server client connection set up for streaming

[supriya prasad]

I am trying to set up a server client network .Server will be able to stream live audio captured from a radio receiver connected to its line in port to multiple clients over the network.

Gstreamer is used for setting up the RTSP(Real Time Streaming Protocol) based server.And at the client side i used VLC Media player to open the input network stream by specifying the IP adress & default port no of server.

C code which i used for setting up the streaming server goes like:

#include <gst/gst.h>
#include <gst/rtsp-server/rtsp-server.h>
 
/* define this if you want the resource to only be available when using
* user/admin as the password */
 
#undef WITH_AUTH
 
/* this timeout is periodically run to clean up the expired sessions from the
 * pool. This needs to be run explicitly currently but might be done
* automatically as part of the mainloop. */
 
static gboolean
 
timeout (GstRTSPServer * server, gboolean ignored)
{
  GstRTSPSessionPool *pool;
 
  pool = gst_rtsp_server_get_session_pool (server);
 
  gst_rtsp_session_pool_cleanup (pool);
 
  g_object_unref (pool)
 
  return TRUE;
}
 
Int
 
main (int argc, char *argv[])
 
{
 
  GMainLoop *loop;
 
  GstRTSPServer *server;
 
  GstRTSPMediaMapping *mapping;
 
  GstRTSPMediaFactory *factory;
 
#ifdef WITH_AUTH
 
  GstRTSPAuth *auth;
 
  gchar *basic;
 
#endif
 
  gst_init (&argc, &argv);
 
  loop = g_main_loop_new (NULL, FALSE);
 
  /* create a server instance */
 
  server = gst_rtsp_server_new ();
 
  /* get the mapping for this server, every server has a default mapper object
  * that be used to map uri mount points to media factories */
 
  mapping = gst_rtsp_server_get_media_mapping (server);
 
#ifdef WITH_AUTH
 
  /* make a new authentication manager. it can be added to control access to all
 * the factories on the server or on individual factories. */
 
  auth = gst_rtsp_auth_new ();
 
  basic = gst_rtsp_auth_make_basic ("user", "admin");
 
  gst_rtsp_auth_set_basic (auth, basic); 
 
  g_free (basic);
 
  /* configure in the server */
 
  gst_rtsp_server_set_auth (server, auth);
 
#endif
 
  /* make a media factory for a test stream. The default media factory can use
 
   * gst-launch syntax to create pipelines. 
 
   * any launch line works as long as it contains    elements named pay%d. Each
 
   * element with pay%d names will be a stream */
 
  factory = gst_rtsp_media_factory_new ();
 
  gst_rtsp_media_factory_set_launch (factory, "( "
 
      "videotestsrc ! video/x-raw-yuv,width=352,height=288,framerate=15/1 ! "
 
      "x264enc ! rtph264pay name=pay0 pt=96 "
 
      "audiotestsrc ! audio/x-raw-int,rate=8000 ! "
 
      "alawenc ! rtppcmapay name=pay1 pt=97 " ")");
 
 
  /* attach the test factory to the /test url */
 
  gst_rtsp_media_mapping_add_factory (mapping, "/test", factory);
 
  /* don't need the ref to the mapper anymore */
 
  g_object_unref (mapping);
 
  /* attach the server to the default maincontext */
 
  if (gst_rtsp_server_attach (server, NULL) == 0)
 
    goto failed;
 
  /* add a timeout for the session cleanup */
 
  g_timeout_add_seconds (2, (GSourceFunc) timeout, server);
 
  /* start serving, this never stops */
 
  g_main_loop_run (loop);
 
  return 0;
 
  /* ERRORS */
 
failed:
  {
 
    g_print ("failed to attach the server\n");
 
    return -1;
 
  }
 

When tested with local host my client VLC was able to open the input stream successfully..and it did work well

But when tried with SERVER and CLIENT on different machines ,vlc displayed the following message:

connection was not established
VLC unable to open the MRL

I dont know why it is not working when tried with server and client on different machines.Help me answer these questions as i need to demonstrate streaming between a server and client computer by connecting using a LAN cable,as a part of my project .

1)Is this a connection failure? if yes ,how can i solve it?
actually i established the connection using a LAN CABLE ,and proxy was set on both sides identifiying one as server and other as client.

2)Do i need to modify the code?

3)Where do you think the problem is ? client side or server side?

Please some one help me with this........as i need to complete this project by next week

[sicarie]

Can you ping the proxy? Can you simulate the connection from both the client and the server - ensuring information can travel both ways?

[supriya prasad]

ya,when i ping the proxy,it show that a connection exists,but when i try to open the input stream using vlc at the client side,it says that the connection is not being established

[sicarie]

A ping wouldn't show a connection exists - it shows a path exists. Connections are usually shown through netstat output.

So both client/server can ping the proxy? Are there intermediate nodes?

Have you attempted to telnet to the ports that are expected on both the proxy and client/server? That will show that the ports are open and listening for the program to make a connection