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.TH CURLOPT_IOCTLDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_IOCTLDATA \- custom pointer passed to I/O callback
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer);
.SH DESCRIPTION
Pass the \fIpointer\fP that will be untouched by libcurl and passed as the 3rd
argument in the ioctl callback set with \fICURLOPT_IOCTLFUNCTION(3)\fP.
.SH DEFAULT
By default, the value of this parameter is NULL.
.SH PROTOCOLS
Used with HTTP
.SH EXAMPLE
TODO
.SH AVAILABILITY
Added in 7.12.3
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_IOCTLFUNCTION "(3), " CURLOPT_SEEKFUNCTION "(3), "