Man page - curlopt_protocols(3)

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Manual

CURLOPT_PROTOCOLS

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
DEPRECATED
AVAILABILITY
RETURN VALUE
SEE ALSO

NAME

CURLOPT_PROTOCOLS - allowed protocols

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROTOCOLS, long bitmask);

DESCRIPTION

This option is deprecated. We strongly recommend using CURLOPT_PROTOCOLS_STR(3) instead because this option cannot control all available protocols.

Pass a long that holds a bitmask of protocol bits. If used, this bitmask limits what protocols libcurl may use in the transfer. This allows you to have a libcurl built to support a wide range of protocols but still limit specific transfers to only be allowed to use a subset of them. By default libcurl accepts all protocols it supports ( CURLPROTO_ALL ). See also CURLOPT_REDIR_PROTOCOLS(3) .

These are the available protocol defines:
CURLPROTO_DICT
CURLPROTO_FILE
CURLPROTO_FTP
CURLPROTO_FTPS
CURLPROTO_GOPHER
CURLPROTO_HTTP
CURLPROTO_HTTPS
CURLPROTO_IMAP
CURLPROTO_IMAPS
CURLPROTO_LDAP
CURLPROTO_LDAPS
CURLPROTO_POP3
CURLPROTO_POP3S
CURLPROTO_RTMP
CURLPROTO_RTMPE
CURLPROTO_RTMPS
CURLPROTO_RTMPT
CURLPROTO_RTMPTE
CURLPROTO_RTMPTS
CURLPROTO_RTSP
CURLPROTO_SCP
CURLPROTO_SFTP
CURLPROTO_SMB
CURLPROTO_SMBS
CURLPROTO_SMTP
CURLPROTO_SMTPS
CURLPROTO_TELNET
CURLPROTO_TFTP

DEFAULT

All protocols built-in.

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

int main(int argc, char **argv)
{
CURL *curl = curl_easy_init();
if(curl) {
/* pass in the URL from an external source */
curl_easy_setopt(curl, CURLOPT_URL, argv[1]);

/* only allow HTTP, TFTP and SFTP */
curl_easy_setopt(curl, CURLOPT_PROTOCOLS,
(long)CURLPROTO_HTTP | CURLPROTO_TFTP | CURLPROTO_SFTP);

/* Perform the request */
curl_easy_perform(curl);
}
}

DEPRECATED

Deprecated since 7.85.0.

AVAILABILITY

Added in curl 7.19.4

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3) .