Example node.js websocket server, to be used with the Contiki websocket client

examples/websockets/node/Makefile

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+install:
+	npm install websocket
+
+
+run:
+	nodejs example-server.js

examples/websockets/node/example-server.js

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+"use strict";
+
+var serverPort = 8080;
+
+var websocket = require('websocket').server;
+var http = require('http');
+
+var server = http.createServer(function(request, response) {
+    response.writeHead(200, {'Content-Type': 'text/plain'});
+    response.write('This is a websocket server, not intended for http\n');
+    response.end();
+});
+
+server.listen(serverPort, function() {
+    console.log('Server is listening on port ' + serverPort);
+});
+
+var wsServer = new websocket({
+    httpServer: server
+});
+
+
+var connections = [];
+
+function broadcastMessage(message) {
+    for (var i = 0; i < connections.length; i++) {
+        connections[i].sendUTF(message);
+    }
+}
+
+wsServer.on('request', function(request) {
+    /* Save the connection */
+    var connection = request.accept(null, request.origin);
+
+    /* Store the connection in the list of connections */
+    var connectionIndex = connections.push(connection) - 1;
+
+    console.log('Connection from ' + connection.remoteAddress + '.');
+
+    broadcastMessage('Connection from ' + connection.remoteAddress + '.');
+
+    connection.on('message', function(message) {
+        if (message.type === 'utf8') {
+            console.log((new Date()) + ' Message received: ' +
+                        message.utf8Data);
+            broadcastMessage(message.utf8Data);
+        }
+    });
+
+    // user disconnected
+    connection.on('close', function(connection) {
+        console.log((new Date()) + ' Connection lost: ' +
+                    connection.remoteAddress);
+        connections.splice(connectionIndex, 1);
+    });
+
+});