1 files changed, 53 insertions, 0 deletions
diff --git a/src/DotNetOAuth/OAuth/Messages/AuthorizedTokenRequest.cs b/src/DotNetOAuth/OAuth/Messages/AuthorizedTokenRequest.cs
new file mode 100644
index 0000000..8f76046
--- /dev/null
+++ b/src/DotNetOAuth/OAuth/Messages/AuthorizedTokenRequest.cs
@@ -0,0 +1,53 @@
+//-----------------------------------------------------------------------
+// <copyright file="AuthorizedTokenRequest.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOAuth.OAuth.Messages {
+	using System.Globalization;
+	using DotNetOAuth.Messaging;
+
+	/// <summary>
+	/// A direct message sent by the Consumer to exchange an authorized Request Token
+	/// for an Access Token and Token Secret.
+	/// </summary>
+	/// <remarks>
+	/// The class is sealed because the OAuth spec forbids adding parameters to this message.
+	/// </remarks>
+	public sealed class AuthorizedTokenRequest : SignedMessageBase, ITokenContainingMessage {
+		/// <summary>
+		/// Initializes a new instance of the <see cref="AuthorizedTokenRequest"/> class.
+		/// </summary>
+		/// <param name="serviceProvider">The URI of the Service Provider endpoint to send this message to.</param>
+		internal AuthorizedTokenRequest(MessageReceivingEndpoint serviceProvider)
+			: base(MessageTransport.Direct, serviceProvider) {
+		}
+
+		/// <summary>
+		/// Gets or sets the Token.
+		/// </summary>
+		string ITokenContainingMessage.Token {
+			get { return this.RequestToken; }
+			set { this.RequestToken = value; }
+		}
+
+		/// <summary>
+		/// Gets or sets the unauthorized Request Token used to obtain authorization.
+		/// </summary>
+		[MessagePart("oauth_token", IsRequired = true)]
+		internal string RequestToken { get; set; }
+
+		/// <summary>
+		/// Checks the message state for conformity to the protocol specification
+		/// and throws an exception if the message is invalid.
+		/// </summary>
+		protected override void EnsureValidMessage() {
+			base.EnsureValidMessage();
+
+			if (this.ExtraData.Count > 0) {
+				throw new ProtocolException(string.Format(CultureInfo.CurrentCulture, Strings.MessageNotAllowedExtraParameters, GetType().Name));
+			}
+		}
+	}
+}