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.TH CURLOPT_TRAILERDATA 3 "October 31, 2019" "libcurl 7.70.0" "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), "