SIP problem port

Question

Hi,
I'm trying to send a REGISTER Sip Message to Asterisk with credentials (following the instructions from Javadoc of JSR180). The code is the follow:
try {
// open listener in application specific port 5080
sipNotifier = (SipConnectionNotifier)Connector.open("sip:5080");
// build the contact URI
contact = new String("sip:emanuele@"+sipNotifier.getLocalAddress()+":"+sipNotifier.getLocalPort()+";transport=UDP");
// open client connection to the SIP registrar in this case "host.com"
sipConnection = (SipClientConnection) Connector.open("sip:89.89.89.89");
sipConnection.setListener(this);
// initialize REGISTER with appropriate headers
sipConnection.initRequest("REGISTER", null);
sipConnection.setCredentials("ciccio", "ciccio", "mydomain.com");
sipConnection.setHeader("From", "sip:[email protected]");
sipConnection.setHeader("To", "sip:[email protected]");
sipConnection.setHeader("Expires", "600");
sipConnection.setHeader("Contact", "<"+contact+">");
sipConnection.send();
boolean handled = false;
int scode = 0;
while(!handled) {
// wait max 30 secs for response
sipConnection.receive(30000);
scode = sipConnection.getStatusCode();
switch(scode)
case 200:
// handle OK response
handled = true;
break;
default:
// handle other responses
handled = true;
// wait maximum 15 seconds for response
} catch ( IOException e ) {
e.printStackTrace( );
voipmidlet.addMessage( "Error: " + e.getMessage( ) );
finally
if (sipConnection != null)
try {
sipConnection.close();
catch ( IOException e ) {
e.printStackTrace();
Analyzing the traffic I can see the server receives the first register message, answers with unauthorized but my j2me app doesn't catch this response.
The server respond on the same port that is the source port the client send message from and that port is chosen randomly at the moment of the send and it's different from the port my listener is where.
Does anyone know a solution?
Thanks
Emanuele

Answer 1

Sorry I have the lines:
sipConnection.initRequest("REGISTER", sipNotifier);
and not
sipConnection.initRequest("REGISTER", null);
in my code....the code in the previous post has that error but also with sipNotifier it doesn't work due the same problem.