Code of voice chat(transmitting & recieving voice)

Question

hello this is a complete simple code of sending voice and recieving voice ..but it doe'snt run ...can any one check this..
//code for transmissting voice
import java.io.*;
import java.util.Vector;
import java.net.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.rtp.*;
public class SendVoice1 implements ControllerListener {
     private boolean realized = false;
     private boolean configured = false;
     Processor p;
     CaptureDeviceInfo info;
     public static void main(String [] args) {
          new SendVoice1();
     SendVoice1() {
          Vector v=CaptureDeviceManager.getDeviceList(new AudioFormat(AudioFormat.LINEAR,8000,8,1));
          if (v.size() > 0) {
          info = (CaptureDeviceInfo)v.elementAt(0);
     else {
          System.out.println("No Audio Device Exist");
          try {
               p = Manager.createProcessor(info.getLocator());
          } catch (IOException e) {
          System.out.println(e);
     } catch (NoProcessorException e) {
          System.out.println(e);
          p.addControllerListener(this);
          p.configure();
          while (! configured) {
               try {
                    Thread.currentThread().sleep(100L);;
               } catch (InterruptedException e){}          
          p.setContentDescriptor(new ContentDescriptor( ContentDescriptor.RAW));
     TrackControl track[] = p.getTrackControls();
     boolean encodingOk = false;
     for (int i = 0; i < track.length; i++) {
          if (!encodingOk && track[i] instanceof FormatControl) {
          if (((FormatControl)track).setFormat( new AudioFormat(AudioFormat.ULAW_RTP, 8000,8,1)) == null) {
               track[i].setEnabled(false);
          else {
               encodingOk = true;           
          else { 
               track[i].setEnabled(false);
          if (encodingOk){
               p.realize();
               while (! realized) {
                    try {
                         Thread.currentThread().sleep(100L);;
                    } catch (InterruptedException e) {}
               DataSource ds=null;
               try {
          ds = p.getDataOutput();
          }catch (NotRealizedError e) {
               System.out.println(e);
               try {
          String url= "rtp://127.0.0.1:1500/audio/1";
          MediaLocator m = new MediaLocator(url);
               DataSink d = Manager.createDataSink(ds, m);
               d.open();
          d.start();
                    p.start();
          } catch (Exception e) {
          System.out.println(e);
     public synchronized void controllerUpdate(ControllerEvent evt) {
          if (evt instanceof RealizeCompleteEvent) {
               realized = true;
          else if (evt instanceof ConfigureCompleteEvent) {
               configured = true;
          else if (evt instanceof EndOfMediaEvent) {
               System.exit(0);
          else {
               // System.out.println(evt.toString());
//code for Recieving voice
public class ReVoice1 implements ControllerListener {
     private boolean realized = false;
     private boolean configured = false;
     Player p;
     public static void main(String args[]){
          new ReVoice1();
     ReVoice1(){
          String url= "rtp://192.168.0.92:1500/audio/1";
     MediaLocator mrl= new MediaLocator(url);
          if (mrl == null) {
               System.out.println("Can't build MRL for RTP");
     // Create a player for this rtp session
     try {
          p = Manager.createPlayer(mrl);
     } catch (NoPlayerException e) {
          System.out.println("Error:" + e);
     } catch (MalformedURLException e) {
          System.out.println("Error:" + e);
     } catch (IOException e) {
          System.out.println("Error:" + e);
     if (p != null) {
          if (this.p == null) {
          this.p = p;
          p.addControllerListener(this);
          p.realize();
     public synchronized void controllerUpdate(ControllerEvent evt) {
          if (evt instanceof RealizeCompleteEvent) {
               realized = true;
          else if (evt instanceof ConfigureCompleteEvent) {
               configured = true;
          else if (evt instanceof EndOfMediaEvent) {
               System.exit(0);
          else {
               // System.out.println(evt.toString());
and message comes after runnimg sending file is.
streams is[Lcom.sun.media.multiplexer.RawBufferMux$RawBufferSourceStream;@4ac00
c : 1
sink: setOutputLocator rtp://127.0.0.1:1500/audio/1

Answer 1

Hie there:
Did you get the solution for this error?
I am getting the same error. Not many references.
-Thanks
_DG