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//opt/curlssl/share/man/man3/CURLOPT_HEADERDATA.3

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.TH CURLOPT_HEADERDATA 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_HEADERDATA \- pointer to pass to header callback
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADERDATA, void *pointer);
.SH DESCRIPTION
Pass a \fIpointer\fP to be used to write the header part of the received data
to.

If \fICURLOPT_WRITEFUNCTION(3)\fP or \fICURLOPT_HEADERFUNCTION(3)\fP is used,
\fIpointer\fP will be passed in to the respective callback.

If neither of those options are set, \fIpointer\fP must be a valid FILE * and
it will be used by a plain fwrite() to write headers to.
.SH DEFAULT
NULL
.SH PROTOCOLS
All
.SH EXAMPLE
TODO
.SH AVAILABILITY
Always
.SH RETURN VALUE
Returns CURLE_OK
.SH "SEE ALSO"
.BR CURLOPT_HEADERFUNCTION "(3), " CURLOPT_WRITEFUNCTION "(3), "