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Merge pull request #155 from remicorniere/Stream_Management_Patch

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Stream Management
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remicorniere 2020-03-10 15:33:59 +00:00 committed by GitHub
commit 1e92089f96
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28 changed files with 1901 additions and 156 deletions
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16
CHANGELOG.md
View File

@ -1,5 +1,21 @@
# 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

3
_examples/go.sum
View File

@ -99,7 +99,9 @@ github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/9
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/processone/mpg123 v1.0.0 h1:o2WOyGZRM255or1Zc/LtF/jARn51B+9aQl72Qace0GA=
github.com/processone/mpg123 v1.0.0/go.mod h1:X/FeL+h8vD1bYsG9tIWV3M2c4qNTZOficyvPVBP08go=
github.com/processone/soundcloud v1.0.0 h1:/+i6+Yveb7Y6IFGDSkesYI+HddblzcRTQClazzVHxoE=
github.com/processone/soundcloud v1.0.0/go.mod h1:kDLeWpkRtN3C8kIReQdxoiRi92P9xR6yW6qLOJnNWfY=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDft0ttaMvbicHlPoso=
@ -155,6 +157,7 @@ golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73r
golang.org/x/net v0.0.0-20190110200230-915654e7eabc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=

2
_examples/xmpp_echo/xmpp_echo.go
View File

@ -28,7 +28,7 @@ func main() {
router := xmpp.NewRouter()
router.HandleFunc("message", handleMessage)
client, err := xmpp.NewClient(config, router, errorHandler)
client, err := xmpp.NewClient(&config, router, errorHandler)
if err != nil {
log.Fatalf("%+v", err)
}

2
_examples/xmpp_jukebox/xmpp_jukebox.go
View File

@ -54,7 +54,7 @@ func main() {
handleIQ(s, p, player)
})
client, err := xmpp.NewClient(config, router, errorHandler)
client, err := xmpp.NewClient(&config, router, errorHandler)
if err != nil {
log.Fatalf("%+v", err)
}

2
_examples/xmpp_oauth2/xmpp_oauth2.go
View File

@ -28,7 +28,7 @@ func main() {
router := xmpp.NewRouter()
router.HandleFunc("message", handleMessage)
client, err := xmpp.NewClient(config, router, errorHandler)
client, err := xmpp.NewClient(&config, router, errorHandler)
if err != nil {
log.Fatalf("%+v", err)
}

2
_examples/xmpp_pubsub_client/xmpp_ps_client.go
View File

@ -38,7 +38,7 @@ func main() {
log.Println("Received a message ! => \n" + string(data))
})
client, err := xmpp.NewClient(config, router, func(err error) { log.Println(err) })
client, err := xmpp.NewClient(&config, router, func(err error) { log.Println(err) })
if err != nil {
log.Fatalf("%+v", err)
}

2
_examples/xmpp_websocket/xmpp_websocket.go
View File

@ -26,7 +26,7 @@ func main() {
router := xmpp.NewRouter()
router.HandleFunc("message", handleMessage)
client, err := xmpp.NewClient(config, router, errorHandler)
client, err := xmpp.NewClient(&config, router, errorHandler)
if err != nil {
log.Fatalf("%+v", err)
}

13
auth.go
View File

@ -60,10 +60,21 @@ func authPlain(socket io.ReadWriter, decoder *xml.Decoder, mech string, user str
raw := "\x00" + user + "\x00" + secret
enc := make([]byte, base64.StdEncoding.EncodedLen(len(raw)))
base64.StdEncoding.Encode(enc, []byte(raw))
_, err := fmt.Fprintf(socket, "<auth xmlns='%s' mechanism='%s'>%s</auth>", stanza.NSSASL, mech, 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)

