Hello,

            I am currently working on an rtsp client application on an
embedded system and have been trying to use libcurl version 7.21.7.

            The problem that I have is that whilst I can receive the
options, describe, setup and teardown responses I cannot receive any
data packets even though they are clearly being sent from the server
(captured in wireshark). Am I correct in saying that once the following
sequence has been sent data should arrive in the desired function
'rtsp_write' or am I missing something critical.

curl_easy_set_opt(curl, CURLOPT_NOPROGRESS, 1L);

curl_easy_set_opt(curl, CURLOPT_VERBOSE, 1L);

curl_easy_set_opt(curl, CURLOPT_URL, url);

curl_easy_set_opt(curl, CURLOPT_WRITEHEADDER, stdout);

// options

curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);

curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS);

curl_easy_perform(curl);

// describe

curl_easy_set_opt(curl, CURLOPT_WRITEDATA, sdp);

curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE);

curl_easy_perform(curl);

curl_easy_set_opt(curl, CURLOPT_WRITEDATA, stdout);

// setup the stream

curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);

curl_easy_set_opt(curl, CURLOPT_RTSP_TRANSPORT, transport);

curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_SETUP);

curl_easy_perform(curl);

// play the stream

curl_easy_set_opt(curl, CURLOPT_RTSP_STREAM_URI, uri);

curl_easy_set_opt(curl, CURLOPT_RTSP_RANGE, NULL);

curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_PLAY);

curl_easy_perform(curl);

// setup receive function for data

curl_easy_set_opt(curl, CURLOPT_WRITEFUNCTION, rtsp_write);

curl_easy_set_opt(curl, CURLOPT_WRITEDATA, NULL);

// process loop

while(!ctx->terminate)

{

            SDL_Delay(10);

}

// end stream

curl_easy_set_opt(curl, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_TEARDOWN);

curl_easy_perform(curl);

Kind Regards

Michael Dale

Building Block Video Ltd
17 Apex Park
Hailsham
East Sussex,
BN27 3JU
England

Tel:+44(0)1323 842727
Fax:+44(0)1323 842728

 <mailto:michaeld_at_bbvcctv.com> mailto:michaeld_at_bbvcctv.com

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Received on 2011-07-11