwner)
+	if !ok {
+		return nil, errors.New("this iq payload is not a pubsub of the owner namespace")
+	}
+
+	return pubsub, nil
+}

stanza/pubsub_test.go

@@ -0,0 +1,922 @@
+package stanza_test
+
+import (
+	"encoding/xml"
+	"errors"
+	"gosrc.io/xmpp/stanza"
+	"strings"
+	"testing"
+)
+
+var submitFormExample = stanza.NewForm([]*stanza.Field{
+	{Var: "FORM_TYPE", Type: stanza.FieldTypeHidden, ValuesList: []string{"http://jabber.org/protocol/pubsub#node_config"}},
+	{Var: "pubsub#title", ValuesList: []string{"Princely Musings (Atom)"}},
+	{Var: "pubsub#deliver_notifications", ValuesList: []string{"1"}},
+	{Var: "pubsub#access_model", ValuesList: []string{"roster"}},
+	{Var: "pubsub#roster_groups_allowed", ValuesList: []string{"friends", "servants", "courtiers"}},
+	{Var: "pubsub#type", ValuesList: []string{"http://www.w3.org/2005/Atom"}},
+	{
+		Var:        "pubsub#notification_type",
+		Type:       "list-single",
+		Label:      "Specify the delivery style for event notifications",
+		ValuesList: []string{"headline"},
+		Options: []stanza.Option{
+			{ValuesList: []string{"normal"}},
+			{ValuesList: []string{"headline"}},
+		},
+	},
+}, stanza.FormTypeSubmit)
+
+// ***********************************
+// * 6.1 Subscribe to a Node
+// ***********************************
+
+func TestNewSubRequest(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"sub1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <subscribe node=\"princely_musings\"jid=\"francisco@denmark.lit\"></subscribe>" +
+		" </pubsub> </iq>"
+
+	subInfo := stanza.SubInfo{
+		Node: "princely_musings", Jid: "francisco@denmark.lit",
+	}
+	subR, err := stanza.NewSubRq("pubsub.shakespeare.lit", subInfo)
+	if err != nil {
+		t.Fatalf("failed to create a sub request: %v", err)
+	}
+	subR.Id = "sub1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+
+}
+
+func TestNewSubResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit/barracks" id="sub1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <subscription node="princely_musings" jid="francisco@denmark.lit"
+            subid="ba49252aaa4f5d320c24d3766f0bdcade78c78d3" subscription="subscribed"/>
+    </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if pubsub.Subscription == nil {
+		t.Fatalf("subscription node is nil")
+	}
+	if pubsub.Subscription.Node == "" ||
+		pubsub.Subscription.Jid == "" ||
+		pubsub.Subscription.SubId == nil ||
+		pubsub.Subscription.SubStatus == "" {
+		t.Fatalf("one or more of the subscription attributes was not successfully decoded")
+	}
+
+}
+
+// ***********************************
+// * 6.2 Unsubscribe from a Node
+// ***********************************
+
+func TestNewUnSubRequest(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"unsub1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> " +
+		"<unsubscribe node=\"princely_musings\"jid=\"francisco@denmark.lit\"></unsubscribe> </pubsub> </iq>"
+
+	subInfo := stanza.SubInfo{
+		Node: "princely_musings", Jid: "francisco@denmark.lit",
+	}
+	subR, err := stanza.NewUnsubRq("pubsub.shakespeare.lit", subInfo)
+	if err != nil {
+		t.Fatalf("failed to create an unsub request: %v", err)
+	}
+	subR.Id = "unsub1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Unsubscribe == nil {
+		t.Fatalf("Unsubscribe tag should be present in sub config options request")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewUnsubResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit/barracks" id="unsub1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <subscription node="princely_musings" jid="francisco@denmark.lit" subscription="none"
+            subid="ba49252aaa4f5d320c24d3766f0bdcade78c78d3"/>
+    </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if pubsub.Subscription == nil {
+		t.Fatalf("subscription node is nil")
+	}
+	if pubsub.Subscription.Node == "" ||
+		pubsub.Subscription.Jid == "" ||
+		pubsub.Subscription.SubId == nil ||
+		pubsub.Subscription.SubStatus == "" {
+		t.Fatalf("one or more of the subscription attributes was not successfully decoded")
+	}
+
+}
+
+// ***************************************
+// * 6.3 Configure Subscription Options
+// ***************************************
+func TestNewSubOptsRq(t *testing.T) {
+	expectedReq := "<iq type=\"get\"id=\"options1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> " +
+		"<options node=\"princely_musings\" jid=\"francisco@denmark.lit\"></options> </pubsub> </iq>"
+
+	subInfo := stanza.SubInfo{
+		Node: "princely_musings", Jid: "francisco@denmark.lit",
+	}
+	subR, err := stanza.NewSubOptsRq("pubsub.shakespeare.lit", subInfo)
+	if err != nil {
+		t.Fatalf("failed to create a sub options request: %v", err)
+	}
+	subR.Id = "options1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.SubOptions == nil {
+		t.Fatalf("Options tag should be present in sub config options request")
+	}
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewNewConfOptsRsp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit/barracks" id="options1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <options node="princely_musings" jid="francisco@denmark.lit">
+            <x xmlns="jabber:x:data" type="form">
+                <field var="FORM_TYPE" type="hidden">
+                    <value>http://jabber.org/protocol/pubsub#subscribe_options</value>
+                </field>
+                <field var="pubsub#deliver" type="boolean" label="Enable delivery?">
+                    <value>1</value>
+                </field>
+                <field var="pubsub#digest" type="boolean"
+                    label="Receive digest notifications (approx. one per day)?">
+                    <value>0</value>
+                </field>
+                <field var="pubsub#include_body" type="boolean"
+                    label="Receive message body in addition to payload?">
+                    <value>false</value>
+                </field>
+                <field var="pubsub#show-values" type="list-multi"
+                    label="Select the presence types which are
+                    allowed to receive event notifications">
+                    <option label="Want to Chat">
+                        <value>chat</value>
+                    </option>
+                    <option label="Available">
+                        <value>online</value>
+                    </option>
+                    <option label="Away">
+                        <value>away</value>
+                    </option>
+                    <option label="Extended Away">
+                        <value>xa</value>
+                    </option>
+                    <option label="Do Not Disturb">
+                        <value>dnd</value>
+                    </option>
+                    <value>chat</value>
+                    <value>online</value>
+                </field>
+            </x>
+        </options>
+    </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	if pubsub.SubOptions == nil {
+		t.Fatalf("sub options node is nil")
+	}
+	if pubsub.SubOptions.Form == nil {
+		t.Fatalf("the response form is nil")
+	}
+
+	if len(pubsub.SubOptions.Form.Fields) != 5 {
+		t.Fatalf("one or more fields in the response form could not be parsed correctly")
+	}
+}
+
+// ***************************************
+// * 6.3.5 Form Submission
+// ***************************************
+func TestNewFormSubmission(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"options2\" to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <options node=\"princely_musings\" jid=\"francisco@denmark.lit\"> " +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\"> <field var=\"FORM_TYPE\" type=\"hidden\">" +
+		" <value>http://jabber.org/protocol/pubsub#node_config</value> </field> <field var=\"pubsub#title\"> " +
+		"<value>Princely Musings (Atom)</value> </field> <field var=\"pubsub#deliver_notifications\"> " +
+		"<value>1</value> </field> <field var=\"pubsub#access_model\"> <value>roster</value> </field> " +
+		"<field var=\"pubsub#roster_groups_allowed\"> <value>friends</value> <value>servants</value>" +
+		" <value>courtiers</value> </field> <field var=\"pubsub#type\"> <value>http://www.w3.org/2005/Atom</value> " +
+		"</field> <field var=\"pubsub#notification_type\" type=\"list-single\"label=\"Specify the delivery style for event notifications\"> " +
+		"<value>headline</value> <option> <value>normal</value> </option> <option> <value>headline</value> </option> " +
+		"</field> </x> </options> </pubsub> </iq>"
+
+	subInfo := stanza.SubInfo{
+		Node: "princely_musings", Jid: "francisco@denmark.lit",
+	}
+
+	subR, err := stanza.NewFormSubmission("pubsub.shakespeare.lit", subInfo, submitFormExample)
+	if err != nil {
+		t.Fatalf("failed to create a form submission request: %v", err)
+	}
+	subR.Id = "options2"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.SubOptions == nil {
+		t.Fatalf("Options tag should be present in sub config options request")
+	}
+	if pubsub.SubOptions.Form == nil {
+		t.Fatalf("No form in form submit request !")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ***************************************
+// * 6.3.7 Subscribe and Configure
+// ***************************************
+
+func TestNewSubAndConfig(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"sub1\"to=\"pubsub.shakespeare.lit\">" +
+		" <pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <subscribe node=\"princely_musings\" jid=\"francisco@denmark.lit\"> " +
+		"</subscribe>" +
+		"<options> <x xmlns=\"jabber:x:data\" type=\"submit\"> <field var=\"FORM_TYPE\" type=\"hidden\">" +
+		" <value>http://jabber.org/protocol/pubsub#node_config</value> </field> <field var=\"pubsub#title\"> " +
