CURLOPT_REDIR_PROTOCOLS_STR(3) Library Functions Manual
NAME
CURLOPT_REDIR_PROTOCOLS_STR - protocols allowed to redirect to
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_REDIR_PROTOCOLS_STR,
char *spec);
DESCRIPTION
Pass a pointer to a string that holds a comma-separated list of case
insensitive protocol names (URL schemes). That list limits what
protocols libcurl may use in a transfer that it follows to in a
redirect when CURLOPT_FOLLOWLOCATION(3) is enabled. This option allows
applications to limit specific transfers to only be allowed to use a
subset of protocols in redirections.
Protocols denied by CURLOPT_PROTOCOLS_STR(3) are not overridden by this
option.
By default libcurl allows HTTP, HTTPS, FTP and FTPS on redirects (since
7.65.2).
These are the available protocols:
DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP,
LDAPS, MQTT, POP3, POP3S, RTMP, RTMPE, RTMPS, RTMPT, RTMPTE, RTMPTS,
RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS, WSS
You can set "ALL" as a short-cut to enable all protocols. Note that by
setting all, you may enable protocols that were not supported the day
you write this but are introduced in a future libcurl version.
If trying to set a non-existing protocol or if no matching protocol at
all is set, it returns error.
DEFAULT
HTTP, HTTPS, FTP and FTPS (Added in 7.65.2).
Older versions defaulted to all protocols except FILE, SCP and since
7.40.0 SMB and SMBS.
PROTOCOLS
This functionality affects http only
EXAMPLE
int main(int argc, char **argv)
{
CURL *curl = curl_easy_init();
if(curl) {
/* pass in the URL from an external source */
curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
/* only allow redirects to HTTP and HTTPS URLs */
curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS_STR, "http,https");
/* Perform the request */
curl_easy_perform(curl);
}
}
AVAILABILITY
Added in curl 7.85.0
RETURN VALUE
Returns CURLE_UNKNOWN_OPTION if the option is not implemented,
CURLE_UNSUPPORTED_PROTOCOL if a listed protocol is not supported or
disabled, CURLE_BAD_FUNCTION_ARGUMENT if no protocol is listed else
CURLE_OK.
SEE ALSO
CURLINFO_SCHEME(3), CURLOPT_DEFAULT_PROTOCOL(3), CURLOPT_PROTOCOLS(3),
CURLOPT_PROTOCOLS_STR(3), CURLOPT_REDIR_PROTOCOLS(3)
libcurl 2024-08-05 CURLOPT_REDIR_PROTOCOLS_STR(3)
curl 8.9.1 - Generated Wed Aug 7 11:40:17 CDT 2024