Java SIP client like present in android

Question

My requirement is to do a SIP registration using java servlet and then make an audio call. In android i have found simple way to do Android Supporting SIP however i am not able use same android code in java since SIP manager class is present in android.net packages. What should i use for my users to do SIP registration in java servlet.

below is android code

if (sipManager == null) {
 sipManager = SipManager.newInstance(this);
}
SipProfile.Builder builder = null;
try {
 builder = new SipProfile.Builder("7001", "XXX.XXX.X.XXX");
 builder.setPassword("XXX");
 sipProfile = builder.build();
 Intent i = new Intent();
 i.setAction("android.SipDemo.INCOMING_CALL");
 PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, Intent.FILL_IN_DATA);
 sipManager.open(sipProfile, pi, null);

 sipManager.setRegistrationListener(sipProfile.getUriString(), new SipRegistrationListener() {
  public void onRegistering(String localProfileUri) {

  }
  public void onRegistrationDone(String localProfileUri, long expiryTime) {

  }
  public void onRegistrationFailed(String localProfileUri, int errorCode,
   String errorMessage) {


  }
 });
} catch (ParseException pe) {
 pe.printStackTrace();

} catch (SipException se) {
 se.printStackTrace();

}

Answer 1

It is not clear from your question how do you envisage this to work. Servlets are server side, so if SIP messages are initiated from the server but I suspect what you really want is to initiate a SIP session, followed by an Audio stream established with some real-time streaming protocol from the client.

There are Java APIs for SIP, and Sun / Oracle had a standard API for integrating with telecoms networks using SIP and IMS: https://www.oracle.com/technetwork/java/introduction-jain-sip-090386.html Not sure if they are still maintained.

However, I suspect that this is not what you really need. Maybe you should look at this client based WebRTC and SIP client:

http://www.doubango.org/sipml5/

Your JSP would serve this Javascript, which allows the user to initiate a SIP session and establish the Audio call.

From their documentation, it seems to be straightforward:

  SIPml.init(
     function(e){
         var stack =  new SIPml.Stack({realm: 'example.org', impi: 'bob', impu: 'sip:bob@example.org', password: 'mysecret',
                            events_listener: { events: 'started', listener: function(e){
                                        var callSession = stack.newSession('call-audiovideo', {
                                                video_local: document.getElementById('video-local'),
                                                video_remote: document.getElementById('video-remote'),
                                                audio_remote: document.getElementById('audio-remote')
                                            });
                                        callSession.call('alice');
                                    } 
                                }
                        });
                        stack.start();
                    }
            );