Added MQTT support over WSS and multiplexed with MPS

mqttbroker.js

@@ -0,0 +1,54 @@
+/**
+* @description MQTT broker reference implementation based on AEDES
+* @author Joko Banu Sastriawan
+* @copyright Intel Corporation 2018-2019
+* @license Apache-2.0
+* @version v0.0.1
+*/
+
+
+module.exports.CreateMQTTBroker = function (parent, db, args) {
+
+    // internal objects container
+    var obj = {}
+    obj.parent = parent;
+    obj.db = db;
+    obj.args = args;
+
+    obj.aedes = require("aedes")();
+
+
+    // argument parsing -- tbd
+
+    // event handling and filtering
+    // authentication filter
+    obj.aedes.authenticate = function (client, username, password, callback) {
+        // accept all user
+        // TODO: add authentication handler
+        obj.parent.debug("mqtt","Authentication with "+username+":"+password);
+        callback(null, true);
+    }
+
+    // check if a client can publish a packet
+    obj.aedes.authorizePublish = function (client, packet, callback) {
+        //TODO: add authorized publish control
+        obj.parent.debug("mqtt","AuthorizePublish");
+        callback(null);
+    }
+
+    // check if a client can publish a packet
+    obj.aedes.authorizeSubscribe = function (client, sub, callback) {
+        //TODO: add subscription control here
+        obj.parent.debug("mqtt","AuthorizeSubscribe");
+        callback(null, sub);
+    }
+
+    // check if a client can publish a packet
+    obj.aedes.authorizeForward = function (client, packet) {
+        //TODO: add forwarding control
+        obj.parent.debug("mqtt","AuthorizeForward");
+        return packet;
+    }
+    obj.handle = obj.aedes.handle;    
+    return obj; 
+}