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71 lines
2.5 KiB
Groff
71 lines
2.5 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_PROTOCOLS_STR.md
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.TH CURLOPT_PROTOCOLS_STR 3 "2024-12-25" 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 protocols in
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the current libcurl. \fICURLINFO_SCHEME(3)\fP is the recommended way to figure out
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the protocol used in a previous transfer.
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Using this option multiple times makes the last set string override the
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previous ones. Set it to NULL to restore to the internal default.
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.SH DEFAULT
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All protocols built\-in
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.SH PROTOCOLS
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This functionality affects all supported protocols
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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 curl 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 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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.BR curl_version_info (3)
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