Open an SSH Tunnel

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Demonstrates Socket.SshOpenTunnel, which connects to an SSH server and initializes an SSH tunneling session, then authenticates it.

Background. An SSH tunnel lets a socket reach a destination host through an SSH server using port forwarding. The sequence is: open the tunnel, authenticate, then open forwarded channels to destinations.

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bool success = false;

Chilkat.Socket socket = new Chilkat.Socket();

//  Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
//  not required.
success = socket.SshOpenTunnel("ssh.example.com",22);
if (success == false) {
    Debug.WriteLine(socket.LastErrorText);
    return;
}

//  After the tunnel is open, authenticate before opening forwarded channels.
//  The SSH password should come from a secure source rather than being hard-coded.
string sshPassword = "mySshPassword";
success = socket.SshAuthenticatePw("sshUser",sshPassword);
if (success == false) {
    Debug.WriteLine(socket.LastErrorText);
    return;
}

Debug.WriteLine("SSH tunnel established and authenticated.");