CURLOPT_FOLLOWLOCATION - follow HTTP 3xx redirects
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FOLLOWLOCATION, long enable);
A long parameter set to 1 tells the library to follow any Location: header that
the server sends as part of an HTTP header in a 3xx response. The Location:
header can specify a relative or an absolute URL to follow.
libcurl will issue another request for the new URL and follow new Location:
headers all the way until no more such headers are returned.
CURLOPT_MAXREDIRS(3) can be used to limit the number of redirects
libcurl will follow.
libcurl limits what protocols it automatically follows to. The accepted
protocols are set with
CURLOPT_REDIR_PROTOCOLS(3). By default libcurl
will allow HTTP, HTTPS, FTP and FTPS on redirect (7.65.2). Older versions of
libcurl allowed all protocols on redirect except those disabled for security
reasons: Since 7.19.4 FILE and SCP are disabled, and since 7.40.0 SMB and SMBS
are also disabled.
When following a Location:, the 3xx response code that redirected it also
dictates which request method it will use in the subsequent request: For 301,
302 and 303 responses libcurl will switch method from POST to GET unless
CURLOPT_POSTREDIR(3) instructs libcurl otherwise. All other 3xx codes
will make libcurl send 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
.
0, disabled
HTTP(S)
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);
}
Along with HTTP
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
CURLOPT_REDIR_PROTOCOLS(3),
CURLOPT_PROTOCOLS(3),
CURLOPT_POSTREDIR(3),
CURLINFO_REDIRECT_URL(3),
CURLINFO_REDIRECT_COUNT(3),