Receiveing data over RTP doesn't work

Question

First of all , excuse my english.....it really sucks
Second of all , this is my problem:
I modified the JMStudio source to suit my needs.....leaving just what i needed.The application works......it sends data just fine but it does't receives it.I tried to rewrite the function thousand of times in different modes but it doesn't work.
This is my source code :
          private void openRtp () {
OpenRtpDialog dlgOpenRtp;
String strAction;
String strAddress;
String strPort;
String strTtl;
RTPManager           receptie=RTPManager.newInstance();
InetAddress      adresaip=null;
int                    port,ttl;
ReceiveStreamListener receptiestr = null;
ReceiveStreamEvent     x = null;
dlgOpenRtp = new OpenRtpDialog ( this, cfgJMApps );
     dlgOpenRtp.isVisible ();
strAction = dlgOpenRtp.getAction ();
if ( !strAction.equals(JMDialog.ACTION_OPEN) )
return;
strAddress = dlgOpenRtp.getAddress();
strPort = dlgOpenRtp.getPort ();
strTtl = dlgOpenRtp.getTtl ();
               try {
                    adresaip=InetAddress.getByName(strAddress);
               } catch (UnknownHostException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
port=Integer.valueOf(strPort).intValue();
ttl=Integer.valueOf(strTtl).intValue();
SessionAddress adresa=new SessionAddress(adresaip,port,ttl);
     try {
                    receptie.initialize(adresa);
               } catch (InvalidSessionAddressException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
               } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
if ( receptie == null ) {
MessageDialog.createErrorDialog ( this, JMFI18N.getResource("jmstudio.error.sessionmngr.create") );
return;
receptie.addReceiveStreamListener(receptiestr);
receptiestr.update(x);
update(x);
// the rest will be done when we get NewReceiveStreamEvent
updateMenu ();
pls tell me what i do wrong cause it's driving me insane......the function from the JMStudio works in the original but doesn't work in my version so it makes me think that the problem is from somewhere else.
For further assistance i'll be watching this thread closely.
Thank you for your help.
Yours gratefully,
Sorin

Answer 1

I'm just going to point you in the direction of some sample code...
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVReceive.html]
Go look at their "initialize" function and figure out what the sample code is doing that you aren't...
And remember, it could simply be a matter of doing something wrong with IP address... You can't use 127.0.0.1 for RTP transmissions, and you can't broadcast to the same computer if your transmit code is binding the destination port as the transmission port. IE, if you tell it to broadcast to the remote computer on port 2600, and it uses the local port 2600 to broadcast on...then you won't be able to read from port 2600 on the local computer.