rtsp curl code not playing video

after compilation and run the link video not played . my input was

INPUT TO PROGRAM:
./a.out rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream/

OUTPUT :

RTSP request V1.0
    Project web site: https://github.com/BackupGGCode/rtsprequest
    Requires curl V7.20 or greater

    curl V7.54.0 loaded

RTSP: OPTIONS rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream/
RTSP/1.0 200 OK
Server: Wowza Media Server 3.1.1 build1479
Cache-Control: no-cache
Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE, OPTIONS, ANNOUNCE, RECORD,
GET_PARAMETER
Cseq: 1
Supported: play.basic, con.persistent

RTSP: DESCRIBE rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream/
Writing SDP to 'video.sdp'
RTSP/1.0 200 OK
Server: Wowza Media Server 3.1.1 build1479
Cache-Control: no-cache
Expires: Fri, 14 Feb 2020 09:57:51 CET
Cseq: 2
Content-Length: 812
Content-Base: rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream/
Date: Fri, 14 Feb 2020 09:57:51 CET
Content-Type: application/sdp
Session: 1675774146;timeout=60

RTSP: SETUP rtsp://
freja.hiof.no:1935/rtplive/definst/hessdalen03.stream//trackID=2
      TRANSPORT RTP/AVP;unicast;client_port=1234-1235
RTSP/1.0 200 OK
Server: Wowza Media Server 3.1.1 build1479
Cache-Control: no-cache
Expires: Fri, 14 Feb 2020 09:57:51 CET
Cseq: 3
Transport: RTP/AVP;unicast;client_port=1234-1235;source=freja.hiof.no
;server_port=7174-7175;ssrc=6CC88579
Date: Fri, 14 Feb 2020 09:57:51 CET
Session: 1675774146;timeout=60

RTSP: PLAY rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream//
RTSP/1.0 200 OK
RTP-Info: url=trackID=1;seq=1;rtptime=3861933024,url=rtsp://
freja.hiof.no:1935/rtplive/definst/hessdalen03.stream//trackID=2;seq=1;rtptime=1335544388
Server: Wowza Media Server 3.1.1 build1479
Cache-Control: no-cache
Cseq: 4
Range: npt=now-
Session: 1675774146;timeout=60

Playing video, press any key to stop ...

RTSP: TEARDOWN rtsp://
freja.hiof.no:1935/rtplive/definst/hessdalen03.stream//
RTSP/1.0 403 Forbidden
Server: Wowza Media Server 3.1.1 build1479
Cseq: 5

SOURCE CODE :

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#if defined (WIN32)
# include <conio.h> /* _getch() */
#else
# include <termios.h>
# include <unistd.h>

static int _getch(void)
{
  struct termios oldt, newt;
  int ch;
  tcgetattr(STDIN_FILENO, &oldt);
  newt = oldt;
  newt.c_lflag &= ~( ICANON | ECHO);
  tcsetattr(STDIN_FILENO, TCSANOW, &newt);
  ch = getchar();
  tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
  return ch;
}
#endif

#include <curl/curl.h>

#define VERSION_STR "V1.0"

/* error handling macros */
#define my_curl_easy_setopt(A, B, C) \
  res = curl_easy_setopt((A), (B), (C)); \
  if(res != CURLE_OK) \
    fprintf(stderr, "curl_easy_setopt(%s, %s, %s) failed: %d\n", \
            #A, #B, #C, res);

#define my_curl_easy_perform(A) \
  res = curl_easy_perform(A); \
  if(res != CURLE_OK) \
    fprintf(stderr, "curl_easy_perform(%s) failed: %d\n", #A, res);

/* send RTSP OPTIONS request */
static void rtsp_options(CURL *curl, const char *uri)
{
  CURLcode res = CURLE_OK;
  printf("\nRTSP: OPTIONS %s\n", uri);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST,
(long)CURL_RTSPREQ_OPTIONS);
  my_curl_easy_perform(curl);
}

/* send RTSP DESCRIBE request and write sdp response to a file */
static void rtsp_describe(CURL *curl, const char *uri,
                          const char *sdp_filename)
{
  CURLcode res = CURLE_OK;
  FILE *sdp_fp = fopen(sdp_filename, "wb");
  printf("\nRTSP: DESCRIBE %s\n", uri);
  if(sdp_fp == NULL) {
    fprintf(stderr, "Could not open '%s' for writing\n", sdp_filename);
    sdp_fp = stdout;
  }
  else {
    printf("Writing SDP to '%s'\n", sdp_filename);
  }
  my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, sdp_fp);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST,
(long)CURL_RTSPREQ_DESCRIBE);
  my_curl_easy_perform(curl);
  my_curl_easy_setopt(curl, CURLOPT_WRITEDATA, stdout);
  if(sdp_fp != stdout) {
    fclose(sdp_fp);
  }
}

/* send RTSP SETUP request */
static void rtsp_setup(CURL *curl, const char *uri, const char *transport)
{
  CURLcode res = CURLE_OK;
  printf("\nRTSP: SETUP %s\n", uri);
  printf(" TRANSPORT %s\n", transport);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_TRANSPORT, transport);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_SETUP);
  my_curl_easy_perform(curl);
}

