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CURLOPT_POSTREDIR(3) Library Functions Manual CURLOPT_POSTREDIR(3) 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 (sec- tion 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 op- tion 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, (long)CURL_REDIR_POST_ALL); curl_easy_perform(curl); } } HISTORY This option was known as CURLOPT_POST301 up to 7.19.0 as it only sup- ported the 301 then. CURL_REDIR_POST_303 was added in 7.26.0. AVAILABILITY Added in curl 7.19.1 RETURN VALUE curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLINFO_EFFECTIVE_METHOD(3), CURLINFO_REDIRECT_COUNT(3), CURLOPT_FOL- LOWLOCATION(3), CURLOPT_MAXREDIRS(3), CURLOPT_POSTFIELDS(3) libcurl 2025-06-03 CURLOPT_POSTREDIR(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | HISTORY | AVAILABILITY | RETURN VALUE | SEE ALSO
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