[JDEV] Jabber-client:unable to authenticate user

[Rajeev]

Hi all

I'm working on a jabber client using java. I've already registered a user on
the
jabberd-1.4.2 server. Now if i try to authenticate the user by sending the
following xml programatically

<iq id='auth' type='set'>
  <query xmlns='jabber:iq:auth'>
    <username>userName</username>
    <password>userPassword</password>
    <resource>some IP address</resource>
  </query>
</iq>

I"m receiving the following response from the server:

<?xml version='1.0'?><stream:stream
xmlns:stream='http://etherx.jabber.org/streams' id='3ED4669B'
xmlns='jabber:client'><stream:error>Invalid
Namespace</stream:error></stream:stream>

Can someone tell me the solution to this problem?

Thanking in advance
Rajeev