+		"<value>Princely Musings (Atom)</value> </field> <field var=\"pubsub#deliver_notifications\"> " +
+		"<value>1</value> </field> <field var=\"pubsub#access_model\"> <value>roster</value> </field> " +
+		"<field var=\"pubsub#roster_groups_allowed\"> <value>friends</value> <value>servants</value>" +
+		" <value>courtiers</value> </field> <field var=\"pubsub#type\"> <value>http://www.w3.org/2005/Atom</value> " +
+		"</field> <field var=\"pubsub#notification_type\" type=\"list-single\"label=\"Specify the delivery style for event notifications\"> " +
+		"<value>headline</value> <option> <value>normal</value> </option> <option> <value>headline</value> </option> " +
+		"</field> </x> </options> </pubsub> </iq>"
+
+	subInfo := stanza.SubInfo{
+		Node: "princely_musings", Jid: "francisco@denmark.lit",
+	}
+
+	subR, err := stanza.NewSubAndConfig("pubsub.shakespeare.lit", subInfo, submitFormExample)
+	if err != nil {
+		t.Fatalf("failed to create a sub and config request: %v", err)
+	}
+	subR.Id = "sub1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.SubOptions == nil {
+		t.Fatalf("Options tag should be present in sub config options request")
+	}
+	if pubsub.SubOptions.Form == nil {
+		t.Fatalf("No form in form submit request !")
+	}
+
+	// The <options/> element MUST NOT possess a 'node' attribute or 'jid' attribute
+	// See XEP-0060
+	if pubsub.SubOptions.SubInfo.Node != "" || pubsub.SubOptions.SubInfo.Jid != "" {
+		t.Fatalf("SubInfo node and jid should be empty for the options tag !")
+	}
+	if pubsub.Subscribe.Node == "" || pubsub.Subscribe.Jid == "" {
+		t.Fatalf("SubInfo node and jid should NOT be empty for the subscribe tag !")
+	}
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewSubAndConfigResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit/barracks" id="sub1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <subscription node="princely_musings" jid="francisco@denmark.lit"
+            subid="ba49252aaa4f5d320c24d3766f0bdcade78c78d3" subscription="subscribed"/>
+        <options>
+            <x xmlns="jabber:x:data" type="result">
+                <field var="FORM_TYPE" type="hidden">
+                    <value>http://jabber.org/protocol/pubsub#subscribe_options</value>
+                </field>
+                <field var="pubsub#deliver">
+                    <value>1</value>
+                </field>
+                <field var="pubsub#digest">
+                    <value>0</value>
+                </field>
+                <field var="pubsub#include_body">
+                    <value>false</value>
+                </field>
+                <field var="pubsub#show-values">
+                    <value>chat</value>
+                    <value>online</value>
+                    <value>away</value>
+                </field>
+            </x>
+        </options>
+    </pubsub>
+</iq>
+
+`
+
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.Subscription == nil {
+		t.Fatalf("sub node is nil")
+	}
+
+	if pubsub.SubOptions == nil {
+		t.Fatalf("sub options node is nil")
+	}
+	if pubsub.SubOptions.Form == nil {
+		t.Fatalf("the response form is nil")
+	}
+
+	if len(pubsub.SubOptions.Form.Fields) != 5 {
+		t.Fatalf("one or more fields in the response form could not be parsed correctly")
+	}
+}
+
+// ***************************************
+// * 6.5.2 Requesting All List
+// ***************************************
+func TestNewItemsRequest(t *testing.T) {
+	subR, err := stanza.NewItemsRequest("pubsub.shakespeare.lit", "princely_musings", 0)
+	if err != nil {
+		t.Fatalf("Could not create an items request : %s", err)
+	}
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Items == nil {
+		t.Fatalf("List tag should be present to request items from a service")
+	}
+	if len(pubsub.Items.List) != 0 {
+		t.Fatalf("There should be no items in the <items> tag to request all	 items from a service")
+	}
+}
+func TestNewItemsResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit/barracks" id="items2">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <items node="princely_musings">
+            <item id="4e30f35051b7b8b42abe083742187228">
+                <entry xmlns="http://www.w3.org/2005/Atom">
+                    <title>Alone</title>
+                    <summary> Now I am alone. O, what a rogue and peasant slave am I! </summary>
+                    <link rel="alternate" type="text/html"
+                        href="http://denmark.lit/2003/12/13/atom03"/>
+                    <id>tag:denmark.lit,2003:entry-32396</id>
+                    <published>2003-12-13T11:09:53Z</published>
+                    <updated>2003-12-13T11:09:53Z</updated>
+                </entry>
+            </item>
+            <item id="ae890ac52d0df67ed7cfdf51b644e901">
+                <entry xmlns="http://www.w3.org/2005/Atom">
+                    <title>Soliloquy</title>
+                    <summary> To be, or not to be: that is the question: Whether 'tis nobler in the
+                        mind to suffer The slings and arrows of outrageous fortune, Or to take arms
+                        against a sea of troubles, And by opposing end them? </summary>
+                    <link rel="alternate" type="text/html"
+                        href="http://denmark.lit/2003/12/13/atom03"/>
+                    <id>tag:denmark.lit,2003:entry-32397</id>
+                    <published>2003-12-13T18:30:02Z</published>
+                    <updated>2003-12-13T18:30:02Z</updated>
+                </entry>
+            </item>
+        </items>
+    </pubsub>
+</iq>
+`
+
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.Items == nil {
+		t.Fatalf("sub options node is nil")
+	}
+	if pubsub.Items.List == nil {
+		t.Fatalf("the response form is nil")
+	}
+
+	if len(pubsub.Items.List) != 2 {
+		t.Fatalf("one or more items in the response could not be parsed correctly")
+	}
+}
+
+// ***************************************
+// * 6.5.8 Requesting a Particular Item
+// ***************************************
+func TestNewSpecificItemRequest(t *testing.T) {
+	expectedReq := "<iq type=\"get\" id=\"items3\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <items node=\"princely_musings\"> " +
+		"<item id=\"ae890ac52d0df67ed7cfdf51b644e901\"></item> </items> </pubsub> </iq>"
+
+	subR, err := stanza.NewSpecificItemRequest("pubsub.shakespeare.lit", "princely_musings", "ae890ac52d0df67ed7cfdf51b644e901")
+	if err != nil {
+		t.Fatalf("failed to create a specific item request: %v", err)
+	}
+	subR.Id = "items3"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Items == nil {
+		t.Fatalf("List tag should be present to request items from a service")
+	}
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ***************************************
+// * 7.1 Publish an Item to a Node
+// ***************************************
+func TestNewPublishItemRq(t *testing.T) {
+	item := stanza.Item{
+		XMLName:   xml.Name{},
+		Id:        "",
+		Publisher: "",
+		Any: &stanza.Node{
+			XMLName: xml.Name{
+				Space: "http://www.w3.org/2005/Atom",
+				Local: "entry",
+			},
+			Attrs:   nil,
+			Content: "",
+			Nodes: []stanza.Node{
+				{
+					XMLName: xml.Name{Space: "", Local: "title"},
+					Attrs:   nil,
+					Content: "My pub item title",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "summary"},
+					Attrs:   nil,
+					Content: "My pub item content summary",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "link"},
+					Attrs: []xml.Attr{
+						{
+							Name:  xml.Name{Space: "", Local: "rel"},
+							Value: "alternate",
+						},
+						{
+							Name:  xml.Name{Space: "", Local: "type"},
+							Value: "text/html",
+						},
+						{
+							Name:  xml.Name{Space: "", Local: "href"},
+							Value: "http://denmark.lit/2003/12/13/atom03",
+						},
+					},
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "id"},
+					Attrs:   nil,
+					Content: "My pub item content ID",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "published"},
+					Attrs:   nil,
+					Content: "2003-12-13T18:30:02Z",
+					Nodes:   nil,
+				},
+				{
+					XMLName: xml.Name{Space: "", Local: "updated"},
+					Attrs:   nil,
+					Content: "2003-12-13T18:30:02Z",
+					Nodes:   nil,
+				},
+			},
+		},
+	}
+
+	subR, err := stanza.NewPublishItemRq("pubsub.shakespeare.lit", "princely_musings", "bnd81g37d61f49fgn581", item)
+	if err != nil {
+		t.Fatalf("Could not create an item pub request : %s", err)
+	}
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated sub request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+
+	if strings.TrimSpace(pubsub.Publish.Node) == "" {
+		t.Fatalf("the <publish/> element MUST possess a 'node' attribute, specifying the NodeID of the node.")
+	}
+	if pubsub.Publish.Items[0].Id == "" {
+		t.Fatalf("an id was provided for the item and it should be used")
+	}
+}
+
+// ***************************************
+// * 7.1.5 Publishing Options
+// ***************************************
+
+func TestNewPublishItemOptsRq(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"pub1\"to=\"pubsub.shakespeare.lit\"> <pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> " +
+		"<publish node=\"princely_musings\"> <item id=\"ae890ac52d0df67ed7cfdf51b644e901\"> " +
+		"<entry xmlns=\"http://www.w3.org/2005/Atom\"> <title>Soliloquy</title> " +
+		"<summary> To be, or not to be: that is the question: Whether \"tis nobler in the mind to suffer The " +
+		"slings and arrows of outrageous fortune, Or to take arms against a sea of troubles, And by opposing end them? " +
+		"</summary> <link rel=\"alternate\" type=\"text/html\"href=\"http://denmark.lit/2003/12/13/atom03\"></link> " +
+		"<id>tag:denmark.lit,2003:entry-32397</id> <published>2003-12-13T18:30:02Z</published> " +
