NAME

       CURLOPT_POSTREDIR - how to act on an HTTP POST redirect

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTREDIR,
                                 long bitmask);

DESCRIPTION

       Pass a bitmask to control how libcurl acts on redirects after POSTs that get a 301, 302 or
       303 response back. A parameter with  bit  0  set  (value  CURL_REDIR_POST_301)  tells  the
       library  to  respect  RFC 7231 (section 6.4.2 to 6.4.4) and not convert POST requests into
       GET requests when following a 301 redirection. Setting bit 1  (value  CURL_REDIR_POST_302)
       makes libcurl maintain the request method after a 302 redirect whilst setting bit 2 (value
       CURL_REDIR_POST_303) makes libcurl maintain the request method after a 303  redirect.  The
       value CURL_REDIR_POST_ALL is a convenience define that sets all three bits.

       The  non-RFC behavior is ubiquitous in web browsers, so the library does the conversion by
       default to maintain consistency. However, a server may require a POST  to  remain  a  POST
       after    such   a   redirection.   This   option   is   meaningful   only   when   setting
       CURLOPT_FOLLOWLOCATION(3).

DEFAULT

       0

PROTOCOLS

       This functionality affects http only

EXAMPLE

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

           /* a silly POST example */
           curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "data=true");

           /* example.com is redirected, so we tell libcurl to send POST on 301,
              302 and 303 HTTP response codes */
           curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);

           curl_easy_perform(curl);
         }
       }

HISTORY

       This option was known as CURLOPT_POST301 up to 7.19.0 as it only supported the  301  then.
       CURL_REDIR_POST_303 was added in 7.26.0.

AVAILABILITY

       Added in curl 7.19.1

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLINFO_EFFECTIVE_METHOD(3),    CURLINFO_REDIRECT_COUNT(3),    CURLOPT_FOLLOWLOCATION(3),
       CURLOPT_MAXREDIRS(3), CURLOPT_POSTFIELDS(3)