CURLOPT_SOCKOPTDATA (3) Linux Manual Page
CURLOPT_SOCKOPTDATA – custom pointer to pass to sockopt callback
Synopsis
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKOPTDATA, void *pointer);
Description
Pass a pointer that will be untouched by libcurl and passed as the first argument in the sockopt callback set with CURLOPT_SOCKOPTFUNCTION(3).
Default
The default value of this parameter is NULL.
Protocols
All
Example
TODO
Availability
Added in 7.16.0
Return Value
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.