1 files changed, 68 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectErrorResponse.cs b/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectErrorResponse.cs
new file mode 100644
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--- /dev/null
+++ b/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectErrorResponse.cs
@@ -0,0 +1,68 @@
+//-----------------------------------------------------------------------
+// <copyright file="DirectErrorResponse.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.OpenId.Messages {
+	using System;
+	using System.Net;
+	using DotNetOpenAuth.Messaging;
+
+	/// <summary>
+	/// A message sent from a Provider to a Relying Party in response to a direct message request that resulted in an error.
+	/// </summary>
+	/// <remarks>
+	/// This message must be sent with an HTTP status code of 400.
+	/// This class satisfies OpenID 2.0 section 5.1.2.2.
+	/// </remarks>
+	internal class DirectErrorResponse : DirectResponseBase, IErrorMessage, IHttpDirectResponse {
+		/// <summary>
+		/// Initializes a new instance of the <see cref="DirectErrorResponse"/> class.
+		/// </summary>
+		/// <param name="responseVersion">The OpenID version of the response message.</param>
+		/// <param name="originatingRequest">The originating request.</param>
+		internal DirectErrorResponse(Version responseVersion, IDirectedProtocolMessage originatingRequest)
+			: base(responseVersion, originatingRequest) {
+		}
+
+		#region IHttpDirectResponse Members
+
+		/// <summary>
+		/// Gets the HTTP status code that the direct respones should be sent with.
+		/// </summary>
+		/// <value><see cref="HttpStatusCode.BadRequest"/></value>
+		HttpStatusCode IHttpDirectResponse.HttpStatusCode {
+			get { return HttpStatusCode.BadRequest; }
+		}
+
+		/// <summary>
+		/// Gets the HTTP headers to add to the response.
+		/// </summary>
+		/// <value>May be an empty collection, but must not be <c>null</c>.</value>
+		WebHeaderCollection IHttpDirectResponse.Headers {
+			get { return new WebHeaderCollection(); }
+		}
+
+		#endregion
+
+		/// <summary>
+		/// Gets or sets a human-readable message indicating why the request failed. 
+		/// </summary>
+		[MessagePart("error", IsRequired = true, AllowEmpty = true)]
+		public string ErrorMessage { get; set; }
+
+		/// <summary>
+		/// Gets or sets the contact address for the administrator of the server. 
+		/// </summary>
+		/// <value>The contact address may take any form, as it is intended to be displayed to a person. </value>
+		[MessagePart("contact", IsRequired = false, AllowEmpty = true)]
+		public string Contact { get; set; }
+
+		/// <summary>
+		/// Gets or sets a reference token, such as a support ticket number or a URL to a news blog, etc. 
+		/// </summary>
+		[MessagePart("reference", IsRequired = false, AllowEmpty = true)]
+		public string Reference { get; set; }
+	}
+}