From f4f763f1361ae58dadda41ca551c9039890e5534 Mon Sep 17 00:00:00 2001
From: David Fowler <davidfowl@gmail.com>
Date: Sat, 1 Oct 2016 03:29:49 -0700
Subject: [PATCH] Only run next queued task if the previous was successful

---
 src/Microsoft.AspNetCore.Sockets/TaskQueue.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.AspNetCore.Sockets/TaskQueue.cs b/src/Microsoft.AspNetCore.Sockets/TaskQueue.cs
index 5fbbb704cb..09423769eb 100644
--- a/src/Microsoft.AspNetCore.Sockets/TaskQueue.cs
+++ b/src/Microsoft.AspNetCore.Sockets/TaskQueue.cs
@@ -41,7 +41,15 @@ namespace Microsoft.AspNetCore.Sockets
                     return _lastQueuedTask;
                 }
 
-                var newTask = _lastQueuedTask.ContinueWith((t, s1) => taskFunc(s1), state).Unwrap();
+                var newTask = _lastQueuedTask.ContinueWith((t, s1) =>
+                {
+                    if (t.IsFaulted || t.IsCanceled)
+                    {
+                        return t;
+                    }
+                    return taskFunc(s1);
+                }, 
+                state).Unwrap();
                 _lastQueuedTask = newTask;
                 return newTask;
             }