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)