Route Socket Connections through an SSH Object

See more Socket/SSL/TLS Examples

Demonstrates Socket.UseSsh, which configures a socket to route subsequent Connect calls through an already connected and authenticated Ssh object using SSH port forwarding.

import { Socket, Ssh } from '@chilkat/react-native'

async function chilkatExample() {
  const ssh = new Ssh();

  // Connect and authenticate a standalone SSH object.
  try {
    await ssh.connectAsync('ssh.example.com', 22);
  } catch {
    console.log(ssh.lastErrorText);
    return;
  }

  // The SSH password should come from a secure source rather than being hard-coded.
  const sshPassword = 'mySshPassword';
  try {
    await ssh.authenticatePwAsync('sshUser', sshPassword);
  } catch {
    console.log(ssh.lastErrorText);
    return;
  }

  const socket = new Socket();

  // Route subsequent Connect calls through the already connected and authenticated SSH object.  The
  // destination is reached by SSH port forwarding rather than by a direct TCP connection.
  try {
    socket.useSsh(ssh);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  // Connect to the destination through the SSH tunnel.
  const bTls = false;
  const maxWaitMs = 5000;
  try {
    await socket.connectAsync('db.internal', 5432, bTls, maxWaitMs);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  console.log('Connected to the destination through the SSH tunnel.');
}