1 files changed, 54 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core/Messaging/ChannelContract.cs b/src/DotNetOpenAuth.Core/Messaging/ChannelContract.cs
new file mode 100644
index 0000000..bf313ef
--- /dev/null
+++ b/src/DotNetOpenAuth.Core/Messaging/ChannelContract.cs
@@ -0,0 +1,54 @@
+//-----------------------------------------------------------------------
+// <copyright file="ChannelContract.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.Messaging {
+	using System;
+	using System.Collections.Generic;
+	using System.Diagnostics.Contracts;
+
+	/// <summary>
+	/// Code contract for the <see cref="Channel"/> class.
+	/// </summary>
+	[ContractClassFor(typeof(Channel))]
+	internal abstract class ChannelContract : Channel {
+		/// <summary>
+		/// Prevents a default instance of the ChannelContract class from being created.
+		/// </summary>
+		private ChannelContract()
+			: base(null, null) {
+		}
+
+		/// <summary>
+		/// Gets the protocol message that may be in the given HTTP response.
+		/// </summary>
+		/// <param name="response">The response that is anticipated to contain an protocol message.</param>
+		/// <returns>
+		/// The deserialized message parts, if found.  Null otherwise.
+		/// </returns>
+		/// <exception cref="ProtocolException">Thrown when the response is not valid.</exception>
+		protected override IDictionary<string, string> ReadFromResponseCore(IncomingWebResponse response) {
+			Requires.NotNull(response, "response");
+			throw new NotImplementedException();
+		}
+
+		/// <summary>
+		/// Queues a message for sending in the response stream where the fields
+		/// are sent in the response stream in querystring style.
+		/// </summary>
+		/// <param name="response">The message to send as a response.</param>
+		/// <returns>
+		/// The pending user agent redirect based message to be sent as an HttpResponse.
+		/// </returns>
+		/// <remarks>
+		/// This method implements spec V1.0 section 5.3.
+		/// </remarks>
+		protected override OutgoingWebResponse PrepareDirectResponse(IProtocolMessage response) {
+			Requires.NotNull(response, "response");
+			Contract.Ensures(Contract.Result<OutgoingWebResponse>() != null);
+			throw new NotImplementedException();
+		}
+	}
+}