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.\" **************************************************************************
.\" * _ _ ____ _
.\" * Project ___| | | | _ \| |
.\" * / __| | | | |_) | |
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.\" * are also available at https://curl.haxx.se/docs/copyright.html.
.\" *
.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
.\" * copies of the Software, and permit persons to whom the Software is
.\" * furnished to do so, under the terms of the COPYING file.
.\" *
.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
.\" * KIND, either express or implied.
.\" *
.\" **************************************************************************
.\"
.TH CURLOPT_TRAILERDATA 3 "14 Aug 2018" "libcurl 7.64.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_TRAILERDATA \- Custom pointer passed to the trailing headers callback
.SH SYNOPSIS
#include <curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TRAILERDATA, void *userdata);
.SH DESCRIPTION:
Data pointer to be passed to the HTTP trailer callback function.
.SH DEFAULT
NULL
.SH PROTOCOLS
HTTP
.SH EXAMPLE
.nf
/* Assuming we have a CURL handle in the hndl variable. */
struct MyData data;
curl_easy_setopt(hndl, CURLOPT_TRAILERDATA, &data);
.fi
A more complete example can be found in examples/http_trailers.html
.SH AVAILABILITY
This option was added in curl 7.64.0 and is present if HTTP support is enabled
.SH "SEE ALSO"
.BR CURLOPT_TRAILERFUNCTION "(3), "
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