82 lines
2.1 KiB
Markdown
82 lines
2.1 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_POSTREDIR
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_EFFECTIVE_METHOD (3)
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- CURLINFO_REDIRECT_COUNT (3)
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- CURLOPT_FOLLOWLOCATION (3)
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- CURLOPT_MAXREDIRS (3)
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- CURLOPT_POSTFIELDS (3)
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---
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# NAME
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CURLOPT_POSTREDIR - how to act on an HTTP POST redirect
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTREDIR,
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long bitmask);
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~~~
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# DESCRIPTION
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Pass a bitmask to control how libcurl acts on redirects after POSTs that get a
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301, 302 or 303 response back. A parameter with bit 0 set (value
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**CURL_REDIR_POST_301**) tells the library to respect RFC 7231 (section
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6.4.2 to 6.4.4) and not convert POST requests into GET requests when following
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a 301 redirection. Setting bit 1 (value **CURL_REDIR_POST_302**) makes
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libcurl maintain the request method after a 302 redirect whilst setting bit 2
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(value **CURL_REDIR_POST_303**) makes libcurl maintain the request method
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after a 303 redirect. The value **CURL_REDIR_POST_ALL** is a convenience
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define that sets all three bits.
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The non-RFC behavior is ubiquitous in web browsers, so the library does the
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conversion by default to maintain consistency. However, a server may require a
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POST to remain a POST after such a redirection. This option is meaningful only
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when setting CURLOPT_FOLLOWLOCATION(3).
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# DEFAULT
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0
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# PROTOCOLS
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HTTP(S)
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* a silly POST example */
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curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "data=true");
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/* example.com is redirected, so we tell libcurl to send POST on 301,
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302 and 303 HTTP response codes */
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curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
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curl_easy_perform(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.17.1. This option was known as CURLOPT_POST301 up to 7.19.0 as it
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only supported the 301 then. CURL_REDIR_POST_303 was added in 7.26.0.
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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