.\" ************************************************************************** .\" * _ _ ____ _ .\" * 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), "