.\" generated by cd2nroff 0.1 from CURLOPT_RTSP_SESSION_ID.md
.TH CURLOPT_RTSP_SESSION_ID 3 "2024-11-18" libcurl
.SH NAME
CURLOPT_RTSP_SESSION_ID \- RTSP session ID
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RTSP_SESSION_ID, char *id);
.fi
.SH DESCRIPTION
Pass a char pointer as a parameter to set the value of the current RTSP
Session ID for the handle. Useful for resuming an in\-progress session. Once
this value is set to any non\-NULL value, libcurl returns
\fICURLE_RTSP_SESSION_ERROR\fP if ID received from the server does not match. If
unset (or set to NULL), libcurl automatically sets the ID the first time the
server sets it in a response.

The application does not have to keep the string around after setting this
option.
.SH DEFAULT
NULL
.SH PROTOCOLS
This functionality affects rtsp only
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    char *prev_id; /* saved from before somehow */
    curl_easy_setopt(curl, CURLOPT_URL, "rtsp://example.com/");
    curl_easy_setopt(curl, CURLOPT_RTSP_SESSION_ID, prev_id);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.20.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
.SH SEE ALSO
.BR CURLOPT_RTSP_REQUEST (3),
.BR CURLOPT_RTSP_STREAM_URI (3)