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diff --git a/src/DotNetOpenAuth.OAuth2/OAuth2/Messages/EndUserAuthorizationRequest.cs b/src/DotNetOpenAuth.OAuth2/OAuth2/Messages/EndUserAuthorizationRequest.cs
deleted file mode 100644
index 45fa049..0000000
--- a/src/DotNetOpenAuth.OAuth2/OAuth2/Messages/EndUserAuthorizationRequest.cs
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@@ -1,114 +0,0 @@
-//-----------------------------------------------------------------------
-// <copyright file="EndUserAuthorizationRequest.cs" company="Outercurve Foundation">
-// Copyright (c) Outercurve Foundation. All rights reserved.
-// </copyright>
-//-----------------------------------------------------------------------
-
-namespace DotNetOpenAuth.OAuth2.Messages {
- using System;
- using System.Collections.Generic;
- using System.Diagnostics.CodeAnalysis;
- using System.Diagnostics.Contracts;
- using DotNetOpenAuth.Configuration;
- using DotNetOpenAuth.Messaging;
- using DotNetOpenAuth.OAuth2.ChannelElements;
-
- /// <summary>
- /// A message sent by a web application Client to the AuthorizationServer
- /// via the user agent to obtain authorization from the user and prepare
- /// to issue an access token to the client if permission is granted.
- /// </summary>
- [Serializable]
- public class EndUserAuthorizationRequest : MessageBase {
- /// <summary>
- /// Gets the grant type that the client expects of the authorization server.
- /// </summary>
- /// <value>Always <see cref="EndUserAuthorizationResponseType.AuthorizationCode"/>. Other response types are not supported.</value>
- [MessagePart(Protocol.response_type, IsRequired = true, Encoder = typeof(EndUserAuthorizationResponseTypeEncoder))]
- private const EndUserAuthorizationResponseType ResponseTypeConst = EndUserAuthorizationResponseType.AuthorizationCode;
-
- /// <summary>
- /// Initializes a new instance of the <see cref="EndUserAuthorizationRequest"/> class.
- /// </summary>
- /// <param name="authorizationEndpoint">The Authorization Server's user authorization URL to direct the user to.</param>
- /// <param name="version">The protocol version.</param>
- internal EndUserAuthorizationRequest(Uri authorizationEndpoint, Version version)
- : base(version, MessageTransport.Indirect, authorizationEndpoint) {
- Requires.NotNull(authorizationEndpoint, "authorizationEndpoint");
- Requires.NotNull(version, "version");
- this.HttpMethods = HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.PostRequest;
- this.Scope = new HashSet<string>(OAuthUtilities.ScopeStringComparer);
- }
-
- /// <summary>
- /// Initializes a new instance of the <see cref="EndUserAuthorizationRequest"/> class.
- /// </summary>
- /// <param name="authorizationServer">The authorization server.</param>
- internal EndUserAuthorizationRequest(AuthorizationServerDescription authorizationServer)
- : this(authorizationServer.AuthorizationEndpoint, authorizationServer.Version) {
- Requires.NotNull(authorizationServer, "authorizationServer");
- Requires.True(authorizationServer.Version != null, "authorizationServer");
- Requires.True(authorizationServer.AuthorizationEndpoint != null, "authorizationServer");
- }
-
- /// <summary>
- /// Gets the grant type that the client expects of the authorization server.
- /// </summary>
- public virtual EndUserAuthorizationResponseType ResponseType {
- get { return ResponseTypeConst; }
- }
-
- /// <summary>
- /// Gets or sets the identifier by which this client is known to the Authorization Server.
- /// </summary>
- [MessagePart(Protocol.client_id, IsRequired = true)]
- public string ClientIdentifier { get; set; }
-
- /// <summary>
- /// Gets or sets the callback URL.
- /// </summary>
- /// <value>
- /// An absolute URL to which the Authorization Server will redirect the User back after
- /// the user has approved the authorization request.
- /// </value>
- /// <remarks>
- /// REQUIRED unless a redirection URI has been established between the client and authorization server via other means. An absolute URI to which the authorization server will redirect the user-agent to when the end-user authorization step is completed. The authorization server MAY require the client to pre-register their redirection URI. The redirection URI MUST NOT include a query component as defined by [RFC3986] (Berners-Lee, T., Fielding, R., and L. Masinter, “Uniform Resource Identifier (URI): Generic Syntax,” January 2005.) section 3 if the state parameter is present.
- /// </remarks>
- [MessagePart(Protocol.redirect_uri, IsRequired = false)]
- public Uri Callback { get; set; }
-
- /// <summary>
- /// Gets or sets state of the client that should be sent back with the authorization response.
- /// </summary>
- /// <value>
- /// An opaque value that Clients can use to maintain state associated with this request.
- /// </value>
- /// <remarks>
- /// This data is proprietary to the client and should be considered an opaque string to the
- /// authorization server.
- /// </remarks>
- [MessagePart(Protocol.state, IsRequired = false)]
- public string ClientState { get; set; }
-
- /// <summary>
- /// Gets the scope of access being requested.
- /// </summary>
- /// <value>The scope of the access request expressed as a list of space-delimited strings. The value of the scope parameter is defined by the authorization server. If the value contains multiple space-delimited strings, their order does not matter, and each string adds an additional access range to the requested scope.</value>
- [MessagePart(Protocol.scope, IsRequired = false, Encoder = typeof(ScopeEncoder))]
- public HashSet<string> Scope { get; private set; }
-
- /// <summary>
- /// Checks the message state for conformity to the protocol specification
- /// and throws an exception if the message is invalid.
- /// </summary>
- /// <exception cref="ProtocolException">Thrown if the message is invalid.</exception>
- protected override void EnsureValidMessage() {
- base.EnsureValidMessage();
-
- ErrorUtilities.VerifyProtocol(
- DotNetOpenAuthSection.Messaging.RelaxSslRequirements || this.Recipient.IsTransportSecure(),
- OAuthStrings.HttpsRequired);
- ErrorUtilities.VerifyProtocol(this.Callback == null || this.Callback.IsAbsoluteUri, this, OAuthStrings.AbsoluteUriRequired, Protocol.redirect_uri);
- }
- }
-}