Fixed jukebox example and added a README.md

_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

@@ -49,7 +49,7 @@ func main() {
 			handleMessage(s, p, player)
 		})
 	router.NewRoute().
-		Packet("message").
+		Packet("iq").
 		HandlerFunc(func(s xmpp.Sender, p stanza.Packet) {
 			handleIQ(s, p, player)
 		})
@@ -139,7 +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