updated tcp examples

tcp/echo.js

@@ -0,0 +1,17 @@
+// Load the net module to create a tcp server.
+var net = require('net');
+
+// Creates a new TCP server. The handler argument is automatically set as a listener for the 'connection' event
+var server = net.createServer(function (socket) {
+
+  // Every time someone connects, tell them hello and then close the connection.
+  console.log("Connection from " + socket.remoteAddress);
+  socket.end("Hello World\n");
+
+});
+
+// Fire up the server bound to port 7000 on localhost
+server.listen(7000, "localhost");
+
+// Put a friendly message on the terminal
+console.log("TCP server listening on port 7000 at localhost.");

tcp/server-echo.js → tcp/proxy-echo.js

@@ -1,7 +1,3 @@
-//https://gir.me.uk/simple-node-js-tcp-proxy/
-/*jshint node:true*/
-'use strict';
-
 var net = require('net');
 
 var proxyPort = 9020;
@@ -44,4 +40,13 @@ var server = net.createServer(function (socket) {
     socket.on('error', function (err) {
         console.log('Error: ' + err.soString());
     });
-});
+});
+
+
+server.listen(tcpServerPort);
+proxy.listen(proxyPort);
+
+console.log('Server Listening on ' + tcpServerPort +', Proxy Listening on ' + proxyPort);
+
+// telnet localhost 9030
+// telnet localhost 9020