Close an SSH Tunnel

See more Socket/SSL/TLS Examples

Demonstrates Socket.SshCloseTunnel, which closes the SSH tunnel opened by SshOpenTunnel and terminates its forwarded channels.

func chilkatTest() {
    var success: Bool = false

    let socket = CkoSocket()!

    //  Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
    //  not required.
    success = socket.sshOpenTunnel(sshHostname: "ssh.example.com", sshPort: 22)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    //  Authenticate the SSH session before opening forwarded channels.
    //  The SSH password should come from a secure source rather than being hard-coded.
    var sshPassword: String? = "mySshPassword"
    success = socket.sshAuthenticatePw(sshLogin: "sshUser", sshPassword: sshPassword)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    //  Close the SSH tunnel and terminate its forwarded channels.  This does not affect unrelated SSH
    //  objects or connections.
    success = socket.sshCloseTunnel()
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("SSH tunnel closed.")

}