+		"<updated>2003-12-13T18:30:02Z</updated> </entry> </item> </publish> <publish-options> " +
+		"<x xmlns=\"jabber:x:data\" type=\"submit\"> <field var=\"FORM_TYPE\" type=\"hidden\"> " +
+		"<value>http://jabber.org/protocol/pubsub#publish-options</value> </field> <field var=\"pubsub#access_model\"> " +
+		"<value>presence</value> </field> </x> </publish-options> </pubsub> </iq>"
+
+	var iq stanza.IQ
+	err := xml.Unmarshal([]byte(expectedReq), &iq)
+	if err != nil {
+		t.Fatalf("could not unmarshal example request : %s", err)
+	}
+
+	pubsub, ok := iq.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Publish == nil {
+		t.Fatalf("Publish tag is empty")
+	}
+	if len(pubsub.Publish.Items) != 1 {
+		t.Fatalf("could not parse item properly")
+	}
+}
+
+// ***************************************
+// * 7.2 Delete an Item from a Node
+// ***************************************
+
+func TestNewDelItemFromNode(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"retract1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <retract node=\"princely_musings\"> " +
+		"<item id=\"ae890ac52d0df67ed7cfdf51b644e901\"></item> </retract> </pubsub> </iq>"
+
+	subR, err := stanza.NewDelItemFromNode("pubsub.shakespeare.lit", "princely_musings", "ae890ac52d0df67ed7cfdf51b644e901", nil)
+	if err != nil {
+		t.Fatalf("failed to create a delete item from node request: %v", err)
+	}
+	subR.Id = "retract1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated del item request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Retract == nil {
+		t.Fatalf("Retract tag should be present to del an item from a service")
+	}
+
+	if strings.TrimSpace(pubsub.Retract.Items[0].Id) == "" {
+		t.Fatalf("Item id, for the item to delete, should be non empty")
+	}
+	if pubsub.Retract.Items[0].Any != nil {
+		t.Fatalf("Item node must be empty")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+// ***************************************
+// * 8.1 Create a Node
+// ***************************************
+
+func TestNewCreateNode(t *testing.T) {
+	expectedReq := "<iq type=\"set\"id=\"create1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <create node=\"princely_musings\"></create> </pubsub> </iq>"
+
+	subR, err := stanza.NewCreateNode("pubsub.shakespeare.lit", "princely_musings")
+	if err != nil {
+		t.Fatalf("failed to create a create node request: %v", err)
+	}
+	subR.Id = "create1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated del item request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Create == nil {
+		t.Fatalf("Create tag should be present to create a node on a service")
+	}
+
+	if strings.TrimSpace(pubsub.Create.Node) == "" {
+		t.Fatalf("Expected node name to be present")
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestNewCreateNodeResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="hamlet@denmark.lit/elsinore" id="create2">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <create node="25e3d37dabbab9541f7523321421edc5bfeb2dae"/>
+    </pubsub>
+</iq>
+`
+	pubsub, err := getPubSubGenericPayload(response)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if pubsub.Create == nil {
+		t.Fatalf("create segment is nil")
+	}
+	if pubsub.Create.Node == "" {
+		t.Fatalf("could not parse generated nodeId")
+	}
+
+}
+
+// ***************************************
+// * 8.1.3 Create and Configure a Node
+// ***************************************
+
+func TestNewCreateAndConfigNode(t *testing.T) {
+	expectedReq := "<iq type=\"set\" id=\"create1\" to=\"pubsub.shakespeare.lit\" > " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <create node=\"princely_musings\"></create> " +
+		"<configure> <x xmlns=\"jabber:x:data\" type=\"submit\"> <field var=\"FORM_TYPE\" type=\"hidden\" > " +
+		"<value>http://jabber.org/protocol/pubsub#node_config</value> </field> <field var=\"pubsub#notify_retract\"> " +
+		"<value>0</value> </field> <field var=\"pubsub#notify_sub\"> <value>0</value> </field> " +
+		"<field var=\"pubsub#max_payload_size\"> <value>1028</value> </field> </x> </configure> </pubsub> </iq>"
+
+	subR, err := stanza.NewCreateAndConfigNode("pubsub.shakespeare.lit",
+		"princely_musings",
+		&stanza.Form{
+			Type: stanza.FormTypeSubmit,
+			Fields: []*stanza.Field{
+				{Var: "FORM_TYPE", Type: stanza.FieldTypeHidden, ValuesList: []string{"http://jabber.org/protocol/pubsub#node_config"}},
+				{Var: "pubsub#notify_retract", ValuesList: []string{"0"}},
+				{Var: "pubsub#notify_sub", ValuesList: []string{"0"}},
+				{Var: "pubsub#max_payload_size", ValuesList: []string{"1028"}},
+			},
+		})
+
+	if err != nil {
+		t.Fatalf("failed to create a create and config node request: %v", err)
+	}
+	subR.Id = "create1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated del item request : %s", e)
+	}
+
+	pubsub, ok := subR.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("payload is not a pubsub !")
+	}
+	if pubsub.Create == nil {
+		t.Fatalf("Create tag should be present to create a node on a service")
+	}
+
+	if strings.TrimSpace(pubsub.Create.Node) == "" {
+		t.Fatalf("Expected node name to be present")
+	}
+
+	if pubsub.Configure == nil {
+		t.Fatalf("Configure tag should be present to configure a node during its creation on a service")
+	}
+
+	if pubsub.Configure.Form == nil {
+		t.Fatalf("Expected a form to be present, to configure the node")
+	}
+	if len(pubsub.Configure.Form.Fields) != 4 {
+		t.Fatalf("Expected 4 elements to be present in the config form but got : %v", len(pubsub.Configure.Form.Fields))
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expectedReq, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+
+}
+
+// ********************************
+// * 5.7 Retrieve Subscriptions
+// ********************************
+
+func TestNewRetrieveAllSubsRequest(t *testing.T) {
+	expected := "<iq type=\"get\" id=\"subscriptions1\" to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <subscriptions></subscriptions> </pubsub> </iq>"
+
+	subR, err := stanza.NewRetrieveAllSubsRequest("pubsub.shakespeare.lit")
+	if err != nil {
+		t.Fatalf("failed to create a get all subs request: %v", err)
+	}
+	subR.Id = "subscriptions1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated del item request : %s", e)
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expected, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestRetrieveAllSubsResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit" id="subscriptions1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <subscriptions>
+            <subscription node="node1" jid="francisco@denmark.lit" subscription="subscribed"/>
+            <subscription node="node2" jid="francisco@denmark.lit" subscription="subscribed"/>
+            <subscription node="node5" jid="francisco@denmark.lit" subscription="unconfigured"/>
+            <subscription node="node6" jid="francisco@denmark.lit" subscription="subscribed"
+                subid="123-abc"/>
+            <subscription node="node6" jid="francisco@denmark.lit" subscription="subscribed"
+                subid="004-yyy"/>
+        </subscriptions>
+    </pubsub>
+</iq>
+`
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+
+	if err != nil {
+		t.Fatalf("could not unmarshal response: %s", err)
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("umarshalled payload is not a pubsub")
+	}
+
+	if pubsub.Subscriptions == nil {
+		t.Fatalf("subscriptions node is nil")
+	}
+	if len(pubsub.Subscriptions.List) != 5 {
+		t.Fatalf("incorrect number of decoded subscriptions")
+	}
+}
+
+// ********************************
+// * 5.7 Retrieve Affiliations
+// ********************************
+
+func TestNewRetrieveAllAffilsRequest(t *testing.T) {
+	expected := "<iq type=\"get\"id=\"affil1\"to=\"pubsub.shakespeare.lit\"> " +
+		"<pubsub xmlns=\"http://jabber.org/protocol/pubsub\"> <affiliations></affiliations> </pubsub> </iq>"
+
+	subR, err := stanza.NewRetrieveAllAffilsRequest("pubsub.shakespeare.lit")
+	if err != nil {
+		t.Fatalf("failed to create a get all affiliations request: %v", err)
+	}
+	subR.Id = "affil1"
+
+	if _, e := checkMarshalling(t, subR); e != nil {
+		t.Fatalf("Failed to check marshalling for generated retreive all affiliations request : %s", e)
+	}
+
+	data, err := xml.Marshal(subR)
+	if err := compareMarshal(expected, string(data)); err != nil {
+		t.Fatalf(err.Error())
+	}
+}
+
+func TestRetrieveAllAffilsResp(t *testing.T) {
+	response := `
+<iq type="result" from="pubsub.shakespeare.lit" to="francisco@denmark.lit" id="affil1">
+    <pubsub xmlns="http://jabber.org/protocol/pubsub">
+        <affiliations>
+            <affiliation node="node1" affiliation="owner"/>
+            <affiliation node="node2" affiliation="publisher"/>
+            <affiliation node="node5" affiliation="outcast"/>
+            <affiliation node="node6" affiliation="owner"/>
+        </affiliations>
+    </pubsub>
+</iq>
+`
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+
+	if err != nil {
+		t.Fatalf("could not unmarshal response: %s", err)
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		t.Fatalf("umarshalled payload is not a pubsub")
+	}
+
+	if pubsub.Affiliations == nil {
+		t.Fatalf("subscriptions node is nil")
+	}
+	if len(pubsub.Affiliations.List) != 4 {
+		t.Fatalf("incorrect number of decoded subscriptions")
+	}
+}
+
+func getPubSubGenericPayload(response string) (*stanza.PubSubGeneric, error) {
+	var respIQ stanza.IQ
+	err := xml.Unmarshal([]byte(response), &respIQ)
+
+	if err != nil {
+		return &stanza.PubSubGeneric{}, err
+	}
+
+	pubsub, ok := respIQ.Payload.(*stanza.PubSubGeneric)
+	if !ok {
+		return nil, errors.New("this iq payload is not a pubsub")
+	}
+
+	return pubsub, nil
+}

