Module for creating SSH tunnels using ssh. https://github.com/drowzy/ssh_tunnel

It provides functions to create forwarded ssh channels, similair to how other channels can be created using ssh_connection. There are two type of channels supported * directtcp-ip` - Forwards a port from the client machine to the remote machine. This is the same as `ssh -nNT -L 8080:forward.example.com:9000 user@sshserver.example.com * direct-streamlocal - Forwards to a unix domain socket. This is the same as ssh -nNT -L 8080:/var/lib/mysql/mysql.sock user@sshserver.example.com When using direct_tcpip/3 or direct_stream_local/2 directly there will not be any local port or socket bound, this can either be done using ssh_tunnel or by manually sending data with ssh_connection.send/3. Although connect/1 can be used to connect to the remote host, other methods are supported. One can use [SSHex](https://github.com/rubencaro/sshex), ssh:connect/3 for instance.

## Tunnels Tunnels are on-demand TCP servers and are bound listeners to either a port or a path. The tunnel will handle relaying TCP messages to the ssh connection and back.

    {ok, SshRef} = ssh_tunnel:connect("sshserver.example.com", 22, []),
    {ok, Pid}    = ssh_tunnel:start_tunnel(Pid, {tcpip, {8080, {"192.168.90.15", 80}}}),
    % Send a TCP message for instance HTTP
    Resp = HTTPoison.get!("127.0.0.1:8080"),
    io:format("Received body: ~p\n", [Resp])

-spec direct_stream_local(pid(), string()) -> {ok, integer()} | {error, term()}.

  msg = "GET /images/json HTTP/1.1\r\nHost: /var/run/docker.sock\r\nAccept: */*\r\n\r\n"
  {ok, Pid} = ssh_tunnel:connect("192.168.90.15", 22),
  {ok, Ch}  = ssh_tunnel:direct_stream_local(Pid, "/var/run/docker.sock"),
  ok = ssh_connection.send(Pid, Ch, Msg)