159
client.go
View File

@ -6,6 +6,7 @@ import (
"errors"
"io"
"net"
"sync"
"time"
"gosrc.io/xmpp/stanza"
@ -14,15 +15,36 @@ 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 (
InitialPresence = "<presence/>"
StateDisconnected ConnState = iota
StateConnected
StateResuming
StateSessionEstablished
StateStreamError
StatePermanentError
@ -31,7 +53,7 @@ const (
// 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
@ -44,7 +66,16 @@ 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
}
@ -53,29 +84,35 @@ type SMState struct {
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
}
// 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 = state
em.CurrentState.setState(state)
if em.Handler != nil {
em.Handler(Event{State: em.CurrentState})
}
}
// 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 = StateDisconnected
em.CurrentState.setState(StateDisconnected)
if em.Handler != nil {
em.Handler(Event{State: em.CurrentState, SMState: state})
}
}
// 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 = StateStreamError
em.CurrentState.setState(StateStreamError)
if em.Handler != nil {
em.Handler(Event{State: em.CurrentState, StreamError: error, Description: desc})
}
@ -90,7 +127,7 @@ var ErrCanOnlySendGetOrSetIq = errors.New("SendIQ can only send get and set IQ s
// 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
transport Transport
@ -100,6 +137,12 @@ type Client struct {
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
}
/*
@ -109,7 +152,7 @@ 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 domain part of the Jid.
// Default the port to 5222.
func NewClient(config Config, r *Router, errorHandler func(error)) (c *Client, err error) {
func NewClient(config *Config, r *Router, errorHandler func(error)) (c *Client, err error) {
if config.KeepaliveInterval == 0 {
config.KeepaliveInterval = time.Second * 30
}
@ -169,26 +212,45 @@ func NewClient(config Config, r *Router, errorHandler func(error)) (c *Client, e
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)
err := c.connect()
if 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
}
}
// Resume attempts resuming a Stream Managed session, based on the provided stream management
// state.
func (c *Client) Resume(state SMState) error {
var err error
// Start the keepalive go routine
keepaliveQuit := make(chan struct{})
go keepalive(c.transport, c.config.KeepaliveInterval, keepaliveQuit)
// Start the receiver go routine
go c.recv(keepaliveQuit)
return err
}
// 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
}
c.updateState(StateConnected)
// Client is ok, we now open XMPP session
if c.Session, err = NewSession(c.transport, c.config, state); err != nil {
// 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 {
@ -212,22 +274,26 @@ func (c *Client) Resume(state SMState) error {
c.Session.StreamId = streamId
c.updateState(StateSessionEstablished)
// Start the keepalive go routine
keepaliveQuit := make(chan struct{})
go keepalive(c.transport, c.config.KeepaliveInterval, keepaliveQuit)
// Start the receiver go routine
state = c.Session.SMState
go c.recv(state, keepaliveQuit)
// 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 ?
err = c.sendWithWriter(c.transport, []byte(InitialPresence))
return err
}
// 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 retrival
// 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()
@ -252,6 +318,15 @@ func (c *Client) Send(packet stanza.Packet) error {
return errors.New("cannot marshal packet " + err.Error())
}
// 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)
}
@ -284,6 +359,12 @@ func (c *Client) SendRaw(packet string) error {
return errors.New("client is not connected")
}
// 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))
}
@ -297,13 +378,13 @@ 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{}) {
func (c *Client) recv(keepaliveQuit chan<- struct{}) {
for {
val, err := stanza.NextPacket(c.transport.GetDecoder())
if err != nil {
c.ErrorHandler(err)
close(keepaliveQuit)
c.disconnected(state)
c.disconnected(c.Session.SMState)
return
}
@ -321,7 +402,7 @@ func (c *Client) recv(state SMState, keepaliveQuit chan<- struct{}) {
answer := stanza.SMAnswer{XMLName: xml.Name{
Space: stanza.NSStreamManagement,
Local: "a",
}, H: state.Inbound}
}, H: c.Session.SMState.Inbound}
err = c.Send(answer)
if err != nil {
c.ErrorHandler(err)
@ -332,7 +413,7 @@ func (c *Client) recv(state SMState, keepaliveQuit chan<- struct{}) {
c.transport.ReceivedStreamClose()
return
default:
state.Inbound++
c.Session.SMState.Inbound++
}
// Do normal route processing in a go-routine so we can immediately
// start receiving other stanzas. This also allows route handlers to

