imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Transports/ITransportHeartBeat.cs

@@ -0,0 +1,38 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Microsoft.AspNet.SignalR.Transports
+{
+    /// <summary>
+    /// Manages tracking the state of connections.
+    /// </summary>
+    public interface ITransportHeartbeat
+    {
+        /// <summary>
+        /// Adds a new connection to the list of tracked connections.
+        /// </summary>
+        /// <param name="connection">The connection to be added.</param>
+        bool AddConnection(ITrackingConnection connection);
+
+        /// <summary>
+        /// Marks an existing connection as active.
+        /// </summary>
+        /// <param name="connection">The connection to mark.</param>
+        void MarkConnection(ITrackingConnection connection);
+
+        /// <summary>
+        /// Removes a connection from the list of tracked connections.
+        /// </summary>
+        /// <param name="connection">The connection to remove.</param>
+        void RemoveConnection(ITrackingConnection connection);
+
+        /// <summary>
+        /// Gets a list of connections being tracked.
+        /// </summary>
+        /// <returns>A list of connections.</returns>
+        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "This might be expensive.")]
+        IList<ITrackingConnection> GetConnections();
+    }
+}