CURLINFO_HEADER_SIZE(3)    curl_easy_getinfo options   CURLINFO_HEADER_SIZE(3)

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
       _SUPPRESS_CONNECT_HEADERS&section=3">CURLOPT_SUPPRESS_CONNECT_HEADERS(3).

PROTOCOLS
       All

EXAMPLE
       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 7.4.1

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

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

libcurl 7.77.0                 November 4, 2020        CURLINFO_HEADER_SIZE(3)