[Live-devel] rtsp client and server in the same app

[Yedidia Amit]

I think its beacuse both are trying to use the same port (8554)
 

Regards,


Amit Yedidia

Elbit System Ltd.

Email: amit.yedidia at elbitsystems.com

Tel: 972-4-8318905

----------------------------------------------------------

 


________________________________

	From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Mat Laibowitz
	Sent: Sunday, October 26, 2008 11:53 AM
	To: live-devel at ns.live555.com; mlaibow.davinci at gmail.com
	Subject: Re: [Live-devel] rtsp client and server in the same app
	
	
	A little more info. It is not the SDP request that fails, it is
the OPTIONS request that returns NULL.
	I added a check fro null after the getOptionsRequest as shown
below. And it returns NULL when called in the same program as starting a
RTSP server.
	So the actual error message is the same, but it is from the
OPTIONS request and not the SDP request.
	-mat
	
	Created Client: 0xc3b98

	Sending request: OPTIONS rtsp://18.85.45.131:8554/videoStream
RTSP/1.0

	CSeq: 1

	User-Agent: spinner_video_control (LIVE555 Streaming Media
v2008.09.02)

	

	

	RTSP "OPTIONS" request failed:Failed to read response: Cannot
assign requested address

	Sending request: DESCRIBE rtsp://18.85.45.131:8554/videoStream
RTSP/1.0

	CSeq: 2

	Accept: application/sdp

	User-Agent: spinner_video_control (LIVE555 Streaming Media
v2008.09.02)

	                                      
	-------------------------------------------------------

	

	Failed to get a SDP description from URL
"rtsp://18.85.45.131:8554/videoStream": Failed to read response: Cannot
assign requested address

	/
	
	  if (sendOptionsRequest) {
	    // Begin by sending an "OPTIONS" command:
	    char* optionsResponse
	      = getOptionsResponse(ourClient, rtspUrl, username,
password);
	    if (sendOptionsRequestOnly) {
	      if (optionsResponse == NULL) {
	    *env << clientProtocolName << " \"OPTIONS\" request failed:
"
	         << env->getResultMsg() << "\n";
	      } else {
	    *env << clientProtocolName << " \"OPTIONS\" request
returned: "
	         << optionsResponse << "\n";
	      }
	      return shutdown(FAILURE);
	    }
	    if(optionsResponse == NULL) {
	      *env << clientProtocolName << " \"OPTIONS\" request
failed:" << env->getResultMsg()  << "\n";
	    } else {
	     *env << clientProtocolName << " \"OPTIONS\" request
returned: "
	         << optionsResponse << "\n";   
	    }
	    delete[] optionsResponse;
	  }
	
	
	
	On Sun, Oct 26, 2008 at 5:20 AM, Mat Laibowitz
<mlaibow.davinci at gmail.com> wrote:
	

		So I have made it pretty far referencing the complete
source code and the test programs.
		But I am a bit stuck on one issue.
		I have built a RTSP server with a custom FrameSource
that talks to my hardware for encoding.
		This works great, it uses the background read handling
and can be received by openRTSP or mplayer or vlc or quicktime without
fail.
		
		I have also created a custom client based on openRTSP
that talks to my hardware to decode the stream and display it on the
framebuffer or record it to a file. This also works great and when the
two programs are on different nodes the client can receive from the
server.
		
		If I put them both on the same node, they also work,
provided that I turn off the connection to the hardware enc/dec in one
of the programs (the client will just record the mpeg4 stream to file
and not decode it and display it).
		This is because of a limit of the platform that I can
only access the hardware codec from one process/program.
		
		So I am trying to combine the client and the server in
one application.
		The code is essentially the same, it just uses one
environment and one call to the task loop.
		
		The RTSP server starts up fine and I can receive the
video anywhere including with a version of the same application with the
server and hardware decoding turned off.
		
		However, the client always fails when started from the
same program as the server.
		The error message is:
		Failed to get a SDP description from URL
"rtsp://18.85.45.131:8554/videoStream":

		 Failed to read response: Cannot assign requested
address
		
		I am guessing that the client somehow is trying to use
some resource that is already in use by the server. But I am not sure
what that can be. Any help would be greatly appreciated. I thought it
was a port or sockets problem at first, but one is a client and one is a
server, and they both work if they are in separate programs on the same
device.
		
		Thanks for a great system, I am quite happy to have my
devices streaming video between them, I just need to solve this one
integration issue and it will be great.
		
		-mat
		



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