From ef0ac7768d5dbd6a99c4126a1ed8b091f004d3bf Mon Sep 17 00:00:00 2001
From: Wu Cheng-Han <jacky_cute0808@hotmail.com>
Date: Fri, 3 Feb 2017 21:47:38 +0800
Subject: [PATCH] Update realtime to use timer to avoid memory leaks on busy
 tick

---
 lib/realtime.js | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/realtime.js b/lib/realtime.js
index def8f21..c1db688 100644
--- a/lib/realtime.js
+++ b/lib/realtime.js
@@ -354,9 +354,12 @@ function clearSocketQueue(queue, socket) {
 }
 
 function connectNextSocket() {
-    isConnectionBusy = false;
-    if (connectionSocketQueue.length > 0)
-        startConnection(connectionSocketQueue[0]);
+    setTimeout(function () {
+        isConnectionBusy = false;
+        if (connectionSocketQueue.length > 0) {
+            startConnection(connectionSocketQueue[0]);
+        }
+    }, 1);
 }
 
 function interruptConnection(socket, note, user) {
@@ -693,8 +696,11 @@ function operationCallback(socket, operation) {
         }
         note.tempUsers[userId] = Date.now();
     }
-    // save authorship
-    note.authorship = models.Note.updateAuthorshipByOperation(operation, userId, note.authorship);
+    // save authorship - use timer here because it's an O(n) complexity algorithm
+    setImmediate(function () {
+        note.authorship = models.Note.updateAuthorshipByOperation(operation, userId, note.authorship);
+    });
+}
 
 function updateHistory(userId, note, time) {
     var noteId = note.alias ? note.alias : LZString.compressToBase64(note.id);