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//-----------------------------------------------------------------------
// <copyright file="AccessTokenRequestBase.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth2.Messages {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DotNetOpenAuth.Configuration;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2.ChannelElements;
/// <summary>
/// A message sent from the client to the authorization server to exchange a previously obtained grant for an access token.
/// </summary>
public abstract class AccessTokenRequestBase : AuthenticatedClientRequestBase, IAccessTokenRequest {
/// <summary>
/// Initializes a new instance of the <see cref="AccessTokenRequestBase"/> class.
/// </summary>
/// <param name="tokenEndpoint">The Authorization Server's access token endpoint URL.</param>
/// <param name="version">The version.</param>
protected AccessTokenRequestBase(Uri tokenEndpoint, Version version)
: base(tokenEndpoint, version) {
this.HttpMethods = HttpDeliveryMethods.PostRequest;
}
/// <summary>
/// Gets the scope of operations the client is allowed to invoke.
/// </summary>
HashSet<string> IAccessTokenRequest.Scope {
get { return this.RequestedScope; }
}
/// <summary>
/// Gets a value indicating whether the client requesting the access token has authenticated itself.
/// </summary>
/// <value>
/// Always true, because of our base class.
/// </value>
bool IAccessTokenRequest.ClientAuthenticated {
get { return true; }
}
/// <summary>
/// Gets the type of the grant.
/// </summary>
/// <value>The type of the grant.</value>
[MessagePart(Protocol.grant_type, IsRequired = true, Encoder = typeof(GrantTypeEncoder))]
internal abstract GrantType GrantType { get; }
/// <summary>
/// Gets the scope of operations the client is allowed to invoke.
/// </summary>
protected abstract HashSet<string> RequestedScope { get; }
/// <summary>
/// Checks the message state for conformity to the protocol specification
/// and throws an exception if the message is invalid.
/// </summary>
/// <remarks>
/// <para>Some messages have required fields, or combinations of fields that must relate to each other
/// in specialized ways. After deserializing a message, this method checks the state of the
/// message to see if it conforms to the protocol.</para>
/// <para>Note that this property should <i>not</i> check signatures or perform any state checks
/// outside this scope of this particular message.</para>
/// </remarks>
/// <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);
}
}
}
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