imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Messaging/ScaleoutConfiguration.cs

@@ -0,0 +1,39 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System;
+
+namespace Microsoft.AspNet.SignalR.Messaging
+{
+    /// <summary>
+    /// Common settings for scale-out message bus implementations.
+    /// </summary>
+    public class ScaleoutConfiguration
+    {
+        public static readonly int DisableQueuing = 0;
+
+        private int _maxQueueLength;
+
+        /// <summary>
+        /// The maximum length of the outgoing send queue. Messages being sent to the backplane are queued
+        /// up to this length. After the max length is reached, further sends will throw an <see cref="System.InvalidOperationException">InvalidOperationException</see>.
+        /// Set to <see cref="Microsoft.AspNet.SignalR.Messaging.ScaleoutConfiguration.DisableQueuing">ScaleoutConfiguration.DisableQueuing</see> to disable queing.
+        /// Defaults to disabled.
+        /// </summary>
+        public virtual int MaxQueueLength
+        {
+            get
+            {
+                return _maxQueueLength;
+            }
+            set
+            {
+                if (value < 0)
+                {
+                    throw new ArgumentOutOfRangeException("value");
+                }
+
+                _maxQueueLength = value;
+            }
+        }
+    }
+}