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

       curl_easy_getinfo(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

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

libcurl                                            2025-03-05                            CURLINFO_HEADER_SIZE(3)