stanza/results_sets.go

@@ -0,0 +1,29 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// Support for XEP-0059
+// See https://xmpp.org/extensions/xep-0059
+const (
+	// Common but not only possible namespace for query blocks in a result set context
+	NSQuerySet = "jabber:iq:search"
+)
+
+type ResultSet struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/rsm set"`
+	After   *string  `xml:"after,omitempty"`
+	Before  *string  `xml:"before,omitempty"`
+	Count   *int     `xml:"count,omitempty"`
+	First   *First   `xml:"first,omitempty"`
+	Index   *int     `xml:"index,omitempty"`
+	Last    *string  `xml:"last,omitempty"`
+	Max     *int     `xml:"max,omitempty"`
+}
+
+type First struct {
+	XMLName xml.Name `xml:"first"`
+	Content string
+	Index   *int `xml:"index,attr,omitempty"`
+}

stanza/results_sets_test.go

@@ -0,0 +1,28 @@
+package stanza_test
+
+import (
+	"gosrc.io/xmpp/stanza"
+	"testing"
+)
+
+// Limiting the number of items
+func TestNewResultSetReq(t *testing.T) {
+	expectedRq := "<iq id=\"q29302\" type=\"set\"> <query xmlns=\"urn:xmpp:mam:2\"> " +
+		"<x type=\"submit\" xmlns=\"jabber:x:data\"> <field type=\"hidden\" var=\"FORM_TYPE\"> " +
+		"<value>urn:xmpp:mam:2</value> </field> <field var=\"start\"> <value>2010-08-07T00:00:00Z</value> </field> </x> " +
+		"<set xmlns=\"http://jabber.org/protocol/rsm\"> <max>10</max> </set> </query> </iq>"
+
+	maxVal := 10
+	rs := &stanza.ResultSet{
+		Max: &maxVal,
+	}
+
+	// TODO when Mam is implemented
+	_ = expectedRq
+	_ = rs
+}
+
+func TestUnmarshalResultSeqReq(t *testing.T) {
+	// TODO when Mam is implemented
+
+}

stanza/sasl_auth.go

@@ -69,12 +69,18 @@ type Bind struct {
 	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-bind bind"`
 	Resource string   `xml:"resource,omitempty"`
 	Jid      string   `xml:"jid,omitempty"`
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (b *Bind) Namespace() string {
 	return b.XMLName.Space
 }
 
