Problems with connecting to Facebook XMMP MD5-DIGEST

Question

I have tried all the things to connect Facebook with XMPP but i have faced only one error all the time which is :
SASL authentication failed using mechanism D

Answer 1

I solved this problem. I find solution that http://community.igniterealtime.org/thread/41080

Jerry Magill wrote this...

import java.io.IOException;
import java.util.HashMap;
import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.Sasl;
import org.jivesoftware.smack.SASLAuthentication;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.sasl.SASLMechanism;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.util.Base64;

public class MySASLDigestMD5Mechanism extends SASLMechanism
{
    public MySASLDigestMD5Mechanism(SASLAuthentication saslAuthentication)
    {
        super(saslAuthentication);
    }

    protected void authenticate()
        throws IOException, XMPPException
    {
        String mechanisms[] = {
            getName()
        };
        java.util.Map props = new HashMap();
        sc = Sasl.createSaslClient(mechanisms, null, "xmpp", hostname, props, this);
        super.authenticate();
    }

    public void authenticate(String username, String host, String password)
    throws IOException, XMPPException
    {
        authenticationId = username;
        this.password = password;
        hostname = host;
        String mechanisms[] = {
            getName()
        };
        java.util.Map props = new HashMap();
        sc = Sasl.createSaslClient(mechanisms, null, "xmpp", host, props, this);
        super.authenticate();
    }

    public void authenticate(String username, String host, CallbackHandler cbh)
        throws IOException, XMPPException
    {
        String mechanisms[] = {
            getName()
        };
        java.util.Map props = new HashMap();
        sc = Sasl.createSaslClient(mechanisms, null, "xmpp", host, props, cbh);
        super.authenticate();
    }

    protected String getName()
    {
        return "DIGEST-MD5";
    }

    public void challengeReceived(String challenge)
        throws IOException
    {
        //StringBuilder stanza = new StringBuilder();
        byte response[];
        if(challenge != null)
            response = sc.evaluateChallenge(Base64.decode(challenge));
        else
            //response = sc.evaluateChallenge(null);
            response = sc.evaluateChallenge(new byte[0]);
        //String authenticationText = "";
        Packet responseStanza;
        //if(response != null)
        //{
            //authenticationText = Base64.encodeBytes(response, 8);
            //if(authenticationText.equals(""))
                //authenticationText = "=";

        if (response == null){
            responseStanza = new Response();
        } else {
            responseStanza = new  Response(Base64.encodeBytes(response,Base64.DONT_BREAK_LINES));   
        }
        //}
        //stanza.append("");
        //stanza.append(authenticationText);
        //stanza.append("");
        //getSASLAuthentication().send(stanza.toString());
        getSASLAuthentication().send(responseStanza);
    }
}

It is then called thus from the JabberSmackAPI:

public void login(String userName, String password) throws XMPPException
{       
    SASLAuthentication.registerSASLMechanism("DIGEST-MD5",MySASLDigestMD5Mechanism. class);
    ConnectionConfiguration config = new ConnectionConfiguration("chat.facebook.com",5222);

    config.setSASLAuthenticationEnabled(true);
    config.setRosterLoadedAtLogin (true);

    connection = new XMPPConnection(config);
    connection.connect();
    connection.login(userName, password);
}