CURLOPT_SUPPRESS_CONNECT_HEADERS(3)			     curl_easy_setopt options			       CURLOPT_SUPPRESS_CONNECT_HEADERS(3)

NAME

       CURLOPT_SUPPRESS_CONNECT_HEADERS - Suppress proxy CONNECT response headers from user callbacks

SYNOPSIS

       #include <curl/curl.h>

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

DESCRIPTION

       When CURLOPT_HTTPPROXYTUNNEL(3) is used and a CONNECT request is made, suppress proxy CONNECT response headers from the user callback func-
       tions CURLOPT_HEADERFUNCTION(3) and CURLOPT_WRITEFUNCTION(3).

       Proxy CONNECT response headers can complicate header processing since it's essentially a separate set  of  headers.  You  can  enable  this
       option to suppress those headers.

       For  example  let's  assume  an	HTTPS URL is to be retrieved via CONNECT. On success there would normally be two sets of headers, and each
       header line sent to the header function and/or the write function. The data given to the callbacks would look like this:

       HTTP/1.1 200 Connection established
       {headers}...

       HTTP/1.1 200 OK
       Content-Type: application/json
       {headers}...

       {body}...

       However by enabling this option the CONNECT response headers are suppressed, so the data given to the callbacks would look like this:

       HTTP/1.1 200 OK
       Content-Type: application/json
       {headers}...

       {body}...

DEFAULT

       0

PROTOCOLS

       All

EXAMPLE

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

	 curl_easy_setopt(curl, CURLOPT_HEADER, 1L);
	 curl_easy_setopt(curl, CURLOPT_PROXY, "http://foo:3128");
	 curl_easy_setopt(curl, CURLOPT_HTTPPROXYTUNNEL, 1L);
	 curl_easy_setopt(curl, CURLOPT_SUPPRESS_CONNECT_HEADERS, 1L);

	 curl_easy_perform(curl);

	 /* always cleanup */
	 curl_easy_cleanup(curl);
       }

AVAILABILITY

       Added in 7.54.0

RETURN VALUE

       CURLE_OK or an error such as CURLE_UNKNOWN_OPTION.

SEE ALSO

       CURLOPT_HEADER(3), CURLOPT_PROXY(3), CURLOPT_HTTPPROXYTUNNEL(3),

libcurl 7.54.0							  April 28, 2016			       CURLOPT_SUPPRESS_CONNECT_HEADERS(3)