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91 lines
3.3 KiB
Groff
91 lines
3.3 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" * SPDX-License-Identifier: curl
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_PROTOCOLS_STR 3 "11 Jun 2022" libcurl libcurl
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.SH NAME
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CURLOPT_PROTOCOLS_STR \- allowed protocols
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROTOCOLS_STR, char *spec);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a string that holds a comma-separated list of case
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insensitive protocol names (URL schemes) to allow in the transfer. This
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option allows applications to use libcurl built to support a wide range of
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protocols but still limit specific transfers to only be allowed to use a
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subset of them. By default, libcurl accepts all protocols it was built with
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support for. See also \fICURLOPT_REDIR_PROTOCOLS_STR(3)\fP.
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If trying to set a non-existing protocol or if no matching protocol at all is
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set, it returns error.
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These are the available protocols:
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DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS,
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MQTT, POP3, POP3S, RTMP, RTMPE, RTMPS, RTMPT, RTMPTE, RTMPTS, RTSP, SCP, SFTP,
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SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS, WSS
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You can set "ALL" as a short-cut to enable all protocols. Note that by setting
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all, you may enable protocols that were not supported the day you write this
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but are introduced in a future libcurl version.
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\fIcurl_version_info(3)\fP can be used to get a list of all supported
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protocols in the current libcurl. \fICURLINFO_SCHEME(3)\fP is the recommended
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way to figure out the protocol used in a previous transfer.
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.SH DEFAULT
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All protocols built-in
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(int argc, char **argv)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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/* pass in the URL from an external source */
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curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
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/* only allow HTTP, TFTP and SFTP */
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curl_easy_setopt(curl, CURLOPT_PROTOCOLS_STR, "http,tftp,sftp");
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/* Perform the request */
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.85.0
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.SH RETURN VALUE
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Returns CURLE_UNKNOWN_OPTION if the option is not implemented,
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CURLE_UNSUPPORTED_PROTOCOL if a listed protocol is not supported or disabled,
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CURLE_BAD_FUNCTION_ARGUMENT if no protocol is listed else CURLE_OK.
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.SH "SEE ALSO"
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.BR curl_version_info (3),
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.BR CURLINFO_SCHEME (3),
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.BR CURLOPT_DEFAULT_PROTOCOL (3),
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.BR CURLOPT_REDIR_PROTOCOLS_STR (3),
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.BR CURLOPT_URL (3)
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