c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: connect-to Arg: HOST1:PORT1:HOST2:PORT2 Help: Connect to host Added: 7.49.0 Category: connection Multi: append See-also:
--connect-toFor a request to the given HOST1:PORT1 pair, connect to HOST2:PORT2 instead. This option is suitable to direct requests at a specific server, e.g. at a specific cluster node in a cluster of servers. This option is only used to establish the network connection. It does NOT affect the hostname/port that is used for TLS/SSL (e.g. SNI, certificate verification) or for the application protocols. HOST1 and PORT1 may be the empty string, meaning “any host/port”. HOST2 and PORT2 may also be the empty string, meaning “use the request's original host/port”.
A hostname specified to this option is compared as a string, so it needs to match the name used in request URL. It can be either numerical such as 127.0.0.1 or the full host name such as example.org.