WebSockets server tutorial

server.js

socket.on('data', buffer => {
  const message = parseMessage(buffer);
  if (message) {
  // For our convenience, so we can see what the client sent
  console.log(message);
  // We'll just send a hardcoded message in this example 
  socket.write(constructReply({ message: 'Hello from the server!' })); 
  } else if (message === null) { 
      console.log('WebSocket connection closed by the client.'); 
  }
});
function constructReply(data) {
  // TODO: Construct a WebSocket frame Node.js socket buffer
}
function parseMessage(buffer) {
  // TODO: Parse the WebSocket frame from the Node.js socket buffer
}