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lws minimal ws server raw proxy

This demonstrates how a vhost can be bound to a specific role and protocol, with the example using a lws plugin that performs raw packet proxying.

By default the example will proxy 127.0.0.1:22, usually your ssh server listen port, on 127.0.0.1:7681. You should be able to ssh into port 7681 the same as you can port 22. But your ssh server is only listening on port 22...

build

To build this standalone, you must tell cmake where the lws source tree ./plugins directory can be found, since it relies on including the source of the raw-proxy plugin.

 $ cmake . -DLWS_PLUGINS_DIR=~/libwebsockets/plugins && make

usage

Commandline option Meaning
-d Debug verbosity in decimal, eg, -d15
-r ipv4:address:port Configure the remote IP and port that will be proxied, by default ipv4:127.0.0.1:22
 $ ./lws-minimal-raw-proxy
[2018/11/30 19:22:35:7290] USER: LWS minimal raw proxy | nc localhost 7681
[2018/11/30 19:22:35:7291] NOTICE: Creating Vhost 'default' port 7681, 1 protocols, IPv6 off
[2018/11/30 19:22:35:7336] NOTICE: callback_raw_proxy: onward ipv4 127.0.0.1:22
...
 $ ssh -p7681 me@127.0.0.1
Last login: Fri Nov 30 19:29:23 2018 from 127.0.0.1
[me@learn ~]$