589
client_internal_test.go
View File

@ -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")
}
}

182
client_test.go
View File

@ -20,18 +20,20 @@ const (
func TestEventManager(t *testing.T) {
mgr := EventManager{}
mgr.updateState(StateConnected)
if mgr.CurrentState != StateConnected {
mgr.updateState(StateResuming)
if mgr.CurrentState.getState() != StateResuming {
t.Fatal("CurrentState not updated by updateState()")
}
mgr.disconnected(SMState{})
if mgr.CurrentState != StateDisconnected {
if mgr.CurrentState.getState() != StateDisconnected {
t.Fatalf("CurrentState not reset by disconnected()")
}
mgr.streamError(ErrTLSNotSupported.Error(), "")
if mgr.CurrentState != StateStreamError {
if mgr.CurrentState.getState() != StateStreamError {
t.Fatalf("CurrentState not set by streamError()")
}
}
@ -53,7 +55,7 @@ func TestClient_Connect(t *testing.T) {
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("connect create XMPP client: %s", err)
}
@ -84,7 +86,7 @@ func TestClient_NoInsecure(t *testing.T) {
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("cannot create XMPP client: %s", err)
}
@ -117,7 +119,7 @@ func TestClient_FeaturesTracking(t *testing.T) {
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("cannot create XMPP client: %s", err)
}
@ -147,7 +149,7 @@ func TestClient_RFC3921Session(t *testing.T) {
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("connect create XMPP client: %s", err)
}
@ -366,7 +368,7 @@ func TestClient_DisconnectStreamManager(t *testing.T) {
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("cannot create XMPP client: %s", err)
}
@ -386,6 +388,162 @@ func TestClient_DisconnectStreamManager(t *testing.T) {
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.
@ -449,7 +607,7 @@ func checkClientOpenStream(t *testing.T, sc *ServerConn) {
var token xml.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) {
@ -464,6 +622,7 @@ func checkClientOpenStream(t *testing.T, sc *ServerConn) {
}
return
}
}
}
@ -472,7 +631,6 @@ func mockClientConnection(t *testing.T, serverHandler func(*testing.T, *ServerCo
testServerAddress := fmt.Sprintf("%s:%d", testClientDomain, port)
mock.Start(t, testServerAddress, serverHandler)
config := Config{
TransportConfiguration: TransportConfiguration{
Address: testServerAddress,
@ -484,7 +642,7 @@ func mockClientConnection(t *testing.T, serverHandler func(*testing.T, *ServerCo
var client *Client
var err error
router := NewRouter()
if client, err = NewClient(config, router, clientDefaultErrorHandler); err != nil {
if client, err = NewClient(&config, router, clientDefaultErrorHandler); err != nil {
t.Errorf("connect create XMPP client: %s", err)
}

2
cmd/fluuxmpp/send.go
View File

@ -32,7 +32,7 @@ func sendxmpp(cmd *cobra.Command, args []string) {
msgText := args[1]
var err error
client, err := xmpp.NewClient(xmpp.Config{
client, err := xmpp.NewClient(&xmpp.Config{
TransportConfiguration: xmpp.TransportConfiguration{
Address: viper.GetString("addr"),
},

9
cmd/go.sum
View File

@ -65,6 +65,7 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/pprof v0.0.0-20190908185732-236ed259b199/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
@ -92,6 +93,7 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY=
github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/magiconair/properties v1.8.1 h1:ZC2Vc7/ZFkGmsVC9KvOjumD+G5lXy2RtTKyzRKO2BQ4=
github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/mailru/easyjson v0.0.0-20190403194419-1ea4449da983/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
@ -148,10 +150,12 @@ github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb6
github.com/spf13/pflag v1.0.1/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s=
github.com/spf13/viper v1.4.0 h1:yXHLWeravcrgGyFSyCgdYpXQ9dR9c/WED3pg1RhxqEU=
github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
github.com/spf13/viper v1.6.1 h1:VPZzIkznI1YhVMRi6vNFLHSwhnhReBfgTxIPccpfdZk=
github.com/spf13/viper v1.6.1/go.mod h1:t3iDnF5Jlj76alVNuyFBk5oUMCvsrkbvZK0WQdfDi5k=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@ -159,6 +163,7 @@ github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/subosito/gotenv v1.2.0 h1:Slr1R9HxAlEKefgq5jn9U+DnETlIUa6HfgEzj0g5d7s=
github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
github.com/twitchyliquid64/golang-asm v0.0.0-20190126203739-365674df15fc/go.mod h1:NoCfSFWosfqMqmmD7hApkirIK9ozpHjxRnRxs1l413A=
@ -207,6 +212,7 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20190618155005-516e3c20635f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190927073244-c990c680b611 h1:q9u40nxWT5zRClI/uU9dHCiYGottAg6Nzz4YUQyHxdA=
golang.org/x/sys v0.0.0-20190927073244-c990c680b611/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@ -231,6 +237,7 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
@ -238,9 +245,11 @@ gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bl
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gotest.tools v2.1.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
gotest.tools/gotestsum v0.3.5/go.mod h1:Mnf3e5FUzXbkCfynWBGOwLssY7gTQgCHObK9tMpAriY=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
mvdan.cc/sh v2.6.4+incompatible/go.mod h1:IeeQbZq+x2SUGBensq/jge5lLQbS3XT2ktyp3wrt4x8=
nhooyr.io/websocket v1.6.5 h1:8TzpkldRfefda5JST+CnOH135bzVPz5uzfn/AF+gVKg=
nhooyr.io/websocket v1.6.5/go.mod h1:F259lAzPRAH0htX2y3ehpJe09ih1aSHN7udWki1defY=

