Time for action – running a WebSocket server

1. Create a project folder for our code. Inside it, create a new directory named server.

2. Use a terminal or the shell command prompt to change the directory into our newly created folder.

3. Type the following command that will install a WebSocket server:

   npm install --save ws

4. Create a new file named server.js under the server directory with the following content:

   var port = 8000;
   
   // Server code
   var WebSocketServer = require('ws').Server;
   var server = new WebSocketServer({ port: port });
   
   server.on('connection', function(socket) {
     console.log("A connection established");
   });
   
   console.log("WebSocket server is running.");
   console.log("Listening to port " + port + ".");

5. Open the terminal and change to the server directory.

6. Type the following command to execute the server:

   node server.js

7. You should get the following result if this works:

   $ node server.js 
   WebSocket server is running.
   Listening to port 8000.

What just happened?

We just created a simple server logic...