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Posted By

rowntreerob on 08/16/11


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curl rtsp media stream sdp


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curl - rtsp to GET SDP descriptor for media stream

 / Published in: C
 

use with single arg for the RTSP Url . OPTIONS, DESCRIBE , TEARDOWN commands issued during the conversation.

use on windows: ./rtspclient.exe rtsp://{streamURI}

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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4. //include <stddef.h>
  5. #include <curl/curl.h>
  6.  
  7. int main(int argc, char *argv[])
  8. {
  9.   CURL *csession;
  10.   CURLcode res;
  11.   struct curl_slist *custom_msg = NULL;
  12.   char URL[256];
  13.   char temp_URL[256];
  14.   char request[256];
  15.   long rc;
  16.   int port = 48000;
  17.   FILE * protofile = NULL;
  18.   protofile = fopen("Dump","wb");
  19.   if (argc < 2)
  20.   {
  21.       fprintf (stderr, "ERROR: enter a valid URL\n");
  22.       return -1;
  23.   }
  24.   csession = curl_easy_init();
  25.   if (csession == NULL)
  26.       return -1;
  27.   printf("%s\n", argv[1]);
  28.   sprintf (URL, "%s", argv[1]);
  29.   curl_easy_setopt(csession, CURLOPT_URL, URL);
  30.   curl_easy_setopt(csession, CURLOPT_RTSP_STREAM_URI, URL);
  31.   curl_easy_setopt(csession, CURLOPT_FOLLOWLOCATION, 1);
  32.   curl_easy_setopt(csession, CURLOPT_HEADER, 1);
  33.  // curl_easy_setopt(csession, CURLOPT_INTERLEAVEFUNCTION, rtp_write);
  34.   curl_easy_setopt(csession, CURLOPT_INTERLEAVEDATA, protofile);
  35.   //curl_easy_setopt(csession, CURLOPT_RANGE, NULL);
  36.   curl_easy_setopt(csession, CURLOPT_VERBOSE, 1);
  37.   /** retrieve OPTIONS */
  38.   curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_OPTIONS);
  39.   res = curl_easy_perform(csession);
  40.   res = curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
  41.   if((res == CURLE_OK) && rc)
  42.   {
  43.       fprintf(stderr, "OPTIONS Response Code: %ld\n\n", rc);
  44.   }
  45.   else
  46.       return -1;
  47.   /** send DESCRIBE */
  48.   custom_msg = curl_slist_append(custom_msg, "Accept: application/x-rtsp-mh, application/rtsl, application/sdp");
  49.   curl_easy_setopt(csession, CURLOPT_RTSPHEADER, custom_msg);
  50.   curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_DESCRIBE);
  51.   res = curl_easy_perform(csession);
  52.   res = curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
  53.   if((res == CURLE_OK) && rc)
  54.   {
  55.       fprintf(stderr, "DESCRIBE Response Code: %ld\n\n", rc);
  56.   }
  57.   else
  58.       return -1;
  59.   /** send SETUP */
  60.   /** send PLAY */
  61.  
  62.   //curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_RECEIVE);
  63.   //res = curl_easy_perform(csession);
  64.   /** send GET_PARAMETER */
  65.   /** send TEARDOWN */
  66.   curl_easy_setopt(csession, CURLOPT_RTSP_REQUEST, CURL_RTSPREQ_TEARDOWN);
  67.   res = curl_easy_perform(csession);
  68.   res = curl_easy_getinfo(csession, CURLINFO_RESPONSE_CODE, &rc);
  69.   if((res == CURLE_OK) && rc)
  70.   {
  71.       fprintf(stderr, "TEARDOWN Response Code: %ld\n\n", rc);
  72.   }
  73.   else
  74.       return -1;
  75.   curl_easy_cleanup(csession);
  76.   fclose(protofile);
  77.   return 0;
  78. }
  79.  
  80. CLI for build/ assemble
  81.  
  82. $ gcc -O2 -g -Wall -c -fmessage-length=0 -MMD -MP  -o "src/rtsp_client.o" 
  83.  
  84. $ gcc "src/rtsp_client.o" -o "src/rtsp_client.exe"  -lcurl

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