+func (b *Bind) GetSet() *ResultSet {
+	return b.ResultSet
+}
+
 // ============================================================================
 // Session (Obsolete)
 
@@ -87,17 +93,23 @@ func (b *Bind) Namespace() string {
 // This is the draft defining how to handle the transition:
 //    https://tools.ietf.org/html/draft-cridland-xmpp-session-01
 type StreamSession struct {
-	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-session session"`
-	Optional bool     // If element does exist, it mean we are not required to open session
+	XMLName  xml.Name  `xml:"urn:ietf:params:xml:ns:xmpp-session session"`
+	Optional *struct{} // If element does exist, it mean we are not required to open session
+	// Result sets
+	ResultSet *ResultSet `xml:"set,omitempty"`
 }
 
 func (s *StreamSession) Namespace() string {
 	return s.XMLName.Space
 }
 
+func (s *StreamSession) GetSet() *ResultSet {
+	return s.ResultSet
+}
+
 func (s *StreamSession) IsOptional() bool {
 	if s.XMLName.Local == "session" {
-		return s.Optional
+		return s.Optional != nil
 	}
 	// If session element is missing, then we should not use session
 	return true
@@ -107,6 +119,6 @@ func (s *StreamSession) IsOptional() bool {
 // Registry init
 
 func init() {
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"urn:ietf:params:xml:ns:xmpp-bind", "bind"}, Bind{})
-	TypeRegistry.MapExtension(PKTIQ, xml.Name{"urn:ietf:params:xml:ns:xmpp-session", "session"}, StreamSession{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-bind", Local: "bind"}, Bind{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{Space: "urn:ietf:params:xml:ns:xmpp-session", Local: "session"}, StreamSession{})
 }

stanza/sasl_auth_test.go

@@ -9,7 +9,7 @@ import (
 
 // Check that we can detect optional session from advertised stream features
 func TestSessionFeatures(t *testing.T) {
-	streamFeatures := stanza.StreamFeatures{Session: stanza.StreamSession{Optional: true}}
+	streamFeatures := stanza.StreamFeatures{Session: stanza.StreamSession{Optional: &struct{}{}}}
 
 	data, err := xml.Marshal(streamFeatures)
 	if err != nil {
@@ -28,8 +28,11 @@ func TestSessionFeatures(t *testing.T) {
 
 // Check that the Session tag can be used in IQ decoding
 func TestSessionIQ(t *testing.T) {
-	iq := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeSet, Id: "session"})
-	iq.Payload = &stanza.StreamSession{XMLName: xml.Name{Local: "session"}, Optional: true}
+	iq, err := stanza.NewIQ(stanza.Attrs{Type: stanza.IQTypeSet, Id: "session"})
+	if err != nil {
+		t.Fatalf("failed to create IQ: %v", err)
+	}
+	iq.Payload = &stanza.StreamSession{XMLName: xml.Name{Local: "session"}, Optional: &struct{}{}}
 
 	data, err := xml.Marshal(iq)
 	if err != nil {

stanza/stanza_errors.go

@@ -0,0 +1,171 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+type StanzaErrorGroup interface {
+	GroupErrorName() string
+}
+
+type BadFormat struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas bad-format"`
+}
+
+func (e *BadFormat) GroupErrorName() string { return "bad-format" }
+
+type BadNamespacePrefix struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas bad-namespace-prefix"`
+}
+
+func (e *BadNamespacePrefix) GroupErrorName() string { return "bad-namespace-prefix" }
+
+type Conflict struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas conflict"`
+}
+
+func (e *Conflict) GroupErrorName() string { return "conflict" }
+
+type ConnectionTimeout struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas connection-timeout"`
+}
+
+func (e *ConnectionTimeout) GroupErrorName() string { return "connection-timeout" }
+
+type HostGone struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas host-gone"`
+}
+
+func (e *HostGone) GroupErrorName() string { return "host-gone" }
+
+type HostUnknown struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas host-unknown"`
+}
+
+func (e *HostUnknown) GroupErrorName() string { return "host-unknown" }
+
+type ImproperAddressing struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas improper-addressing"`
+}
+
+func (e *ImproperAddressing) GroupErrorName() string { return "improper-addressing" }
+
+type InternalServerError struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas internal-server-error"`
+}
+
+func (e *InternalServerError) GroupErrorName() string { return "internal-server-error" }
+
+type InvalidForm struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas invalid-from"`
+}
+
+func (e *InvalidForm) GroupErrorName() string { return "invalid-from" }
+
+type InvalidId struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas invalid-id"`
+}
+
+func (e *InvalidId) GroupErrorName() string { return "invalid-id" }
+
+type InvalidNamespace struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas invalid-namespace"`
+}
+
+func (e *InvalidNamespace) GroupErrorName() string { return "invalid-namespace" }
+
+type InvalidXML struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas invalid-xml"`
+}
+
+func (e *InvalidXML) GroupErrorName() string { return "invalid-xml" }
+
+type NotAuthorized struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas not-authorized"`
+}
+
+func (e *NotAuthorized) GroupErrorName() string { return "not-authorized" }
+
+type NotWellFormed struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas not-well-formed"`
+}
+
+func (e *NotWellFormed) GroupErrorName() string { return "not-well-formed" }
+
+type PolicyViolation struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas policy-violation"`
+}
+
+func (e *PolicyViolation) GroupErrorName() string { return "policy-violation" }
+
+type RemoteConnectionFailed struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas remote-connection-failed"`
+}
+
+func (e *RemoteConnectionFailed) GroupErrorName() string { return "remote-connection-failed" }
+
+type Reset struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas reset"`
+}
+
+func (e *Reset) GroupErrorName() string { return "reset" }
+
+type ResourceConstraint struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas resource-constraint"`
+}
+
+func (e *ResourceConstraint) GroupErrorName() string { return "resource-constraint" }
+
+type RestrictedXML struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas restricted-xml"`
+}
+
+func (e *RestrictedXML) GroupErrorName() string { return "restricted-xml" }
+
+type SeeOtherHost struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas see-other-host"`
+}
+
+func (e *SeeOtherHost) GroupErrorName() string { return "see-other-host" }
+
+type SystemShutdown struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas system-shutdown"`
+}
+
+func (e *SystemShutdown) GroupErrorName() string { return "system-shutdown" }
+
+type UndefinedCondition struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas undefined-condition"`
+}
+
+func (e *UndefinedCondition) GroupErrorName() string { return "undefined-condition" }
+
+type UnsupportedEncoding struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas unsupported-encoding"`
+}
+
+type UnexpectedRequest struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas unexpected-request"`
+}
+
+func (e *UnexpectedRequest) GroupErrorName() string { return "unexpected-request" }
+
+func (e *UnsupportedEncoding) GroupErrorName() string { return "unsupported-encoding" }
+
+type UnsupportedStanzaType struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas unsupported-stanza-type"`
+}
+
+func (e *UnsupportedStanzaType) GroupErrorName() string { return "unsupported-stanza-type" }
+
+type UnsupportedVersion struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas unsupported-version"`
+}
+
+func (e *UnsupportedVersion) GroupErrorName() string { return "unsupported-version" }
+
+type XMLNotWellFormed struct {
+	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas xml-not-well-formed"`
+}
+
+func (e *XMLNotWellFormed) GroupErrorName() string { return "xml-not-well-formed" }

stanza/stream.go

@@ -1,167 +1,16 @@
 package stanza
 
-import (
-	"encoding/xml"
-)
+import "encoding/xml"
 