8
component.go
View File

@ -60,11 +60,10 @@ func NewComponent(opts ComponentOptions, r *Router, errorHandler func(error)) (*
// 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 {
func (c *Component) Resume() error {
var err error
var streamId string
if c.ComponentOptions.TransportConfiguration.Domain == "" {
@ -73,16 +72,13 @@ func (c *Component) Resume(sm SMState) error {
c.transport, err = NewComponentTransport(c.ComponentOptions.TransportConfiguration)
if err != nil {
c.updateState(StatePermanentError)
return NewConnError(err, true)
}
if streamId, err = c.transport.Connect(); err != nil {
c.updateState(StatePermanentError)
return NewConnError(err, true)
}
c.updateState(StateConnected)
// Authentication
if err := c.sendWithWriter(c.transport, []byte(fmt.Sprintf("<handshake>%s</handshake>", c.handshake(streamId)))); err != nil {

62
component_test.go
View File

@ -38,6 +38,8 @@ func TestHandshake(t *testing.T) {
// 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
@ -57,11 +59,10 @@ func TestGenerateHandshakeId(t *testing.T) {
// 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)
return
serverDone <- struct{}{}
}
// Init mock server
@ -92,14 +93,45 @@ func TestGenerateHandshakeId(t *testing.T) {
}
// Try connecting, and storing the resulting streamID in a map.
go func() {
m := make(map[string]bool)
for range uuidsArray {
streamId, _ := c.transport.Connect()
m[c.handshake(streamId)] = true
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.
@ -121,10 +153,11 @@ func TestDecoder(t *testing.T) {
// Tests sending an IQ to the server, and getting the response
func TestSendIq(t *testing.T) {
done := make(chan struct{})
serverDone := make(chan struct{})
clientDone := make(chan struct{})
h := func(t *testing.T, sc *ServerConn) {
handlerForComponentIQSend(t, sc)
done <- struct{}{}
serverDone <- struct{}{}
}
//Connecting to a mock server, initialized with given port and handler function
@ -145,24 +178,23 @@ func TestSendIq(t *testing.T) {
}
c.ErrorHandler = errorHandler
go func() {
var res chan stanza.IQ
res, _ = c.SendIQ(ctx, iqReq)
select {
case <-res:
case err := <-errChan:
t.Errorf(err.Error())
case <-time.After(defaultChannelTimeout):
t.Errorf("Failed to receive response, to sent IQ, from mock server")
t.Fatalf(err.Error())
}
clientDone <- struct{}{}
}()
waitForEntity(t, clientDone)
waitForEntity(t, serverDone)
select {
case <-done:
m.Stop()
case <-time.After(defaultChannelTimeout):
t.Errorf("The mock server failed to finish its job !")
}
cancel()
m.Stop()
}
// Checking that error handling is done properly client side when an invalid IQ is sent and the server responds in kind.

11
config.go
View File

@ -21,4 +21,15 @@ type Config struct {
// 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
// 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
}

38
router.go
View File

@ -42,6 +42,17 @@ func NewRouter() *Router {
// 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()
@ -70,6 +81,33 @@ func (r *Router) route(s Sender, p stanza.Packet) {
}
}
// 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"},

