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.

import 'package:chilkat/chilkat.dart';

void main() {
  final socket = CkSocket();

  // Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
  // not required.
  try {
    socket.sshOpenTunnel('ssh.example.com', 22);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate the SSH session before opening forwarded channels.
  // The SSH password should come from a secure source rather than being hard-coded.
  final sshPassword = 'mySshPassword';
  try {
    socket.sshAuthenticatePw('sshUser', sshPassword);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Close the SSH tunnel and terminate its forwarded channels.  This does not affect unrelated SSH
  // objects or connections.
  try {
    socket.sshCloseTunnel();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('SSH tunnel closed.');
}