-// ============================================================================
-// StreamFeatures Packet
-// Reference: The active stream features are published on
-//            https://xmpp.org/registrar/stream-features.html
-// Note: That page misses draft and experimental XEP (i.e CSI, etc)
-
-type StreamFeatures struct {
-	XMLName xml.Name `xml:"http://etherx.jabber.org/streams features"`
-	// Server capabilities hash
-	Caps Caps
-	// Stream features
-	StartTLS         tlsStartTLS
-	Mechanisms       saslMechanisms
-	Bind             Bind
-	StreamManagement streamManagement
-	// Obsolete
-	Session StreamSession
-	// ProcessOne Stream Features
-	P1Push   p1Push
-	P1Rebind p1Rebind
-	p1Ack    p1Ack
-	Any      []xml.Name `xml:",any"`
+// Start of stream
+// Reference: XMPP Core stream open
+//            https://tools.ietf.org/html/rfc6120#section-4.2
+type Stream struct {
+	XMLName xml.Name `xml:"http://etherx.jabber.org/streams stream"`
+	From    string   `xml:"from,attr"`
+	To      string   `xml:"to,attr"`
+	Id      string   `xml:"id,attr"`
+	Version string   `xml:"version,attr"`
 }
 
-func (StreamFeatures) Name() string {
-	return "stream:features"
-}
-
-type streamFeatureDecoder struct{}
-
-var streamFeatures streamFeatureDecoder
-
-func (streamFeatureDecoder) decode(p *xml.Decoder, se xml.StartElement) (StreamFeatures, error) {
-	var packet StreamFeatures
-	err := p.DecodeElement(&packet, &se)
-	return packet, err
-}
-
-// Capabilities
-// Reference: https://xmpp.org/extensions/xep-0115.html#stream
-//    "A server MAY include its entity capabilities in a stream feature element so that connecting clients
-//     and peer servers do not need to send service discovery requests each time they connect."
-// This is not a stream feature but a way to let client cache server disco info.
-type Caps struct {
-	XMLName xml.Name `xml:"http://jabber.org/protocol/caps c"`
-	Hash    string   `xml:"hash,attr"`
-	Node    string   `xml:"node,attr"`
-	Ver     string   `xml:"ver,attr"`
-	Ext     string   `xml:"ext,attr,omitempty"`
-}
-
-// ============================================================================
-// Supported Stream Features
-
-// StartTLS feature
-// Reference: RFC 6120 - https://tools.ietf.org/html/rfc6120#section-5.4
-type tlsStartTLS struct {
-	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-tls starttls"`
-	Required bool
-}
-
-// UnmarshalXML implements custom parsing startTLS required flag
-func (stls *tlsStartTLS) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
-	stls.XMLName = start.Name
-
-	// Check subelements to extract required field as boolean
-	for {
-		t, err := d.Token()
-		if err != nil {
-			return err
-		}
-
-		switch tt := t.(type) {
-
-		case xml.StartElement:
-			elt := new(Node)
-
-			err = d.DecodeElement(elt, &tt)
-			if err != nil {
-				return err
-			}
-
-			if elt.XMLName.Local == "required" {
-				stls.Required = true
-			}
-
-		case xml.EndElement:
-			if tt == start.End() {
-				return nil
-			}
-		}
-	}
-}
-
-func (sf *StreamFeatures) DoesStartTLS() (feature tlsStartTLS, isSupported bool) {
-	if sf.StartTLS.XMLName.Space+" "+sf.StartTLS.XMLName.Local == nsTLS+" starttls" {
-		return sf.StartTLS, true
-	}
-	return feature, false
-}
-
-// Mechanisms
-// Reference: RFC 6120 - https://tools.ietf.org/html/rfc6120#section-6.4.1
-type saslMechanisms struct {
-	XMLName   xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-sasl mechanisms"`
-	Mechanism []string `xml:"mechanism"`
-}
-
-// StreamManagement
-// Reference: XEP-0198 - https://xmpp.org/extensions/xep-0198.html#feature
-type streamManagement struct {
-	XMLName xml.Name `xml:"urn:xmpp:sm:3 sm"`
-}
-
-func (sf *StreamFeatures) DoesStreamManagement() (isSupported bool) {
-	if sf.StreamManagement.XMLName.Space+" "+sf.StreamManagement.XMLName.Local == "urn:xmpp:sm:3 sm" {
-		return true
-	}
-	return false
-}
-
-// P1 extensions
-// Reference: https://docs.ejabberd.im/developer/mobile/core-features/
-
-// p1:push support
-type p1Push struct {
-	XMLName xml.Name `xml:"p1:push push"`
-}
-
-// p1:rebind suppor
-type p1Rebind struct {
-	XMLName xml.Name `xml:"p1:rebind rebind"`
-}
-
-// p1:ack support
-type p1Ack struct {
-	XMLName xml.Name `xml:"p1:ack ack"`
-}
-
-// ============================================================================
-// StreamError Packet
-
-type StreamError struct {
-	XMLName xml.Name `xml:"http://etherx.jabber.org/streams error"`
-	Error   xml.Name `xml:",any"`
-	Text    string   `xml:"urn:ietf:params:xml:ns:xmpp-streams text"`
-}
-
-func (StreamError) Name() string {
-	return "stream:error"
-}
-
-type streamErrorDecoder struct{}
-
-var streamError streamErrorDecoder
-
-func (streamErrorDecoder) decode(p *xml.Decoder, se xml.StartElement) (StreamError, error) {
-	var packet StreamError
-	err := p.DecodeElement(&packet, &se)
-	return packet, err
-}
+const StreamClose = "</stream:stream>"

