curlopt_ioctldata(3) mojave man page | unix.com

CURLOPT_IOCTLDATA(3)					     curl_easy_setopt options					      CURLOPT_IOCTLDATA(3)

NAME
       CURLOPT_IOCTLDATA - custom pointer passed to I/O callback

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer);

DESCRIPTION
       Pass the pointer that will be untouched by libcurl and passed as the 3rd argument in the ioctl callback set with CURLOPT_IOCTLFUNCTION(3).

DEFAULT
       By default, the value of this parameter is NULL.

PROTOCOLS
       Used with HTTP

EXAMPLE
       TODO

AVAILABILITY
       Added in 7.12.3

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO
       CURLOPT_IOCTLFUNCTION(3), CURLOPT_SEEKFUNCTION(3),

libcurl 7.54.0							 February 03, 2016					      CURLOPT_IOCTLDATA(3)