CURLOPT_HEADER(3)          curl_easy_setopt options          CURLOPT_HEADER(3)

NAME
       CURLOPT_HEADER - pass headers to the data stream

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADER, long onoff);

DESCRIPTION
       Pass in onoff set to 1 to tell the library to include the header in the
       body output for requests with this handle. This option is relevant  for
       protocols  that actually have headers or other meta-data (like HTTP and
       FTP).

       When asking to get the header info passed to the same callback  as  the
       body,  it  is  not  possible  to accurately separate them again without
       detailed knowledge about the protocol in use.

       It is often better to use CURLOPT_HEADERFUNCTION(3) to get  the  header
       data separately.

       While  named  confusingly similar, CURLOPT_HTTPHEADER(3) is used to set
       custom HTTP headers!

DEFAULT
       0

PROTOCOLS
       Most

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

         curl_easy_setopt(curl, CURLOPT_HEADER, 1L);

         curl_easy_perform(curl);
       }

RETURN VALUE
       Returns CURLE_OK.

SEE ALSO
       CURLOPT_HEADERFUNCTION(3), CURLOPT_HTTPHEADER(3),

libcurl 7.54.0                 February 03, 2016             CURLOPT_HEADER(3)