CURLOPT_REDIR_PROTOCOLS(3)

1CURLOPT_REDIR_PROTOCOLS(3) curl_easy_setopt options CURLOPT_REDIR_PROTOCOLS(3)
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NAME

6       CURLOPT_REDIR_PROTOCOLS - protocols allowed to redirect to
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_REDIR_PROTOCOLS, long bitmask);
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DESCRIPTION

14       This   option   is   deprecated.   We  strongly  recommend  using  CUR‐
15       LOPT_REDIR_PROTOCOLS_STR(3) instead because this option cannot  control
16       all available protocols!
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18       Pass  a long that holds a bitmask of CURLPROTO_* defines. If used, this
19       bitmask limits what protocols libcurl may use in  a  transfer  that  it
20       follows  to  in  a  redirect when CURLOPT_FOLLOWLOCATION(3) is enabled.
21       This allows you to limit specific transfers to only be allowed to use a
22       subset of protocols in redirections.
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24       Protocols denied by CURLOPT_PROTOCOLS(3) are not overridden by this op‐
25       tion.
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27       By default libcurl will allow HTTP, HTTPS, FTP  and  FTPS  on  redirect
28       (7.65.2).   Older versions of libcurl allowed all protocols on redirect
29       except several disabled for security reasons: Since 7.19.4 FILE and SCP
30       are  disabled,  and  since 7.40.0 SMB and SMBS are also disabled. CURL‐
31       PROTO_ALL enables all protocols on redirect, including  those  disabled
32       for security.
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34       These are the available protocol defines:
35       CURLPROTO_DICT
36       CURLPROTO_FILE
37       CURLPROTO_FTP
38       CURLPROTO_FTPS
39       CURLPROTO_GOPHER
40       CURLPROTO_HTTP
41       CURLPROTO_HTTPS
42       CURLPROTO_IMAP
43       CURLPROTO_IMAPS
44       CURLPROTO_LDAP
45       CURLPROTO_LDAPS
46       CURLPROTO_POP3
47       CURLPROTO_POP3S
48       CURLPROTO_RTMP
49       CURLPROTO_RTMPE
50       CURLPROTO_RTMPS
51       CURLPROTO_RTMPT
52       CURLPROTO_RTMPTE
53       CURLPROTO_RTMPTS
54       CURLPROTO_RTSP
55       CURLPROTO_SCP
56       CURLPROTO_SFTP
57       CURLPROTO_SMB
58       CURLPROTO_SMBS
59       CURLPROTO_SMTP
60       CURLPROTO_SMTPS
61       CURLPROTO_TELNET
62       CURLPROTO_TFTP
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DEFAULT

65       HTTP, HTTPS, FTP and FTPS (Added in 7.65.2).
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67       Older  versions  defaulted  to all protocols except FILE, SCP and since
68       7.40.0 SMB and SMBS.
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PROTOCOLS

71       All
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EXAMPLE

74       curl = curl_easy_init();
75       if(curl) {
76         /* pass in the URL from an external source */
77         curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
78
79         /* only allow redirects to HTTP and HTTPS URLs */
80         curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS,
81                          CURLPROTO_HTTP | CURLPROTO_HTTPS);
82
83         /* Perform the request */
84         curl_easy_perform(curl);
85       }
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AVAILABILITY

88       Added in 7.19.4, before then it would follow all protocols.
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RETURN VALUE

91       Returns CURLE_OK if the option is supported,  and  CURLE_UNKNOWN_OPTION
92       if not.
93