NAME

CURLINFO_HEADER_SIZE - get size of retrieved headers

SYNOPSIS

#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HEADER_SIZE, long *sizep);

DESCRIPTION

Pass a pointer to a long to receive the total size of all the headers received. Measured in number of bytes.

The total includes the size of any received headers suppressed by CURLOPT_SUPPRESS_CONNECT_HEADERS(3).

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

int main(void)
{


  CURL *curl = curl_easy_init();


  if(curl) {


    CURLcode res;


    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");


    res = curl_easy_perform(curl);


    if(res == CURLE_OK) {


      long size;


      res = curl_easy_getinfo(curl, CURLINFO_HEADER_SIZE, &size);


      if(!res)


        printf("Header size: %ld bytes\n", size);


    }


    curl_easy_cleanup(curl);


  }
}

AVAILABILITY

Added in curl 7.4.1

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

CURLINFO_REQUEST_SIZE(3), CURLINFO_SIZE_DOWNLOAD(3), curl_easy_getinfo(3), curl_easy_setopt(3)