Why isn't my custom IQ provider working?

Smack Smack Dev
1

I’m trying to set up some custom IQ packet handling, using Smack as part of an Android project. My client code sends and receives chat messages with no problem, but I haven’t managed to get it to respond to IQ messages – every time I send one to the client, it gets bounced back as ‘feature-not-implemented’. I’ve read the Provider Architecture document, and quite a lot of source code on the net, but I must be doing something wrong. I’m new to Smack, and kind of a noob with Java, so it may well be something obvious.

Here’s a message I’m sending to the client (using another custom client on the desktop, via a localhost instance of Openfire):

<iq to=“user@myserver/android” from=“user@myserver/CTest” type=“get” id=“query8”>

<query xmlns=“mynamespace:iq:contacts”/>

</iq>

And here’s what comes back:

<iq id=“query8” to=“user@myserver/CTest” from=“user@myserver/android” type=“error”><error code=“501” type=“CANCEL”><feature-not-implemented xmlns=“urn:ietf:params:xml:ns:xmpp-stanzas”/></error></iq>

Here’s the relevant chunk of code, which gets called after the XMPP login:

public void setConnection (XMPPConnection connection) {
         this.connection = connection;
         if (connection != null) {
              // Add a packet listener to get chat messages sent to us
              //  -- deleted -- (works fine)               // add IQ provider for ContactQuery
              ProviderManager providerManager = ProviderManager.getInstance();
              providerManager.addIQProvider("query", "mynamespace:iq:contacts", ContactQuery.class);           // add packet listener for ContactQuery
          connection.addPacketListener(new PacketListener() {
                   public void processPacket(Packet p) {
                        ContactQuery ep = (ContactQuery)p;
                        Log.i("MyApp", "Receive ContactQuery ");
                   }}, new PacketTypeFilter(ContactQuery.class));
          }
  }

The debugger confirms that my class ContactQuery is getting added to the list of iqProvider (as <query/><mynamespace:iq:contacts/>=class com.mydomain.mobile.demo.ContactQuery). I’m not sure what to look at to determine where things go wrong.

Any suggestions?

Thanks for your help!