Well now, what could that be for?

desktop/sources/index.html

@@ -17,6 +17,7 @@
     <script type="text/javascript" src="scripts/tool.js"></script>
     <script type="text/javascript" src="scripts/generator.js"></script>
     <script type="text/javascript" src="scripts/picker.js"></script>
+    <script type="text/javascript" src="scripts/listener.js"></script>
     <!-- Styles -->
     <link rel="stylesheet" type="text/css" href="links/reset.css"/>
     <link rel="stylesheet" type="text/css" href="links/fonts.css"/>

desktop/sources/scripts/dotgrid.js

@@ -24,6 +24,7 @@ function Dotgrid (width, height) {
     this.interface = new Interface(this)
     this.picker = new Picker(this)
     this.cursor = new Cursor(this)
+    this.listener = new Listener(this)
 
     host.appendChild(this.renderer.el)
 

desktop/sources/scripts/listener.js

@@ -0,0 +1,27 @@
+'use strict'
+
+const dgram = require('dgram')
+
+function Listener (dotgrid) {
+  this.server = dgram.createSocket('udp4')
+
+  this.start = function () {
+
+  }
+
+  this.server.on('error', (err) => {
+    console.log(`server error:\n${err.stack}`)
+    server.close()
+  })
+
+  this.server.on('message', (msg, rinfo) => {
+    console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`)
+  })
+
+  this.server.on('listening', () => {
+    const address = this.server.address()
+    console.log(`server listening ${address.address}:${address.port}`)
+  })
+
+  this.server.bind(49160)
+}