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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 sup-
       pressed, 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, CURLOPT_SUPPRESS_CONNECT_HEADERS(3)

curl 7.54.0 - Generated Wed Apr 26 16:11:23 CDT 2017
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