Try to solve realtime connection get stock when lots of client try to connect at same moment

Author: jackycute

lib/realtime.js

@@ -329,7 +329,11 @@ var isDisconnectBusy = false;
 var disconnectSocketQueue = [];
 
 function finishConnection(socket, note, user) {
-    if (!socket || !note || !user) return;
+    if (!socket || !note || !user) {
+        connectionSocketQueue.pop();
+        isConnectionBusy = false;
+        return;
+    }
     //check view permission
     if (note.permission == 'private') {
         if (socket.request.user && socket.request.user.logged_in && socket.request.user.id == note.owner) {