/* send RTSP PLAY request */
static void rtsp_play(CURL *curl, const char *uri, const char *range)
{
  CURLcode res = CURLE_OK;
  printf("\nRTSP: PLAY %s\n", uri);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, uri);
  my_curl_easy_setopt(curl, CURLOPT_RANGE, range);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_PLAY);
  my_curl_easy_perform(curl);

  /* switch off using range again */
  my_curl_easy_setopt(curl, CURLOPT_RANGE, NULL);
}

/* send RTSP TEARDOWN request */
static void rtsp_teardown(CURL *curl, const char *uri)
{
  CURLcode res = CURLE_OK;
  printf("\nRTSP: TEARDOWN %s\n", uri);
  my_curl_easy_setopt(curl, CURLOPT_RTSP_REQUEST,
(long)CURL_RTSPREQ_TEARDOWN);
  my_curl_easy_perform(curl);
}

/* convert url into an sdp filename */
static void get_sdp_filename(const char *url, char *sdp_filename,
                             size_t namelen)
{
  const char *s = strrchr(url, '/');
  strcpy(sdp_filename, "video.sdp");
  if(s != NULL) {
    s++;
    if(s[0] != '\0') {
      snprintf(sdp_filename, namelen, "%s.sdp", s);
    }
  }
}

/* scan sdp file for media control attribute */
static void get_media_control_attribute(const char *sdp_filename,
                                        char *control)
{
  int max_len = 256;
  char *s = malloc(max_len);
  FILE *sdp_fp = fopen(sdp_filename, "rb");
  control[0] = '\0';
  if(sdp_fp != NULL) {
    while(fgets(s, max_len - 2, sdp_fp) != NULL) {
      sscanf(s, " a = control: %s", control);
    }
    fclose(sdp_fp);
  }
  free(s);
}

/* main app */
int main(int argc, char * const argv[])
{
#if 1
  const char *transport = "RTP/AVP;unicast;client_port=1234-1235"; /* UDP
*/
#else
  /* TCP */
  const char *transport = "RTP/AVP/TCP;unicast;client_port=1234-1235";
#endif
  const char *range = "0.000-";
  int rc = EXIT_SUCCESS;
  char *base_name = NULL;

  printf("\nRTSP request %s\n", VERSION_STR);
  printf(" Project web site: "
    "https://github.com/BackupGGCode/rtsprequest\n");
  printf(" Requires curl V7.20 or greater\n\n");

  /* check command line */
  if((argc != 2) && (argc != 3)) {
    base_name = strrchr(argv[0], '/');
    if(base_name == NULL) {
      base_name = strrchr(argv[0], '\\');
    }
    if(base_name == NULL) {
      base_name = argv[0];
    }
    else {
      base_name++;
    }
    printf("Usage: %s url [transport]\n", base_name);
    printf(" url of video server\n");
    printf(" transport (optional) specifier for media stream"
           " protocol\n");
    printf(" default transport: %s\n", transport);
    printf("Example: %s rtsp://192.168.0.2/media/video1\n\n", base_name);
    rc = EXIT_FAILURE;
  }
  else {
    const char *url = argv[1];
    char *uri = malloc(strlen(url) + 32);
    char *sdp_filename = malloc(strlen(url) + 32);
    char *control = malloc(strlen(url) + 32);
    CURLcode res;
    get_sdp_filename(url, sdp_filename, strlen(url) + 32);
    if(argc == 3) {
      transport = argv[2];
    }

    /* initialize curl */
    res = curl_global_init(CURL_GLOBAL_ALL);
    if(res == CURLE_OK) {
      curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
      CURL *curl;
      fprintf(stderr, " curl V%s loaded\n", data->version);

      /* initialize this curl session */
      curl = curl_easy_init();
      if(curl != NULL) {
        my_curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
        my_curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);
        my_curl_easy_setopt(curl, CURLOPT_HEADERDATA, stdout);
        my_curl_easy_setopt(curl, CURLOPT_URL, url);

        /* request server options */
        snprintf(uri, strlen(url) + 32, "%s", url);
        rtsp_options(curl, uri);

        /* request session description and write response to sdp file */
        rtsp_describe(curl, uri, sdp_filename);

        /* get media control attribute from sdp file */
        get_media_control_attribute(sdp_filename, control);

        /* setup media stream */
        snprintf(uri, strlen(url) + 32, "%s/%s", url, control);
        rtsp_setup(curl, uri, transport);

        /* start playing media stream */
        snprintf(uri, strlen(url) + 32, "%s/", url);
        rtsp_play(curl, uri, range);
        printf("Playing video, press any key to stop ...");
        _getch();
        printf("\n");

        /* teardown session */
        rtsp_teardown(curl, uri);

        /* cleanup */
        curl_easy_cleanup(curl);
        curl = NULL;
      }
      else {
        fprintf(stderr, "curl_easy_init() failed\n");
      }
      curl_global_cleanup();
    }
    else {
      fprintf(stderr, "curl_global_init(%s) failed: %d\n",
              "CURL_GLOBAL_ALL", res);
    }
    free(control);
    free(sdp_filename);
    free(uri);
  }

  return rc;
}

-------------------------------------------------------------------
Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library
Etiquette: https://curl.haxx.se/mail/etiquette.html
Received on 2020-02-14