Only Register when 3G is ON

Hi am i trying to register the client on asterisk server.

I have modify the sipDroid code and for now i only want to register with the 
server. 

This is message sent from client (modified code)

REGISTER sip:192.168.a.a SIP/2.0
Via: SIP/2.0/UDP 10.0.2.15:50927;rport;branch=z9hG4bK87975
Max-Forwards: 70
To: <sip:xxx@192.168.0.3>
From: <sip:xxx@192.168.0.3>;tag=z9hG4bK37789030
Call-ID: 860871844385@10.0.2.15
CSeq: 1 REGISTER
Contact: <sip:xxx@10.0.2.15:50927;transport=udp>
Expires: 3600
User-Agent: Sipdroid/1.0/GALAXY_Tab
Content-Length: 0

This is the exact message which sipdroid code send 

//Create message re (modified by mandrajg)
        Message req = MessageFactory.createRegisterRequest(sip_provider,
                target, target, new NameAddress(user_profile.contact_url), qvalue, icsi);

        req.setExpiresHeader(new ExpiresHeader(String.valueOf(expire_time)));

        //create and fill the authentication params this is done when
        //the UA has been challenged by the registrar or intermediate UA
        if (next_nonce != null) 
        {
            AuthorizationHeader ah = new AuthorizationHeader("Digest");

            ah.addUsernameParam(username);
            ah.addRealmParam(realm);
            ah.addNonceParam(next_nonce);
            ah.addUriParam(req.getRequestLine().getAddress().toString());
            ah.addQopParam(qop);
            String response = (new DigestAuthentication(SipMethods.REGISTER,
                    ah, null, passwd)).getResponse();
            ah.addResponseParam(response);
            req.setAuthorizationHeader(ah);
        }

        if (expire_time > 0)
        {
            printLog("Registering contact " + contact + " (it expires in "
                    + expire_time + " secs)", LogLevel.HIGH);
        }
        else
        {
            printLog("Unregistering contact " + contact, LogLevel.HIGH);
        }

        t = new TransactionClient(sip_provider, req, this, 30000);
        t.request();

But it only register with the server when 3G is ON why?

Any body please help me...
Original issue reported on code.google.com by peswani....@gmail.com on 22 May 2012 at 2:44
Merged into: #328
vaibhav3002 / sipdroid

Only Register when 3G is ON #1046
