Cannot open local port whatever

Hi,
I've just downloaded AVTransmit2.java and AVReceive2.java from this website's JMF tutorial and am having a little trouble getting both classes to communicate.
I have two Command Prompt windows open and I'm trying something like
java AVTransmit2 file:C:\Whatever.au ipaddress(my machine's IP) 4000
java AVReceive2 ipaddress(my machine's IP)/4000
Whatever process I run first, the second process then tells me that it cannot open local port 4000, even though this is the port that both processes are meant to communicate on. Should I be using two different machines to communicate?
Sorry to bug everybody with this problem, it's probably been posted before but some advice would be appreciated.
Thanks

Err, well, if they are both acting as servers, that's right. If you are running them on the same machine, then the first one takes port 4000 and the second one can't use it. I would think they would take 2 sets of IP and port, one for it's server port, one for it to connect to the other side...
however, I wouldn't think that the transmitter app would be using a server port. You should be starting the receiver first.
Or something else is using that port. Another receiver you started but didn't start, maybe? Some other app? It shouldn't matter what port you use. Try something else (4001, 4002, etc).

Similar Messages

Can't open local port

Hello all
I would be very grateful for some help with this problem,I haven;t been able so solve and i have spend a lot of time on it
I have written my own client RTSP code,from this i can set the client ports i want to recieve and send RTCP and recieve RTP,and can read in the server ports
So i have something like 157.190.181.36 60972 60973 client
157.190.181.36 6972 6973 server
To handle RTP i have used RTP socket player or RX and may other RTP reciver options,as in the java solutions etc ,so that i can recieve RTP and create a player
When i run them i get the same eror from all error can't open local port
Further information
I am on a LAN,but hav tried my set up disconnected from the LAN through a hub set up
I have tried opening the ports before callled the RTP players i.e
on the client side
DatagramSocket RTPsocket3= new DatagramSocket(60972);
DatagramSocket RTPsocket4= new DatagramSocket(60973);
Through sniffers
I know the RTSP messages are OK
I recive an ICMP message destination unreachable
I am connecting to darwin streaming server and i can connect to this and play through apple quicktime player or JM studioTHANKS IN ADVANCE!

Hey...
I'm having a similar problem, because i'm developing an application that its serving RTP audio context streams. So the application would transmit a playlist of files over RTP, and it works fine for one file, but when i try to give it a new file, i always get the exception "Can�t open door: ...". This error occurs on the line that is marked with *****.
I'm creating a processor for each file i want to transmit, for the same port and same IP address, so when the first file ends i close the processor and create a new one with the same properties, but with a diferent file...
I really nead this to work, so if someone could help me on this it would be really appreciated... Thanks in advance...
My code for creating the transmitter is like this:
private String createProcessor(){
     if (locator == null) return My_Dictionary.TRANSMIT_LOCATOR;
          try{
          ds = javax.media.Manager.createDataSource(locator);
          }catch (Exception e){
          return My_Dictionary.TRANSMIT_DATASOURCE;
          try{
          processor = javax.media.Manager.createProcessor(ds);
          }catch (NoProcessorException npe){
          return My_Dictionary.TRANSMIT_PROCESSOR;
          }catch (IOException ioe){
               return My_Dictionary.TRANSMIT_IO_PROCESSOR;
          boolean result = waitForState(processor,Processor.Configured);
          if (result == false) return My_Dictionary.TRANSMIT_PROCESSOR_CONFIG;
          TrackControl [ ] tracks = processor.getTrackControls();
          if (tracks == null || tracks.length < 1) return My_Dictionary.TRANSMIT_TRACKS;
          ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.RAW_RTP);
          processor.setContentDescriptor(cd);
          Format supported[];
          Format chosen;
          boolean atLeastOneTrack = false;
          for (int i = 0; i < tracks.length; i++){
          if (tracks.isEnabled()){
                    supported = tracks[i].getSupportedFormats();
                    if (supported.length > 0){
                         for (int j = 0; j < supported.length; j++){
                              if (supported[j] instanceof AudioFormat){
                                   if (supported[j].matches(Transmit.audioformat)){
                                        chosen = supported[j];
                                   tracks[i].setFormat(chosen);
                                   atLeastOneTrack = true;
                                   System.out.println("Track " + i + " is set to transmit as: " + chosen);
                    }else tracks[i].setEnabled(false);
          }else tracks[i].setEnabled(false);
          if (!atLeastOneTrack) return My_Dictionary.TRANSMIT_ANY_TRACKS;
          result = waitForState(processor,Controller.Realized);
          if (result == false) return My_Dictionary.TRANSMIT_PROCESSOR_REALIZE;
          dataOutput = processor.getDataOutput();
          return null;
private static String createTransmitter(){
          PushBufferDataSource pbds = (PushBufferDataSource)dataOutput;
          PushBufferStream pbss[] = pbds.getStreams();
          rtpMgrs = new RTPManager[pbss.length];
          SessionAddress localAddr, destAddr;
          InetAddress ipAddr;
          SendStream sendStream;
          int port;
          for (int i = 0; i < pbss.length; i++){
          try{
                    rtpMgrs[i] = RTPManager.newInstance();
                    port = portBase + 2*i;
                    ipAddr = InetAddress.getByName(ipAddress);
                    localAddr = new SessionAddress(InetAddress.getLocalHost(),port);
                    destAddr = new SessionAddress(ipAddr,port);
                    rtpMgrs[i].initialize(localAddr); *****
                    rtpMgrs[i].addTarget(destAddr);
                    System.out.println("Created RTP session: " + ipAddress + "/" + port);
                    sendStream = rtpMgrs[i].createSendStream(dataOutput,i);
                    sendStream.start();
          }catch (Exception e){
                    return e.getMessage();
          return null;

