some fixes

node_app/public/index.html

@@ -14,6 +14,7 @@
     <script>
         const wsurl = 'ws://127.0.0.1:8081'
         const socket = new WebSocket(wsurl)
+        let devices;
 
         socket.onopen = () => {
             socket.send('new session')
@@ -27,6 +28,10 @@
             let msg = e.data.split(";", 3)
             if (msg[0] === 'error') show_error(msg[1])
             else if (msg[0] === 'device') {
+                if (!devices.includes(msg[1])){
+                    devices.push(msg[1])
+                    e.data
+                }
                 if (msg[2] === 'online') document.getElementById(msg[1]).style.display = "block"
                 else if (msg[2] === 'offline') document.getElementById(msg[1]).style.display = "none"
                 else document.getElementById('led1_title').innerText = `LED 1 (currently ${msg[1]}):`
@@ -48,12 +53,12 @@
             <div class="title2" id="led1_title">LED 1:</div>
             <button class="btn-green"
                  style="width: 10rem; position:relative; margin-top: 1rem; margin-left: calc(50% - 5rem);"
-                 onclick="socket.send('led1;on')">
+                 onclick="socket.send('device;led1;on')">
                 <div class="btn-text">on</div>
             </button>
             <button class="btn-red"
                  style="width: 10rem; position:relative; margin-top: 1rem; margin-left: calc(50% - 5rem);"
-                 onclick="socket.send('led1;off')">
+                 onclick="socket.send('device;led1;off')">
                 <div class="btn-text">off</div>
             </button>
         </div>

node_app/server.js

@@ -9,7 +9,7 @@ const XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest
 const host = 'http://127.0.0.1:8080/'
 const outpath = ['sym', '', 'manifest.json', 'admin', 'stats', 'analytics']
 
-//redis clientconsole.log(device.status)
+//redis client
 const redis_cli = redis.createClient({
     host: 'redis',
     port: 6379
@@ -101,29 +101,29 @@ let check_devices = setInterval(to => {
 wss.on('connection', ws => {
     ws.on('message', message => {
         console.log(`Received message => ${message}`)
-        let msg = message.split(";", 2)
-        if (msg[0] === 'led1') {
-            if (msg[1] === '') ws.send('error;try again')
-            else if (msg[1] === 'on' || msg[1] === "off"){
-                let xhr = new XMLHttpRequest();
-                xhr.onreadystatechange = function() {
-                    if (xhr.readyState === 4 && xhr.status === 200) {
-                        wss.clients.forEach(clients => {
-                            clients.send(message)
-                        })
+        let msg = message.split(";", 3)
+        if (msg[0] === 'device') {
+            redis_cli.hget(`device;${msg[1]}`, "ip", function(err, ip) {
+                if(err) console.log(err)
+                if(ip){
+                    let xhr = new XMLHttpRequest();
+                    xhr.onreadystatechange = function() {
+                        if (xhr.readyState === 4 && xhr.status === 200) {
+                            wss.clients.forEach(clients => {
+                                clients.send(message)
+                            })
+                        }
                     }
+                    xhr.open('GET', `http://[${ip}/${msg[1]}`, true);
+                    xhr.send();
+                    setTimeout(to => {if (xhr.readyState !== 4){
+                        ws.send(`error;device "${msg[1]}" took too long to reach`)
+                        ws.send(`device;${msg[1]};offline`)
+                        xhr.abort()
+                    }}, 1500)
                 }
-                xhr.open('GET', `http://192.168.1.210/${msg[1]}`, true);
-                xhr.timeout = 1000;
-                xhr.ontimeout = function(e) {ws.send('error;device "led1" is offline')}
-                xhr.send();
-                setTimeout(to => {if (xhr.readyState !== 4){
-                    ws.send('error;device "led1" took too long to reach')
-                    ws.send('device;led1;offline')
-                    xhr.abort()
-                }}, 1500)
-            }else ws.send('error;try again')
-        }
+            })
+        }else ws.send('error;try again')
     })
     ws.send('websocket connected')
     //on new connection
@@ -137,19 +137,3 @@ wss.on('connection', ws => {
         })}
     })
 })
-
-//random key
-function get_key(length) {
-    let forbidden = false; let output = ''
-    let characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
-    do{
-        for (let i = 0; i < length; i++ )
-            output += characters.charAt(Math.floor(Math.random() * characters.length))
-        for (let i = 0; i < output.length; i++) if (output === outpath[i]) forbidden = true
-        redis_cli.hget("surl;"+output, "url", function(err, obj) {
-            if(err) console.log(err)
-            if(obj) forbidden = true
-        })
-    } while (forbidden)
-    return output
-}