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CURLINFO_HEADER_SIZE(3)	   Library Functions Manual    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  CUR-
       LOPT_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_get-
       info(3),	curl_easy_setopt(3)

libcurl				  2025-06-03	       CURLINFO_HEADER_SIZE(3)

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