179
session.go
View File

@ -1,10 +1,11 @@
package xmpp
import (
"encoding/xml"
"errors"
"fmt"
"gosrc.io/xmpp/stanza"
"strconv"
)
type Session struct {
@ -23,44 +24,67 @@ type Session struct {
err error
}
func NewSession(transport Transport, o Config, state SMState) (*Session, error) {
s := new(Session)
s.transport = transport
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(o)
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.err != nil {
return nil, NewConnError(s.err, true)
}
if !transport.IsSecure() {
s.startTlsIfSupported(o)
if !c.transport.IsSecure() {
s.startTlsIfSupported(c.config)
}
if !transport.IsSecure() && !o.Insecure {
if !c.transport.IsSecure() && !c.config.Insecure {
err := fmt.Errorf("failed to negotiate TLS session : %s", s.err)
return nil, NewConnError(err, true)
}
if s.TlsEnabled {
s.reset(o)
s.reset()
}
// auth
s.auth(o)
s.reset(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) {
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 s, s.err
}
@ -70,19 +94,20 @@ func (s *Session) PacketId() string {
return fmt.Sprintf("%x", s.lastPacketId)
}
func (s *Session) init(o Config) {
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(o Config) {
func (s *Session) reset() {
if s.StreamId, s.err = s.transport.StartStream(); s.err != nil {
return
}
s.Features = s.open(o.parsedJid.Domain)
s.Features = s.extractStreamFeatures()
}
func (s *Session) open(domain string) (f stanza.StreamFeatures) {
func (s *Session) extractStreamFeatures() (f stanza.StreamFeatures) {
// extract stream features
if s.err = s.transport.GetDecoder().Decode(&f); s.err != nil {
s.err = errors.New("stream open decode features: " + s.err.Error())
@ -90,7 +115,7 @@ func (s *Session) open(domain string) (f stanza.StreamFeatures) {
return
}
func (s *Session) startTlsIfSupported(o Config) {
func (s *Session) startTlsIfSupported(o *Config) {
if s.err != nil {
return
}
@ -125,7 +150,7 @@ func (s *Session) startTlsIfSupported(o Config) {
}
}
func (s *Session) auth(o Config) {
func (s *Session) auth(o *Config) {
if s.err != nil {
return
}
@ -134,7 +159,7 @@ func (s *Session) auth(o Config) {
}
// 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
}
@ -142,9 +167,16 @@ func (s *Session) resume(o Config) bool {
return false
}
fmt.Fprintf(s.transport, "<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.transport.GetDecoder())
if s.err == nil {
@ -165,20 +197,48 @@ 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.transport, "<iq type='set' id='%s'><bind xmlns='%s'><resource>%s</resource></bind></iq>",
s.PacketId(), stanza.NSBind, resource)
} else {
fmt.Fprintf(s.transport, "<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.transport.GetDecoder().Decode(&iq); s.err != nil {
s.err = errors.New("error decoding iq bind result: " + s.err.Error())
@ -197,7 +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
}
@ -205,7 +265,29 @@ 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.transport, "<iq type='set' id='%s'><session xmlns='%s'/></iq>", s.PacketId(), stanza.NSSession)
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
@ -214,28 +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.transport, "<enable xmlns='%s' resume='true'/>", stanza.NSStreamManagement)
var packet stanza.Packet
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
}

34
stanza/fifo_queue.go Normal file
View File

@ -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
}

4
stanza/sasl_auth.go
View File

@ -94,7 +94,7 @@ func (b *Bind) GetSet() *ResultSet {
// 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
Optional *struct{} // If element does exist, it mean we are not required to open session
// Result sets
ResultSet *ResultSet `xml:"set,omitempty"`
}
@ -109,7 +109,7 @@ func (s *StreamSession) GetSet() *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

4
stanza/sasl_auth_test.go
View File

@ -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 {
@ -32,7 +32,7 @@ func TestSessionIQ(t *testing.T) {
if err != nil {
t.Fatalf("failed to create IQ: %v", err)
}
iq.Payload = &stanza.StreamSession{XMLName: xml.Name{Local: "session"}, Optional: true}
iq.Payload = &stanza.StreamSession{XMLName: xml.Name{Local: "session"}, Optional: &struct{}{}}
data, err := xml.Marshal(iq)
if err != nil {

171
stanza/stanza_errors.go Normal file
View File

@ -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" }

4
stanza/stream_features.go
View File

@ -118,6 +118,10 @@ 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

279
stanza/stream_management.go
View File

@ -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)