stanza/stream_features.go

@@ -0,0 +1,189 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// ============================================================================
+// StreamFeatures Packet
+// Reference: The active stream features are published on
+//            https://xmpp.org/registrar/stream-features.html
+// Note: That page misses draft and experimental XEP (i.e CSI, etc)
+
+type StreamFeatures struct {
+	XMLName xml.Name `xml:"http://etherx.jabber.org/streams features"`
+	// Server capabilities hash
+	Caps Caps
+	// Stream features
+	StartTLS         TlsStartTLS
+	Mechanisms       saslMechanisms
+	Bind             Bind
+	StreamManagement streamManagement
+	// Obsolete
+	Session StreamSession
+	// ProcessOne Stream Features
+	P1Push   p1Push
+	P1Rebind p1Rebind
+	p1Ack    p1Ack
+	Any      []xml.Name `xml:",any"`
+}
+
+func (StreamFeatures) Name() string {
+	return "stream:features"
+}
+
+type streamFeatureDecoder struct{}
+
+var streamFeatures streamFeatureDecoder
+
+func (streamFeatureDecoder) decode(p *xml.Decoder, se xml.StartElement) (StreamFeatures, error) {
+	var packet StreamFeatures
+	err := p.DecodeElement(&packet, &se)
+	return packet, err
+}
+
+// Capabilities
+// Reference: https://xmpp.org/extensions/xep-0115.html#stream
+//    "A server MAY include its entity capabilities in a stream feature element so that connecting clients
+//     and peer servers do not need to send service discovery requests each time they connect."
+// This is not a stream feature but a way to let client cache server disco info.
+type Caps struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/caps c"`
+	Hash    string   `xml:"hash,attr"`
+	Node    string   `xml:"node,attr"`
+	Ver     string   `xml:"ver,attr"`
+	Ext     string   `xml:"ext,attr,omitempty"`
+}
+
+// ============================================================================
+// Supported Stream Features
+
+// StartTLS feature
+// Reference: RFC 6120 - https://tools.ietf.org/html/rfc6120#section-5.4
+type TlsStartTLS struct {
+	XMLName  xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-tls starttls"`
+	Required bool
+}
+
+// UnmarshalXML implements custom parsing startTLS required flag
+func (stls *TlsStartTLS) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	stls.XMLName = start.Name
+
+	// Check subelements to extract required field as boolean
+	for {
+		t, err := d.Token()
+		if err != nil {
+			return err
+		}
+
+		switch tt := t.(type) {
+
+		case xml.StartElement:
+			elt := new(Node)
+
+			err = d.DecodeElement(elt, &tt)
+			if err != nil {
+				return err
+			}
+
+			if elt.XMLName.Local == "required" {
+				stls.Required = true
+			}
+
+		case xml.EndElement:
+			if tt == start.End() {
+				return nil
+			}
+		}
+	}
+}
+
+func (sf *StreamFeatures) DoesStartTLS() (feature TlsStartTLS, isSupported bool) {
+	if sf.StartTLS.XMLName.Space+" "+sf.StartTLS.XMLName.Local == nsTLS+" starttls" {
+		return sf.StartTLS, true
+	}
+	return feature, false
+}
+
+// Mechanisms
+// Reference: RFC 6120 - https://tools.ietf.org/html/rfc6120#section-6.4.1
+type saslMechanisms struct {
+	XMLName   xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-sasl mechanisms"`
+	Mechanism []string `xml:"mechanism"`
+}
+
+// StreamManagement
+// Reference: XEP-0198 - https://xmpp.org/extensions/xep-0198.html#feature
+type streamManagement struct {
+	XMLName xml.Name `xml:"urn:xmpp:sm:3 sm"`
+}
+
+func (streamManagement) Name() string {
+	return "streamManagement"
+}
+
+func (sf *StreamFeatures) DoesStreamManagement() (isSupported bool) {
+	if sf.StreamManagement.XMLName.Space+" "+sf.StreamManagement.XMLName.Local == "urn:xmpp:sm:3 sm" {
+		return true
+	}
+	return false
+}
+
+// P1 extensions
+// Reference: https://docs.ejabberd.im/developer/mobile/core-features/
+
+// p1:push support
+type p1Push struct {
+	XMLName xml.Name `xml:"p1:push push"`
+}
+
+// p1:rebind suppor
+type p1Rebind struct {
+	XMLName xml.Name `xml:"p1:rebind rebind"`
+}
+
+// p1:ack support
+type p1Ack struct {
+	XMLName xml.Name `xml:"p1:ack ack"`
+}
+
+// ============================================================================
+// StreamError Packet
+
+type StreamError struct {
+	XMLName xml.Name `xml:"http://etherx.jabber.org/streams error"`
+	Error   xml.Name `xml:",any"`
+	Text    string   `xml:"urn:ietf:params:xml:ns:xmpp-streams text"`
+}
+
+func (StreamError) Name() string {
+	return "stream:error"
+}
+
+type streamErrorDecoder struct{}
+
+var streamError streamErrorDecoder
+
+func (streamErrorDecoder) decode(p *xml.Decoder, se xml.StartElement) (StreamError, error) {
+	var packet StreamError
+	err := p.DecodeElement(&packet, &se)
+	return packet, err
+}
+
+// ============================================================================
+// StreamClose "Packet"
+
+// This is just a closing tag and hold no information
+type StreamClosePacket struct{}
+
+func (StreamClosePacket) Name() string {
+	return "stream:stream"
+}
+
+type streamCloseDecoder struct{}
+
+var streamClose streamCloseDecoder
+
+func (streamCloseDecoder) decode(_ xml.EndElement) StreamClosePacket {
+	return StreamClosePacket{}
+}

stanza/stream_management.go

@@ -3,12 +3,19 @@ package stanza
 import (
 	"encoding/xml"
 	"errors"
+	"sync"
 )
 
 const (
 	NSStreamManagement = "urn:xmpp:sm:3"
 )
 
+type SMEnable struct {
+	XMLName xml.Name `xml:"urn:xmpp:sm:3 enable"`
+	Max     *uint    `xml:"max,attr,omitempty"`
+	Resume  *bool    `xml:"resume,attr,omitempty"`
+}
+
 // Enabled as defined in Stream Management spec
 // Reference: https://xmpp.org/extensions/xep-0198.html#enable
 type SMEnabled struct {
@@ -23,6 +30,112 @@ func (SMEnabled) Name() string {
 	return "Stream Management: enabled"
 }
 
+type UnAckQueue struct {
+	Uslice []*UnAckedStz
+	sync.RWMutex
+}
+type UnAckedStz struct {
+	Id  int
+	Stz string
+}
+
+func NewUnAckQueue() *UnAckQueue {
+	return &UnAckQueue{
+		Uslice:  make([]*UnAckedStz, 0, 10), // Capacity is 0 to comply with "Push" implementation (so that no reachable element is nil)
+		RWMutex: sync.RWMutex{},
+	}
+}
+
+func (u *UnAckedStz) QueueableName() string {
+	return "Un-acknowledged stanza"
+}
+
+func (uaq *UnAckQueue) PeekN(n int) []Queueable {
+	if uaq == nil {
+		return nil
+	}
+	if n <= 0 {
+		return nil
+	}
+	if len(uaq.Uslice) < n {
+		n = len(uaq.Uslice)
+	}
+
+	if len(uaq.Uslice) == 0 {
+		return nil
+	}
+	var r []Queueable
+	for i := 0; i < n; i++ {
+		r = append(r, uaq.Uslice[i])
+	}
+	return r
+}
+
+// No guarantee regarding thread safety !
+func (uaq *UnAckQueue) Pop() Queueable {
+	if uaq == nil {
+		return nil
+	}
+	r := uaq.Peek()
+	if r != nil {
+		uaq.Uslice = uaq.Uslice[1:]
+	}
+	return r
+}
+
+// No guarantee regarding thread safety !
+func (uaq *UnAckQueue) PopN(n int) []Queueable {
+	if uaq == nil {
+		return nil
+	}
+	r := uaq.PeekN(n)
+	uaq.Uslice = uaq.Uslice[len(r):]
+	return r
+}
+
+func (uaq *UnAckQueue) Peek() Queueable {
+	if uaq == nil {
+		return nil
+	}
+	if len(uaq.Uslice) == 0 {
+		return nil
+	}
+	r := uaq.Uslice[0]
+	return r
+}
+
+func (uaq *UnAckQueue) Push(s Queueable) error {
+	if uaq == nil {
+		return nil
+	}
+	pushIdx := 1
+	if len(uaq.Uslice) != 0 {
+		pushIdx = uaq.Uslice[len(uaq.Uslice)-1].Id + 1
+	}
+
+	sStz, ok := s.(*UnAckedStz)
+	if !ok {
+		return errors.New("element in not compatible with this queue. expected an UnAckedStz")
+	}
+
+	e := UnAckedStz{
+		Id:  pushIdx,
+		Stz: sStz.Stz,
+	}
+
+	uaq.Uslice = append(uaq.Uslice, &e)
+
+	return nil
+}
+
+func (uaq *UnAckQueue) Empty() bool {
+	if uaq == nil {
+		return true
+	}
+	r := len(uaq.Uslice)
+	return r == 0
+}
+
 // Request as defined in Stream Management spec
 // Reference: https://xmpp.org/extensions/xep-0198.html#acking
 type SMRequest struct {
@@ -37,7 +150,7 @@ func (SMRequest) Name() string {
 // Reference: https://xmpp.org/extensions/xep-0198.html#acking
 type SMAnswer struct {
 	XMLName xml.Name `xml:"urn:xmpp:sm:3 a"`
-	H       uint     `xml:"h,attr,omitempty"`
+	H       uint     `xml:"h,attr"`
 }
 
