ipc.js

const net = require('net');

const server = net.createServer((c) => {
  // 'connection' listener
  console.log('client connected');
  c.on('end', () => {
    console.log('client disconnected');
  });
  c.write('hello');
  c.pipe(c);
});

server.on('error', (err) => {
  throw err;
});

server.listen('/tmp/echo.sock', () => {
  console.log('server bound');
});

const client = net.createConnection({ 
  path: '/tmp/echo.sock' 
}, () => {
  //'connect' listener
  console.log('connected to server!');
  client.write('world!\r\n');
});

client.on('data', (data) => {
  console.log(data.toString());
  client.end();
});

client.on('end', () => {
  console.log('disconnected from server');
});

proxy.js

var proxy = require('dtls-proxy');

const options = {
  backend: 'localhost:3000', // or '/tmp/backend.sock'
  key:  fs.readFileSync('server-key.pem'),
  cert: fs.readFileSync('server-cert.pem'),
};

const server = proxy.createServer(options);
server.listen(5683);