x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
CURLOPT_FOLLOWLOCATION(3) libcurl CURLOPT_FOLLOWLOCATION(3)
NAME
CURLOPT_FOLLOWLOCATION - follow HTTP 3xx redirects
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FOLLOWLOCATION, long enable);
DESCRIPTION
A long parameter set to 1 tells the library to follow any Location:
header redirects that a HTTP server sends in a 30x response. The Loca-
tion: header can specify a relative or an absolute URL to follow.
libcurl issues another request for the new URL and follows subsequent
new Location: redirects all the way until no more such headers are
returned or the maximum limit is reached. CURLOPT_MAXREDIRS(3) is used
to limit the number of redirects libcurl follows.
libcurl restricts what protocols it automatically follow redirects to.
The accepted target protocols are set with CURLOPT_REDIR_PROTOCOLS(3).
By default libcurl allows HTTP, HTTPS, FTP and FTPS on redirects.
When following a redirect, the specific 30x response code also dictates
which request method libcurl uses in the subsequent request: For 301,
302 and 303 responses libcurl switches method from POST to GET unless
CURLOPT_POSTREDIR(3) instructs libcurl otherwise. All other redirect
response codes make libcurl use the same method again.
For users who think the existing location following is too naive, too
simple or just lacks features, it is easy to instead implement your own
redirect follow logic with the use of curl_easy_getinfo(3)'s
CURLINFO_REDIRECT_URL(3) option instead of using CURLOPT_FOLLOWLOCA-
TION(3).
NOTE
Since libcurl changes method or not based on the specific HTTP response
code, setting CURLOPT_CUSTOMREQUEST(3) while following redirects may
change what libcurl would otherwise do and if not that carefully may
even make it misbehave since CURLOPT_CUSTOMREQUEST(3) overrides the
method libcurl would otherwise select internally.
DEFAULT
0, disabled
PROTOCOLS
HTTP(S)
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* example.com is redirected, so we tell libcurl to follow redirection */
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_perform(curl);
}
AVAILABILITY
Along with HTTP
RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
CURLINFO_REDIRECT_COUNT(3), CURLINFO_REDIRECT_URL(3), CUR-
LOPT_POSTREDIR(3), CURLOPT_PROTOCOLS(3), CURLOPT_REDIR_PROTOCOLS(3)
ibcurl 8.4.0 September 26, 2023 CURLOPT_FOLLOWLOCATION(3)
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