226
stanza/stream_management_test.go Normal file
View File

@ -0,0 +1,226 @@
package stanza_test
import (
"gosrc.io/xmpp/stanza"
"math/rand"
"reflect"
"testing"
"time"
)
func TestPopEmptyQueue(t *testing.T) {
var uaq stanza.UnAckQueue
popped := uaq.Pop()
if popped != nil {
t.Fatalf("queue is empty but something was popped !")
}
}
func TestPushUnack(t *testing.T) {
uaq := initUnAckQueue()
toPush := stanza.UnAckedStz{
Id: 3,
Stz: `<iq type='submit'
from='confucius@scholars.lit/home'
to='registrar.scholars.lit'
id='kj3b157n'
xml:lang='en'>
<query xmlns='jabber:iq:register'>
<username>confucius</username>
<first>Qui</first>
<last>Kong</last>
</query>
</iq>`,
}
err := uaq.Push(&toPush)
if err != nil {
t.Fatalf("could not push element to the queue : %v", err)
}
if len(uaq.Uslice) != 4 {
t.Fatalf("push to the non-acked queue failed")
}
for i := 0; i < 4; i++ {
if uaq.Uslice[i].Id != i+1 {
t.Fatalf("indexes were not updated correctly. Expected %d got %d", i, uaq.Uslice[i].Id)
}
}
// Check that the queue is a fifo : popped element should not be the one we just pushed.
popped := uaq.Pop()
poppedElt, ok := popped.(*stanza.UnAckedStz)
if !ok {
t.Fatalf("popped element is not a *stanza.UnAckedStz")
}
if reflect.DeepEqual(*poppedElt, toPush) {
t.Fatalf("pushed element is at the top of the fifo queue when it should be at the bottom")
}
}
func TestPeekUnack(t *testing.T) {
uaq := initUnAckQueue()
expectedPeek := stanza.UnAckedStz{
Id: 1,
Stz: `<iq type='set'
from='romeo@montague.net/home'
to='characters.shakespeare.lit'
id='search2'
xml:lang='en'>
<query xmlns='jabber:iq:search'>
<last>Capulet</last>
</query>
</iq>`,
}
if !reflect.DeepEqual(expectedPeek, *uaq.Uslice[0]) {
t.Fatalf("peek failed to return the correct stanza")
}
}
func TestPeekNUnack(t *testing.T) {
uaq := initUnAckQueue()
initLen := len(uaq.Uslice)
randPop := rand.Int31n(int32(initLen))
peeked := uaq.PeekN(int(randPop))
if len(uaq.Uslice) != initLen {
t.Fatalf("queue length changed whith peek n operation : had %d found %d after peek", initLen, len(uaq.Uslice))
}
if len(peeked) != int(randPop) {
t.Fatalf("did not peek the correct number of element from queue. Expected %d got %d", randPop, len(peeked))
}
}
func TestPeekNUnackTooLong(t *testing.T) {
uaq := initUnAckQueue()
initLen := len(uaq.Uslice)
// Have a random number of elements to peek that's greater than the queue size
randPop := rand.Int31n(int32(initLen)) + 1 + int32(initLen)
peeked := uaq.PeekN(int(randPop))
if len(uaq.Uslice) != initLen {
t.Fatalf("total length changed whith peek n operation : had %d found %d after pop", initLen, len(uaq.Uslice))
}
if len(peeked) != initLen {
t.Fatalf("did not peek the correct number of element from queue. Expected %d got %d", initLen, len(peeked))
}
}
func TestPopNUnack(t *testing.T) {
uaq := initUnAckQueue()
initLen := len(uaq.Uslice)
randPop := rand.Int31n(int32(initLen))
popped := uaq.PopN(int(randPop))
if len(uaq.Uslice)+len(popped) != initLen {
t.Fatalf("total length changed whith pop n operation : had %d found %d after pop", initLen, len(uaq.Uslice)+len(popped))
}
for _, elt := range popped {
for _, oldElt := range uaq.Uslice {
if reflect.DeepEqual(elt, oldElt) {
t.Fatalf("pop n operation duplicated some elements")
}
}
}
}
func TestPopNUnackTooLong(t *testing.T) {
uaq := initUnAckQueue()
initLen := len(uaq.Uslice)
// Have a random number of elements to pop that's greater than the queue size
randPop := rand.Int31n(int32(initLen)) + 1 + int32(initLen)
popped := uaq.PopN(int(randPop))
if len(uaq.Uslice)+len(popped) != initLen {
t.Fatalf("total length changed whith pop n operation : had %d found %d after pop", initLen, len(uaq.Uslice)+len(popped))
}
for _, elt := range popped {
for _, oldElt := range uaq.Uslice {
if reflect.DeepEqual(elt, oldElt) {
t.Fatalf("pop n operation duplicated some elements")
}
}
}
}
func TestPopUnack(t *testing.T) {
uaq := initUnAckQueue()
initLen := len(uaq.Uslice)
popped := uaq.Pop()
if len(uaq.Uslice)+1 != initLen {
t.Fatalf("total length changed whith pop operation : had %d found %d after pop", initLen, len(uaq.Uslice)+1)
}
for _, oldElt := range uaq.Uslice {
if reflect.DeepEqual(popped, oldElt) {
t.Fatalf("pop n operation duplicated some elements")
}
}
}
func initUnAckQueue() stanza.UnAckQueue {
q := []*stanza.UnAckedStz{
{
Id: 1,
Stz: `<iq type='set'
from='romeo@montague.net/home'
to='characters.shakespeare.lit'
id='search2'
xml:lang='en'>
<query xmlns='jabber:iq:search'>
<last>Capulet</last>
</query>
</iq>`,
},
{Id: 2,
Stz: `<iq type='get'
from='juliet@capulet.com/balcony'
to='characters.shakespeare.lit'
id='search3'
xml:lang='en'>
<query xmlns='jabber:iq:search'/>
</iq>`},
{Id: 3,
Stz: `<iq type='set'
from='juliet@capulet.com/balcony'
to='characters.shakespeare.lit'
id='search4'
xml:lang='en'>
<query xmlns='jabber:iq:search'>
<x xmlns='jabber:x:data' type='submit'>
<field type='hidden' var='FORM_TYPE'>
<value>jabber:iq:search</value>
</field>
<field var='x-gender'>
<value>male</value>
</field>
</x>
</query>
</iq>`},
}
return stanza.UnAckQueue{Uslice: q}
}
func init() {
rand.Seed(time.Now().UTC().UnixNano())
}

