CURLOPT_TRAILERDATA(3) Introduction to Library Functions

NAME

CURLOPT_TRAILERDATA - pointer passed to trailing headers callback

SYNOPSIS

#include <curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TRAILERDATA, void *userdata);

DESCRIPTION

Data pointer to be passed to the HTTP trailer callback function.

DEFAULT

NULL

PROTOCOLS

This functionality affects http only

EXAMPLE

struct MyData {
void *custom;
};

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
struct MyData data;
curl_easy_setopt(curl, CURLOPT_TRAILERDATA, &data);
}
}

AVAILABILITY

Added in curl 7.64.0

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error
occurred, see libcurl-errors(3).

SEE ALSO

CURLOPT_TRAILERFUNCTION(3), CURLOPT_WRITEFUNCTION(3)

libcurl 2025-02-25 CURLOPT_TRAILERDATA(3)