RTP Cannot open local data port

Hello,
I'm about to learn JMF. So I tried the example code from the sun JMF documentation(example10-1; code is appended).
The code compiles without errors but when I run it, I alway get the following error:
streams is [Lcom.sun.media.multiplexer.RawBufferMux$RawBufferSourceStream;@b9b538 : 1
sink: setOutputLocator rtp://192.168.0.6:49150/audio/1
java.io.IOException: Can't open local data port: 4800
        at com.sun.media.datasink.rtp.Handler.open(Handler.java:139)
        at Send.<init>(Send.java:60)
        at Send.main(Send.java:71)
What does that mean and what causes that kind of exception?
Thanks in advance.
MfG
Michael
****Code starts here****
class Send {
   public Send() {
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      System.out.println("DEBUG: CaptureDeviceManager returned " + devices.size() + " devices");
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      Processor p = null;
      if(devices.size() > 0)
      di = (CaptureDeviceInfo) devices.elementAt(0);
      else
      System.exit(-1);
      System.out.println("Found: " + di.toString());
      try {
      p = Manager.createProcessor(di.getLocator());
      } catch(Exception e) {
     e.printStackTrace();
     System.exit(-1);
p.configure();
TrackControl tracks[] = p.getTrackControls();
p.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW));
boolean encodingOk=false;
for(int i=0; i < tracks.length; i++) {
     if(!encodingOk && tracks[i] instanceof FormatControl) {
     if( ( (FormatControl)tracks[i] ).setFormat(new AudioFormat(AudioFormat.GSM_RTP, 8000, 16, 1))==null )
     tracks.setEnabled(false);
     encodingOk = true;
     else
     tracks[i].setEnabled(false);
} //for
if(encodingOk) {
     p.realize();
     DataSource source = null;
     try { Thread.sleep(1000); } catch(InterruptedException e){}
     try {
     source = p.getDataOutput();
     } catch(NotRealizedError e) {
     System.out.println("*** ERROR: Cannot realize");
     //System.exit(-1);
     try {
     String url = "rtp://192.168.0.6:49150/audio/1";
     System.out.println(url);
     MediaLocator m = new MediaLocator(url);
     DataSink sink = Manager.createDataSink(source, m);
     sink.open();
     sink.start();
     } catch(Exception e) {
     System.out.println("*** ERROR: ");
     e.printStackTrace();
     System.exit(-1);
} // if
public static void main(String[] args) {
new Send();

Hello,
I tried to change the port number to 22222, 66666 and 49150. With the same effekt. I found out that when I run the program for the first time after a reboot I get these errors:
javax.media.NotConfiguredError: getTrackControls cannot be called before configured
at com.sun.media.ProcessEngine.getTrackControls(ProcessEngine.java:285)
at com.sun.media.MediaProcessor.getTrackControls(MediaProcessor.java:107)
at Send.<init>(Send.java:29)
at Send.main(Send.java:71)
Exception in thread "main" javax.media.NotConfiguredError: getTrackControls cannot be called before configured
at com.sun.media.ProcessEngine.getTrackControls(ProcessEngine.java:285)
at com.sun.media.MediaProcessor.getTrackControls(MediaProcessor.java:107)
at Send.<init>(Send.java:29)
at Send.main(Send.java:71)
I have to quit the program with Ctrl-c. The next time I run it I get the IOException as described above :( .
MfG
Michael

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use the flash security panel to put the folder that contains your swf's embedding html in the trusted zone:
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Hi,
I'm trying to connect to two webcams simultaneously in the order:
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player1 = Manager.createPlayer(inputLocator1)
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Did you log out after moving com.apple.LaunchServices.plist?
If you did, proceed as below.
Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
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Remember, steps 1-5 are all drag-and-drop or copy-and-paste, whichever you prefer — no typing, except your password. Also remember to post the output.
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We have requirement of using ESB toolkit and transforming incoming xml file to edi format. So, we are using ItinerarySelectReceiveXML pipeline for receiving the input from the input location and "EDISend" pipeline for transforming it into EDI and
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Sorry if I can't explain well...
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- Morsolo

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Richard Aichner (Ikester)

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Hi All,
I am getting the below the error while comminicating to FTP server.
Delivery of the message to the application using connection File_http://sap.com/xi/XI/System failed, due to: com.sap.aii.af.ra.ms.api.RecoverableException: Possible PASV port theft, cannot open data connection.: com.sap.aii.adapter.file.ftp.FTPEx: 425 Possible PASV port theft, cannot open data connection..
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Thanks & regards,
Kartikeya

Hi
The reason for the error is
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    - Data Connection
Changing active/passive mode settings might help (as a common solution).
Problem can occur due to below settings,
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   - FTP client/ Firewall on its side (affects Active Mode)
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When Passive, the SERVER opens a dynamic port for DC on which it would be listening for the client to bind its source port
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The error could be because of other reasons also, but I suspect that the dynamic port is out range of the ports opened at your FTP server firewall.
So now I think you are one step forward to fix the issue
Regards
Vishnu

Cannot open local port whatever

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