IPC removed, replaced by WS

BackendServers/webSocketsServer.js

@@ -0,0 +1,112 @@
+exports.newWebSocketsServer = function newWebSocketsServer(EVENTS_SERVER) {
+
+    const MODULE = "Web Sockets Server"
+    const LOG_INFO = false
+
+    let thisObject = {
+        initialize: initialize,
+        finalize: finalize,
+        run: run
+    }
+
+    require('dotenv').config()
+    const WEB_SOCKET = require('ws')
+    let socketServer
+    let port = process.env.WEB_SOCKETS_SERVER_PORT  
+
+    return thisObject
+
+    function finalize() {
+
+    }
+
+    function initialize() {
+
+    }
+
+    function run() {
+       setUpWebSocketServer()
+    }
+
+    function setUpWebSocketServer() {
+        try {
+            socketServer = new WEB_SOCKET.Server({ port: port })
+
+            socketServer.on('connection', onConnection)
+
+            function onConnection(socket) {
+
+                let lastNonce = -1
+                if (LOG_INFO === true) {
+                    console.log('New Websocket Connection.')
+                }
+
+                socket.on('message', onMenssage)
+
+                function onMenssage(message){
+
+                    try {
+                        if (LOG_INFO === true) {
+                            console.log('Message Received: ' + message)
+                        }
+
+                        let messageArray = message.split('|')
+
+                        let origin = messageArray[0]
+                        let nonce = messageArray[1]
+                        let messageToEventServer = messageArray[2]
+
+                        if (origin === 'Web Browser') {
+                            if (isNaN(nonce) || nonce === "") {
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce is not a Number. message = ' + message)
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce is not a Number. nonce = ' + nonce)
+                                return
+                            }
+
+                            if (nonce === "1") { // this happens once the browser is restarted, and the server is running since a previous session.
+                                lastNonce = 0
+                            }
+
+                            if (Number(nonce) < Number(lastNonce)) {
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce received is less than Last Nonce. message = ' + message)
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce received is less than Last Nonce. nonce = ' + nonce)
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce received is less than Last Nonce. lastNonce = ' + lastNonce)
+                                return
+                            }
+
+                            lastNonce = nonce
+
+                            try {
+                                let jsonCheck = JSON.parse(messageToEventServer)
+                            } catch (err) {
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Message received from the browser is not a valid JSON. message = ' + message)
+                                console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Message received from the browser is not a valid JSON. messageToEventServer = ' + messageToEventServer)
+                                return
+                            }
+
+                            let acknowledgeMessage = {
+                                action: 'Acknowledge',
+                                nonce: nonce
+                            }
+
+                            socket.send(JSON.stringify(acknowledgeMessage))
+                        }
+
+
+                        EVENTS_SERVER.onMessage(messageToEventServer, onResponse)
+
+                        function onResponse(message) {
+                            socket.send(message)
+                        }
+                    } catch (err) {
+                        console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> Nonce received is less than Last Nonce. err = ' + err.stack)
+                    }
+                }
+            }
+
+            console.log('Web Sockets Server Started.')
+        } catch (err) {
+            console.log('[ERROR] BackendServers -> Web Sockets Server -> run -> setUpWebSocketServer -> err.message = ' + err.message)
+        }
+    }
+}