CURLMOPT_TIMERDATA (3) - Linux Manuals
CURLMOPT_TIMERDATA: custom pointer to pass to timer callback
NAME
CURLMOPT_TIMERDATA - custom pointer to pass to timer callbackSYNOPSIS
#include <curl/curl.h> CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_TIMERDATA, void *pointer);
DESCRIPTION
A data pointer to pass to the timer callback set with the CURLMOPT_TIMERFUNCTION(3) option.This pointer will not be touched by libcurl but will only be passed in to the timer callbacks's userp argument.