 func (SMAnswer) Name() string {
@@ -49,24 +162,175 @@ func (SMAnswer) Name() string {
 type SMResumed struct {
 	XMLName xml.Name `xml:"urn:xmpp:sm:3 resumed"`
 	PrevId  string   `xml:"previd,attr,omitempty"`
-	H       uint     `xml:"h,attr,omitempty"`
+	H       *uint    `xml:"h,attr,omitempty"`
 }
 
 func (SMResumed) Name() string {
 	return "Stream Management: resumed"
 }
 
+// Resume as defined in Stream Management spec
+// Reference: https://xmpp.org/extensions/xep-0198.html#acking
+type SMResume struct {
+	XMLName xml.Name `xml:"urn:xmpp:sm:3 resume"`
+	PrevId  string   `xml:"previd,attr,omitempty"`
+	H       *uint    `xml:"h,attr,omitempty"`
+}
+
+func (SMResume) Name() string {
+	return "Stream Management: resume"
+}
+
 // Failed as defined in Stream Management spec
 // Reference: https://xmpp.org/extensions/xep-0198.html#acking
 type SMFailed struct {
 	XMLName xml.Name `xml:"urn:xmpp:sm:3 failed"`
-	// TODO: Handle decoding error cause (need custom parsing).
+	H       *uint    `xml:"h,attr,omitempty"`
+
+	StreamErrorGroup StanzaErrorGroup
 }
 
 func (SMFailed) Name() string {
 	return "Stream Management: failed"
 }
 
+func (smf *SMFailed) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	smf.XMLName = start.Name
+
+	// According to https://xmpp.org/rfcs/rfc3920.html#def we should have no attributes aside from the namespace
+	// which we don't use internally
+
+	// decode inner elements
+	for {
+		t, err := d.Token()
+		if err != nil {
+			return err
+		}
+
+		switch tt := t.(type) {
+
+		case xml.StartElement:
+			// Decode sub-elements
+			var err error
+			switch tt.Name.Local {
+			case "bad-format":
+				bf := BadFormat{}
+				err = d.DecodeElement(&bf, &tt)
+				smf.StreamErrorGroup = &bf
+			case "bad-namespace-prefix":
+				bnp := BadNamespacePrefix{}
+				err = d.DecodeElement(&bnp, &tt)
+				smf.StreamErrorGroup = &bnp
+			case "conflict":
+				c := Conflict{}
+				err = d.DecodeElement(&c, &tt)
+				smf.StreamErrorGroup = &c
+			case "connection-timeout":
+				ct := ConnectionTimeout{}
+				err = d.DecodeElement(&ct, &tt)
+				smf.StreamErrorGroup = &ct
+			case "host-gone":
+				hg := HostGone{}
+				err = d.DecodeElement(&hg, &tt)
+				smf.StreamErrorGroup = &hg
+			case "host-unknown":
+				hu := HostUnknown{}
+				err = d.DecodeElement(&hu, &tt)
+				smf.StreamErrorGroup = &hu
+			case "improper-addressing":
+				ia := ImproperAddressing{}
+				err = d.DecodeElement(&ia, &tt)
+				smf.StreamErrorGroup = &ia
+			case "internal-server-error":
+				ise := InternalServerError{}
+				err = d.DecodeElement(&ise, &tt)
+				smf.StreamErrorGroup = &ise
+			case "invalid-from":
+				ifrm := InvalidForm{}
+				err = d.DecodeElement(&ifrm, &tt)
+				smf.StreamErrorGroup = &ifrm
+			case "invalid-id":
+				id := InvalidId{}
+				err = d.DecodeElement(&id, &tt)
+				smf.StreamErrorGroup = &id
+			case "invalid-namespace":
+				ins := InvalidNamespace{}
+				err = d.DecodeElement(&ins, &tt)
+				smf.StreamErrorGroup = &ins
+			case "invalid-xml":
+				ix := InvalidXML{}
+				err = d.DecodeElement(&ix, &tt)
+				smf.StreamErrorGroup = &ix
+			case "not-authorized":
+				na := NotAuthorized{}
+				err = d.DecodeElement(&na, &tt)
+				smf.StreamErrorGroup = &na
+			case "not-well-formed":
+				nwf := NotWellFormed{}
+				err = d.DecodeElement(&nwf, &tt)
+				smf.StreamErrorGroup = &nwf
+			case "policy-violation":
+				pv := PolicyViolation{}
+				err = d.DecodeElement(&pv, &tt)
+				smf.StreamErrorGroup = &pv
+			case "remote-connection-failed":
+				rcf := RemoteConnectionFailed{}
+				err = d.DecodeElement(&rcf, &tt)
+				smf.StreamErrorGroup = &rcf
+			case "resource-constraint":
+				rc := ResourceConstraint{}
+				err = d.DecodeElement(&rc, &tt)
+				smf.StreamErrorGroup = &rc
+			case "restricted-xml":
+				rx := RestrictedXML{}
+				err = d.DecodeElement(&rx, &tt)
+				smf.StreamErrorGroup = &rx
+			case "see-other-host":
+				soh := SeeOtherHost{}
+				err = d.DecodeElement(&soh, &tt)
+				smf.StreamErrorGroup = &soh
+			case "system-shutdown":
+				ss := SystemShutdown{}
+				err = d.DecodeElement(&ss, &tt)
+				smf.StreamErrorGroup = &ss
+			case "undefined-condition":
+				uc := UndefinedCondition{}
+				err = d.DecodeElement(&uc, &tt)
+				smf.StreamErrorGroup = &uc
+			case "unexpected-request":
+				ur := UnexpectedRequest{}
+				err = d.DecodeElement(&ur, &tt)
+				smf.StreamErrorGroup = &ur
+			case "unsupported-encoding":
+				ue := UnsupportedEncoding{}
+				err = d.DecodeElement(&ue, &tt)
+				smf.StreamErrorGroup = &ue
+			case "unsupported-stanza-type":
+				ust := UnsupportedStanzaType{}
+				err = d.DecodeElement(&ust, &tt)
+				smf.StreamErrorGroup = &ust
+			case "unsupported-version":
+				uv := UnsupportedVersion{}
+				err = d.DecodeElement(&uv, &tt)
+				smf.StreamErrorGroup = &uv
+			case "xml-not-well-formed":
+				xnwf := XMLNotWellFormed{}
+				err = d.DecodeElement(&xnwf, &tt)
+				smf.StreamErrorGroup = &xnwf
+			default:
+				return errors.New("error is unknown")
+			}
+			if err != nil {
+				return err
+			}
+		case xml.EndElement:
+			if tt == start.End() {
+				return nil
+			}
+		}
+	}
+}
+
 type smDecoder struct{}
 
 var sm smDecoder
@@ -78,9 +342,11 @@ func (s smDecoder) decode(p *xml.Decoder, se xml.StartElement) (Packet, error) {
 		return s.decodeEnabled(p, se)
 	case "resumed":
 		return s.decodeResumed(p, se)
+	case "resume":
+		return s.decodeResume(p, se)
 	case "r":
 		return s.decodeRequest(p, se)
-	case "h":
+	case "a":
 		return s.decodeAnswer(p, se)
 	case "failed":
 		return s.decodeFailed(p, se)
@@ -102,6 +368,11 @@ func (smDecoder) decodeResumed(p *xml.Decoder, se xml.StartElement) (SMResumed,
 	return packet, err
 }
 
+func (smDecoder) decodeResume(p *xml.Decoder, se xml.StartElement) (SMResume, error) {
+	var packet SMResume
+	err := p.DecodeElement(&packet, &se)
+	return packet, err
+}
 func (smDecoder) decodeRequest(p *xml.Decoder, se xml.StartElement) (SMRequest, error) {
 	var packet SMRequest
 	err := p.DecodeElement(&packet, &se)