easy:SetOpt_Redir_Protocols_Str(spec)
#CURLOPT_FOLLOWLOCATION
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
are not overridden by this
option.
By default libcurl will allow HTTP, HTTPS, FTP and FTPS on redirects (since 7.65.2). Older versions of libcurl allowed all protocols on redirect except several disabled for security reasons: Since 7.19.4 FILE and SCP are disabled, and since 7.40.0 SMB and SMBS are also disabled.
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 get "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 get a non-existing protocol or if no matching protocol at all is get, it returns error.