Change default socket.io timeout

app.js

@@ -90,7 +90,11 @@ if (runhttps) {
     });
 }
 
-var io = server(httpserv,{path: '/wetty/socket.io'});
+var io = server(httpserv, {
+    path: '/wetty/socket.io',
+    pingTimeout: 7000,
+    pingInterval: 3000
+});
 io.on('connection', function(socket) {
     var sshuser = '';
     var request = socket.request;