17
stream_manager.go
View File

@ -25,7 +25,7 @@ import (
// set callback and trigger reconnection.
type StreamClient interface {
Connect() error
Resume(state SMState) error
Resume() error
Send(packet stanza.Packet) error
SendIQ(ctx context.Context, iq *stanza.IQ) (chan stanza.IQ, error)
SendRaw(packet string) error
@ -75,9 +75,7 @@ func (sm *StreamManager) Run() error {
}
handler := func(e Event) error {
switch e.State {
case StateConnected:
sm.Metrics.setConnectTime()
switch e.State.state {
case StateSessionEstablished:
sm.Metrics.setLoginTime()
case StateDisconnected:
@ -128,7 +126,7 @@ func (sm *StreamManager) resume(state SMState) error {
// TODO: Make it possible to define logger to log disconnect and reconnection attempts
sm.Metrics = initMetrics()
if err = sm.client.Resume(state); err != nil {
if err = sm.client.Resume(); err != nil {
var actualErr ConnError
if xerrors.As(err, &actualErr) {
if actualErr.Permanent {
@ -152,11 +150,6 @@ func (sm *StreamManager) resume(state SMState) error {
type Metrics struct {
startTime time.Time
// ConnectTime returns the duration between client initiation of the TCP/IP
// connection to the server and actual TCP/IP session establishment.
// This time includes DNS resolution and can be slightly higher if the DNS
// resolution result was not in cache.
ConnectTime time.Duration
// LoginTime returns the between client initiation of the TCP/IP
// connection to the server and the return of the login result.
// This includes ConnectTime, but also XMPP level protocol negotiation
@ -172,10 +165,6 @@ func initMetrics() *Metrics {
}
}
func (m *Metrics) setConnectTime() {
m.ConnectTime = time.Since(m.startTime)
}
func (m *Metrics) setLoginTime() {
m.LoginTime = time.Since(m.startTime)
}

4
tcp_server_mock.go
View File

@ -36,6 +36,10 @@ const (
testClientRawPort
testClientIqPort
testClientIqFailPort
testClientPostConnectHook
// Client internal tests
testClientStreamManagement
)
// ClientHandler is passed by the test client to provide custom behaviour to

1
xmpp_transport.go
View File

@ -24,6 +24,7 @@ type XMPPTransport struct {
readWriter io.ReadWriter
logFile io.Writer
isSecure bool
// Used to close TCP connection when a stream close message is received from the server
closeChan chan stanza.StreamClosePacket
}