1 files changed, 87 insertions, 0 deletions
diff --git a/src/DotNetOAuth/OAuth/Protocol.cs b/src/DotNetOAuth/OAuth/Protocol.cs
new file mode 100644
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+++ b/src/DotNetOAuth/OAuth/Protocol.cs
@@ -0,0 +1,87 @@
+//-----------------------------------------------------------------------
+// <copyright file="Protocol.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOAuth.OAuth {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using DotNetOAuth.Messaging;
+
+	/// <summary>
+	/// Constants used in the OAuth protocol.
+	/// </summary>
+	/// <remarks>
+	/// OAuth Protocol Parameter names and values are case sensitive. Each OAuth Protocol Parameters MUST NOT appear more than once per request, and are REQUIRED unless otherwise noted,
+	/// per OAuth 1.0 section 5.
+	/// </remarks>
+	internal class Protocol {
+		/// <summary>
+		/// The namespace to use for V1.0 of the protocol.
+		/// </summary>
+		internal const string DataContractNamespaceV10 = "http://oauth.net/core/1.0/";
+
+		/// <summary>
+		/// Gets the <see cref="Protocol"/> instance with values initialized for V1.0 of the protocol.
+		/// </summary>
+		internal static readonly Protocol V10 = new Protocol {
+			dataContractNamespace = DataContractNamespaceV10,
+		};
+
+		/// <summary>
+		/// The namespace to use for this version of the protocol.
+		/// </summary>
+		private string dataContractNamespace;
+
+		/// <summary>
+		/// The prefix used for all key names in the protocol.
+		/// </summary>
+		private string parameterPrefix = "oauth_";
+
+		/// <summary>
+		/// The scheme to use in Authorization header message requests.
+		/// </summary>
+		private string authorizationHeaderScheme = "OAuth";
+
+		/// <summary>
+		/// Gets the default <see cref="Protocol"/> instance.
+		/// </summary>
+		internal static Protocol Default { get { return V10; } }
+
+		/// <summary>
+		/// Gets the namespace to use for this version of the protocol.
+		/// </summary>
+		internal string DataContractNamespace {
+			get { return this.dataContractNamespace; }
+		}
+
+		/// <summary>
+		/// Gets the prefix used for all key names in the protocol.
+		/// </summary>
+		internal string ParameterPrefix {
+			get { return this.parameterPrefix; }
+		}
+
+		/// <summary>
+		/// Gets the scheme to use in Authorization header message requests.
+		/// </summary>
+		internal string AuthorizationHeaderScheme {
+			get { return this.authorizationHeaderScheme; }
+		}
+
+		/// <summary>
+		/// Gets an instance of <see cref="Protocol"/> given a <see cref="Version"/>.
+		/// </summary>
+		/// <param name="version">The version of the protocol that is desired.</param>
+		/// <returns>The <see cref="Protocol"/> instance representing the requested version.</returns>
+		internal static Protocol Lookup(Version version) {
+			switch (version.Major) {
+				case 1: return Protocol.V10;
+				default: throw new ArgumentOutOfRangeException("version");
+			}
+		}
+	}
+}