web chat

JavaScript/web-chat/index.js

@@ -0,0 +1,62 @@
+const fs = require('fs');
+const bodyParser = require('body-parser');
+const utils = require('./utils');
+let express = require('express');  
+let app = express();  
+let server = require('http').createServer(app);  
+let io = require('socket.io')(server);
+
+app.use('/', express.static(__dirname + '/client'));  
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+
+
+io.on('connection', (socket) => {  
+    let ip = socket.request.connection.remoteAddress;
+    if (ip.startsWith('::ffff:')) ip = ip.substring(7);
+    console.log(`${utils.currenttime()} new client connected at ${ip}`)
+
+    socket.on('outward', async function(data) {
+        if (ip == '86.11.58.84' || ip == '178.128.34.116') {
+            socket.emit('receive', 'gey lol');
+            return;
+        }
+
+        // let rate = await rateLimit(socket);
+        // if (rate == -1) return;
+        name = data.name;
+        message = data.message;
+
+        let validate = validateMessage(message, socket);
+        if (validate == -1) return;
+
+        console.log(`${utils.currenttime()} ${name} {${ip}}: ${message}`);
+
+        socket.broadcast.emit('receive', `${name}: ${message} \n`);
+        socket.emit('receive', `${name}: ${message} \n`);
+    });
+});
+
+function validateMessage(message) {
+    if (message.length >= 2000) {
+        socket.emit('receive', `YOU HAVE EXEDED THE 2000 CHARICTER LIMIT: MESSAGE NOT SENT \n`);
+    }
+}
+
+let requests = [];
+async function rateLimit(socket) {
+    if (requests.indexOf(socket.request.connection.remoteAddress) != -1) {
+        socket.emit('receive', `YOU ARE BEING RATE LIMITED, WAIT 1/2 SECOND\n`);
+        await utils.sleep('10');
+
+        while (requests.indexOf(socket.request.connection.remoteAddress) != -1) {
+            requests.splice(requests.indexOf(socket.request.connection.remoteAddress), 1);
+        }
+        return -1;
+    }
+    requests.push(socket.request.connection.remoteAddress);
+}
+
+app.listen(8082);
+server.listen(8083);
+console.log('Server listening on 8082 and sockets are listening on 8083')