server.js

const net = require("net");
const port = process.env.PORT ?? 3000;

const server = net.createServer((socket) => {
  console.log("Client connected");

  socket.on("data", (data) => {
    console.log(`Server Received msg: ${data}`);
    socket.write(`Server has received your message: ${data}`);
  });

  socket.on("end", () => {
    console.log("Client disconnected");
  });
});

server.listen(port, () => {
  console.log(`Server listening on port ${port}`);
});