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CURLOPT_REDIR_PROTOCOLS(3) Library Functions Manual CURLOPT_REDIR_PROTOCOLS(3) NAME CURLOPT_REDIR_PROTOCOLS - protocols allowed to redirect to SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_REDIR_PROTOCOLS, long bitmask); DESCRIPTION This option is deprecated. We strongly recommend using CUR- LOPT_REDIR_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 bit- mask limits what protocols libcurl may use in a transfer that it fol- lows to in a redirect when CURLOPT_FOLLOWLOCATION(3) is enabled. This allows you to limit specific transfers to only be allowed to use a sub- set of protocols in redirections. Protocols denied by CURLOPT_PROTOCOLS(3) are not overridden by this op- tion. By default libcurl allows HTTP, HTTPS, FTP and FTPS on redirect (7.65.2). CURLPROTO_ALL enables all protocols on redirect, including those otherwise disabled for security. 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 HTTP, HTTPS, FTP and FTPS (Added in 7.65.2). Older versions defaulted to all protocols except FILE, SCP and since 7.40.0 SMB and SMBS. PROTOCOLS This functionality affects http only 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 redirects to HTTP and HTTPS URLs */ curl_easy_setopt(curl, CURLOPT_REDIR_PROTOCOLS, (long) CURLPROTO_HTTP | CURLPROTO_HTTPS); /* 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). SEE ALSO CURLINFO_SCHEME(3), CURLOPT_DEFAULT_PROTOCOL(3), CURLOPT_PROTOCOLS(3), CURLOPT_REDIR_PROTOCOLS_STR(3) libcurl 2025-06-03 CURLOPT_REDIR_PROTOCOLS(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | DEPRECATED | AVAILABILITY | RETURN VALUE | SEE ALSO
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