1CURLOPT_REDIR_PROTOCOLS(3) curl_easy_setopt options CURLOPT_REDIR_PROTOCOLS(3)
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6 CURLOPT_REDIR_PROTOCOLS - set protocols allowed to redirect to
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_REDIR_PROTOCOLS, long
12 bitmask);
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15 Pass a long that holds a bitmask of CURLPROTO_* defines. If used, this
16 bitmask limits what protocols libcurl may use in a transfer that it
17 follows to in a redirect when CURLOPT_FOLLOWLOCATION(3) is enabled.
18 This allows you to limit specific transfers to only be allowed to use a
19 subset of protocols in redirections.
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21 Protocols denied by CURLOPT_PROTOCOLS(3) are not overridden by this
22 option.
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24 By default libcurl will allow HTTP, HTTPS, FTP and FTPS on redirect
25 (7.65.2). Older versions of libcurl allowed all protocols on redirect
26 except several disabled for security reasons: Since 7.19.4 FILE and SCP
27 are disabled, and since 7.40.0 SMB and SMBS are also disabled. CURL‐
28 PROTO_ALL enables all protocols on redirect, including those disabled
29 for security.
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31 These are the available protocol defines:
32 CURLPROTO_DICT
33 CURLPROTO_FILE
34 CURLPROTO_FTP
35 CURLPROTO_FTPS
36 CURLPROTO_GOPHER
37 CURLPROTO_HTTP
38 CURLPROTO_HTTPS
39 CURLPROTO_IMAP
40 CURLPROTO_IMAPS
41 CURLPROTO_LDAP
42 CURLPROTO_LDAPS
43 CURLPROTO_POP3
44 CURLPROTO_POP3S
45 CURLPROTO_RTMP
46 CURLPROTO_RTMPE
47 CURLPROTO_RTMPS
48 CURLPROTO_RTMPT
49 CURLPROTO_RTMPTE
50 CURLPROTO_RTMPTS
51 CURLPROTO_RTSP
52 CURLPROTO_SCP
53 CURLPROTO_SFTP
54 CURLPROTO_SMB
55 CURLPROTO_SMBS
56 CURLPROTO_SMTP
57 CURLPROTO_SMTPS
58 CURLPROTO_TELNET
59 CURLPROTO_TFTP
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62 HTTP, HTTPS, FTP and FTPS (Since 7.65.2).
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64 Older versions defaulted to all protocols except FILE, SCP and since
65 7.40.0 SMB and SMBS.
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68 All
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71 curl = curl_easy_init();
72 if(curl) {
73 /* pass in the URL from an external source */
74 curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
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76 /* only allow redirects to HTTP and HTTPS URLs */
77 curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS,
78 CURLPROTO_HTTP | CURLPROTO_HTTPS);
79
80 /* Perform the request */
81 curl_easy_perform(curl);
82 }
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85 Added in 7.19.4, before then it would follow all protocols.
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88 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
89 if not.
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92 CURLOPT_PROTOCOLS(3),
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96libcurl 7.69.1 February 18, 2020 CURLOPT_REDIR_PROTOCOLS(3)