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curldown is this new file format for libcurl man pages. It is markdown inspired with differences: - Each file has a set of leading headers with meta-data - Supports a small subset of markdown - Uses .md file extensions for editors/IDE/GitHub to treat them nicely - Generates man pages very similar to the previous ones - Generates man pages that still convert nicely to HTML on the website - Detects and highlights mentions of curl symbols automatically (when their man page section is specified) tools: - cd2nroff: converts from curldown to nroff man page - nroff2cd: convert an (old) nroff man page to curldown - cdall: convert many nroff pages to curldown versions - cd2cd: verifies and updates a curldown to latest curldown This setup generates .3 versions of all the curldown versions at build time. CI: Since the documentation is now technically markdown in the eyes of many things, the CI runs many more tests and checks on this documentation, including proselint, link checkers and tests that make sure we capitalize the first letter after a period... Closes #12730
104 lines
2 KiB
Markdown
104 lines
2 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_PROTOCOLS
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_DEFAULT_PROTOCOL (3)
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- CURLOPT_REDIR_PROTOCOLS (3)
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- CURLOPT_URL (3)
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---
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# NAME
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CURLOPT_PROTOCOLS - allowed protocols
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROTOCOLS, long bitmask);
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~~~
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# DESCRIPTION
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This option is deprecated. We strongly recommend using
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CURLOPT_PROTOCOLS_STR(3) instead because this option cannot control all
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available protocols!
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Pass a long that holds a bitmask of CURLPROTO_* defines. If used, this bitmask
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limits what protocols libcurl may use in the transfer. This allows you to have
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a libcurl built to support a wide range of protocols but still limit specific
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transfers to only be allowed to use a subset of them. By default libcurl
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accepts all protocols it supports (*CURLPROTO_ALL*). See also
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CURLOPT_REDIR_PROTOCOLS(3).
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These are the available protocol defines:
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~~~c
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CURLPROTO_DICT
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CURLPROTO_FILE
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CURLPROTO_FTP
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CURLPROTO_FTPS
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CURLPROTO_GOPHER
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CURLPROTO_HTTP
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CURLPROTO_HTTPS
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CURLPROTO_IMAP
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CURLPROTO_IMAPS
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CURLPROTO_LDAP
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CURLPROTO_LDAPS
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CURLPROTO_POP3
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CURLPROTO_POP3S
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CURLPROTO_RTMP
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CURLPROTO_RTMPE
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CURLPROTO_RTMPS
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CURLPROTO_RTMPT
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CURLPROTO_RTMPTE
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CURLPROTO_RTMPTS
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CURLPROTO_RTSP
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CURLPROTO_SCP
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CURLPROTO_SFTP
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CURLPROTO_SMB
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CURLPROTO_SMBS
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CURLPROTO_SMTP
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CURLPROTO_SMTPS
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CURLPROTO_TELNET
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CURLPROTO_TFTP
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~~~
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# DEFAULT
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All protocols built-in.
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# PROTOCOLS
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All
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# EXAMPLE
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~~~c
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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,
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CURLPROTO_HTTP | CURLPROTO_TFTP | CURLPROTO_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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~~~
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# AVAILABILITY
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Added in 7.19.4. Deprecated since 7.85.0.
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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