imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Hubs/StatefulSignalProxy.cs

@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Dynamic;
+using System.Threading.Tasks;
+using Microsoft.AspNet.SignalR.Infrastructure;
+
+namespace Microsoft.AspNet.SignalR.Hubs
+{
+    public class StatefulSignalProxy : SignalProxy
+    {
+        private readonly StateChangeTracker _tracker;
+
+        public StatefulSignalProxy(Func<string, ClientHubInvocation, IList<string>, Task> send, string signal, string hubName, string prefix, StateChangeTracker tracker)
+            : base(send, signal, prefix, hubName, ListHelper<string>.Empty)
+        {
+            _tracker = tracker;
+        }
+
+        [SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", MessageId = "0", Justification = "The compiler generates calls to invoke this")]
+        public override bool TrySetMember(SetMemberBinder binder, object value)
+        {
+            _tracker[binder.Name] = value;
+            return true;
+        }
+
+        [SuppressMessage("Microsoft.Design", "CA1062:Validate arguments of public methods", MessageId = "0", Justification = "The compiler generates calls to invoke this")]
+        public override bool TryGetMember(GetMemberBinder binder, out object result)
+        {
+            result = _tracker[binder.Name];
+            return true;
+        }
+
+        protected override ClientHubInvocation GetInvocationData(string method, object[] args)
+        {
+            return new ClientHubInvocation
+            {
+                Hub = HubName,
+                Method = method,
+                Args = args,
+                Target = Signal,
+                State = _tracker.GetChanges()
+            };
+        }
+    }
+}