CURLOPT_INTERLEAVEDATA - pointer passed to RTSP interleave callback

Added in curl 7.20.0

NULL

This is the userdata pointer that is passed to CURLOPT_INTERLEAVEFUNCTION(3) when interleaved RTP data is received. If the interleave function callback is not set, this pointer is not used anywhere.

struct local { void *custom; }; static size_t rtp_write(void *ptr, size_t size, size_t nmemb, void *userp) { struct local *l = userp; printf("my pointer: %p\n", l->custom); /* take care of the packet in 'ptr', then return... */ return size * nmemb; } int main(void) { struct local rtp_data; CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_INTERLEAVEFUNCTION, rtp_write); curl_easy_setopt(curl, CURLOPT_INTERLEAVEDATA, &rtp_data); curl_easy_perform(curl); } }

CURLOPT_INTERLEAVEDATA - pointer passed to RTSP interleave callback

This functionality affects rtsp only

curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

CURLOPT_INTERLEAVEFUNCTION(3), CURLOPT_RTSP_REQUEST(3) libcurl 2025-06-16 CURLOPT_INTERLEAVEDATA(3)

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INTERLEAVEDATA, void *pointer);