1 files changed, 67 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/IIdentifierDiscoveryService.cs b/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/IIdentifierDiscoveryService.cs
new file mode 100644
index 0000000..fcea327
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+++ b/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/IIdentifierDiscoveryService.cs
@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------
+// <copyright file="IIdentifierDiscoveryService.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.OpenId {
+	using System;
+	using System.Collections.Generic;
+	using System.Diagnostics.CodeAnalysis;
+	using System.Diagnostics.Contracts;
+	using System.Linq;
+	using System.Text;
+	using DotNetOpenAuth.Messaging;
+	using DotNetOpenAuth.OpenId.RelyingParty;
+
+	/// <summary>
+	/// A module that provides discovery services for OpenID identifiers.
+	/// </summary>
+	[ContractClass(typeof(IIdentifierDiscoveryServiceContract))]
+	public interface IIdentifierDiscoveryService {
+		/// <summary>
+		/// Performs discovery on the specified identifier.
+		/// </summary>
+		/// <param name="identifier">The identifier to perform discovery on.</param>
+		/// <param name="requestHandler">The means to place outgoing HTTP requests.</param>
+		/// <param name="abortDiscoveryChain">if set to <c>true</c>, no further discovery services will be called for this identifier.</param>
+		/// <returns>
+		/// A sequence of service endpoints yielded by discovery.  Must not be null, but may be empty.
+		/// </returns>
+		[SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", MessageId = "2#", Justification = "By design")]
+		[Pure]
+		IEnumerable<IdentifierDiscoveryResult> Discover(Identifier identifier, IDirectWebRequestHandler requestHandler, out bool abortDiscoveryChain);
+	}
+
+	/// <summary>
+	/// Code contract for the <see cref="IIdentifierDiscoveryService"/> interface.
+	/// </summary>
+	[ContractClassFor(typeof(IIdentifierDiscoveryService))]
+	internal abstract class IIdentifierDiscoveryServiceContract : IIdentifierDiscoveryService {
+		/// <summary>
+		/// Prevents a default instance of the <see cref="IIdentifierDiscoveryServiceContract"/> class from being created.
+		/// </summary>
+		private IIdentifierDiscoveryServiceContract() {
+		}
+
+		#region IDiscoveryService Members
+
+		/// <summary>
+		/// Performs discovery on the specified identifier.
+		/// </summary>
+		/// <param name="identifier">The identifier to perform discovery on.</param>
+		/// <param name="requestHandler">The means to place outgoing HTTP requests.</param>
+		/// <param name="abortDiscoveryChain">if set to <c>true</c>, no further discovery services will be called for this identifier.</param>
+		/// <returns>
+		/// A sequence of service endpoints yielded by discovery.  Must not be null, but may be empty.
+		/// </returns>
+		IEnumerable<IdentifierDiscoveryResult> IIdentifierDiscoveryService.Discover(Identifier identifier, IDirectWebRequestHandler requestHandler, out bool abortDiscoveryChain) {
+			Contract.Requires<ArgumentNullException>(identifier != null);
+			Contract.Requires<ArgumentNullException>(requestHandler != null);
+			Contract.Ensures(Contract.Result<IEnumerable<IdentifierDiscoveryResult>>() != null);
+			throw new NotImplementedException();
+		}
+
+		#endregion
+	}
+}