Provided by: libcurl4-doc_7.47.0-1ubuntu2.19_all 

NAME
CURLOPT_OPENSOCKETDATA - custom pointer passed to open socket callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_OPENSOCKETDATA, void *pointer);
DESCRIPTION
Pass a pointer that will be untouched by libcurl and passed as the first argument in the opensocket
callback set with CURLOPT_OPENSOCKETFUNCTION(3).
DEFAULT
The default value of this parameter is NULL.
PROTOCOLS
All
EXAMPLE
TODO
AVAILABILITY
Added in 7.17.1
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
CURLOPT_OPENSOCKETFUNCTION(3), CURLOPT_SOCKOPTFUNCTION(3),
libcurl 7.37.0 16 Jun 2014 CURLOPT_OPENSOCKETDATA(3)