I have an account at Jabber.org and I'm seeing the same stack-trace when I try to connect. I looked through the source code and there seems to be an error in SASLMechanism.java. Right before line 152, where it tries to encode the response byte-array, it receives the response from evaluating the challenge byte-array. According to Java's documentation on SaslClient.evaluateChallenge, returning a null byte-array is legal if the challenge succeeded. A null byte array passed into Base64.encodeBytes causes it to crash since it tries to get a length attribute (Base64.java:636) of the input array.  I was able to make it work by applying the attached patch to SASLMechanism.java and putting the compiled class into an existing smack.jar file.

Great. The solution works.

Tested without proxy for Gtalk as wel as Jabber.org.

Thanx dimitar

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Can't get in from behind proxyl!!

Getting following exception:

not-allowed(405) Connection must be encrypted.
    at org.jivesoftware.smack.NonSASLAuthentication.authenticate(NonSASLAuthentication .java:78)
    at org.jivesoftware.smack.SASLAuthentication.authenticate(SASLAuthentication.java: 352)
    at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:395)
    at ClientTestProxy.main(ClientTestProxy.java:36)

it really worked:)

I'm using the latest smack code from SVN (as of last Friday, May 14, 2010) and I'm unable to get connected to Jabber.org using exactly the code fragment in the post above (with only the username and password changed).  The code works for connecting to GoogleTalk, but not Jabber.org.  I get an exception on the login call, returning the classic SASL authentication PLAIN failed:  invalid-authzid.  I've decoded the BASE-64 and it looks correct as far as I can see.

Has something changed between the 3.1.0 release and the current code that may have broken this?

(Note that I've checked to make sure that Psi and Spark clients are able to connect to jabber.org using the same credentials.)

Anyone have any idea what is going on?

After hours of trial & error, I finally found a way to make all my gtalk accounts work with asmack (3.1.0) !

Problem was, that only some of my google accounts worked, while others didn't (wrong password/id exception)

Some Accounts work when using "gmail.com" as ServiceName, while others only work when using "googlemail.com" !

--> Workaround: Try to connect with "gmail.com" first, if an exception is thrown, try to connect again with "googlemail.com"

[...]

mConConfig = new ConnectionConfiguration("talk.google.com", "5222", "gmail.com");

mConConfig.setSASLAuthenticationEnabled(false);

XMPPConnection xmppCon = new XMPPConnection(mConConfig);

try{
                xmppCon.connect();
}catch(XMPPException e){
                return;
}
try{
                xmppCon.login(mUsername, mPassword, mResource);
}catch(XMPPException e){

                if(mService.equalsIgnoreCase("gmail.com")){
                    mConConfig.setServiceName("googlemail.com");
                    connect();
                    return;
                }else if(mService.equalsIgnoreCase("googlemail.com")){
                    mConConfig.setServiceName("gmail.com");
                    connect();
                    return;
}