From f3218c4afa0df46b9f3819b06c913a1cf9eb0952 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?CORNIERE=20R=C3=A9mi?= <remi.corniere@pm.me>
Date: Tue, 14 Jan 2020 19:12:54 +0100
Subject: [PATCH] PubSub example

---
 .../xmpp_pubsub_client/xmpp_ps_client.go      | 182 ++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 _examples/xmpp_pubsub_client/xmpp_ps_client.go

diff --git a/_examples/xmpp_pubsub_client/xmpp_ps_client.go b/_examples/xmpp_pubsub_client/xmpp_ps_client.go
new file mode 100644
index 0000000..972b94d
--- /dev/null
+++ b/_examples/xmpp_pubsub_client/xmpp_ps_client.go
@@ -0,0 +1,182 @@
+package main
+
+import (
+	"context"
+	"encoding/xml"
+	"fmt"
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+	"log"
+	"time"
+)
+
+const (
+	userJID       = "testuser2@localhost"
+	serverAddress = "localhost:5222"
+	nodeName      = "lel_node"
+	serviceName   = "pubsub.localhost"
+)
+
+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)
+			fmt.Println("Received a publication ! => \n" + string(data))
+		})
+
+	client, err := xmpp.NewClient(config, router, func(err error) { fmt.Println(err) })
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// ==========================
+	// Client connection
+	err = client.Connect()
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// ==========================
+	// Create a node
+	rqCreate, err := stanza.NewCreateNode(serviceName, nodeName)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	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.Error != nil {
+					if respCr.Error.Reason != "conflict" {
+						log.Fatalf("%+v", respCr.Error.Text)
+					}
+					fmt.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")
+			}
+		}
+	}
+
+	// ====================================
+	// Now let's subscribe to this node :
+	rqSubscribe, _ := 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:
+			fmt.Println("Subscribed to the service")
+		case <-time.After(100 * time.Millisecond):
+			cancel()
+			log.Fatal("No iq response was received in time")
+		}
+	}
+
+	// ==========================
+	// Publish to that node
+	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:
+			fmt.Println("Published item to the service")
+		case <-time.After(100 * time.Millisecond):
+			cancel()
+			log.Fatal("No iq response was received in time")
+		}
+	}
+
+	// =============================
+	// Let's purge the node now :
+	purgeRq, _ := stanza.NewPurgeAllItems(serviceName, nodeName)
+	client.SendIQ(ctx, purgeRq)
+
+	cancel()
+}