CURLOPT_SUPPRESS_CONNECT_HEADERS(3)

CURLOPT_SUPPRESS_CONNECT_HEADERS(3curl_easy_setopt optionCURLOPT_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  functions  CURLOPT_HEADERFUNCTION(3)
     and CURLOPT_WRITEFUNCTION(3).

     Proxy CONNECT response headers can  complicate  header  pro-
     cessing  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

libcurl 7.58.0     Last change: April 28, 2016                  1

CURLOPT_SUPPRESS_CONNECT_HEADERS(3curl_easy_setopt optionCURLOPT_SUPPRESS_CONNECT_HEADERS(3)

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 7.58.0     Last change: April 28, 2016                  2