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deps/curl/docs/libcurl/opts/CURLOPT_RTSP_SESSION_ID.md

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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_RTSP_SESSION_ID
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_RTSP_REQUEST (3)
+  - CURLOPT_RTSP_STREAM_URI (3)
+---
+
+# NAME
+
+CURLOPT_RTSP_SESSION_ID - RTSP session ID
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RTSP_SESSION_ID, char *id);
+~~~
+
+# 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
+*CURLE_RTSP_SESSION_ERROR* 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.
+
+# DEFAULT
+
+NULL
+
+# PROTOCOLS
+
+RTSP
+
+# EXAMPLE
+
+~~~c
+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);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Added in 7.20.0
+
+# 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.