1 files changed, 27 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core/Messaging/IProtocolMessage.cs b/src/DotNetOpenAuth.Core/Messaging/IProtocolMessage.cs
new file mode 100644
index 0000000..cf43360
--- /dev/null
+++ b/src/DotNetOpenAuth.Core/Messaging/IProtocolMessage.cs
@@ -0,0 +1,27 @@
+//-----------------------------------------------------------------------
+// <copyright file="IProtocolMessage.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.Messaging {
+	using System;
+	using System.Collections.Generic;
+	using System.Text;
+
+	/// <summary>
+	/// The interface that classes must implement to be serialized/deserialized
+	/// as protocol messages.
+	/// </summary>
+	public interface IProtocolMessage : IMessage {
+		/// <summary>
+		/// Gets the level of protection this message requires.
+		/// </summary>
+		MessageProtections RequiredProtection { get; }
+
+		/// <summary>
+		/// Gets a value indicating whether this is a direct or indirect message.
+		/// </summary>
+		MessageTransport Transport { get; }
+	}
+}