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//-----------------------------------------------------------------------
// <copyright file="OAuthHttpMethodBindingElement.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth.ChannelElements {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using DotNetOpenAuth.Messaging;
/// <summary>
/// Sets the HTTP Method property on a signed message before the signing module gets to it.
/// </summary>
internal class OAuthHttpMethodBindingElement : IChannelBindingElement {
#region IChannelBindingElement Members
/// <summary>
/// Gets the protection offered (if any) by this binding element.
/// </summary>
public MessageProtections Protection {
get { return MessageProtections.None; }
}
/// <summary>
/// Gets or sets the channel that this binding element belongs to.
/// </summary>
public Channel Channel { get; set; }
/// <summary>
/// Prepares a message for sending based on the rules of this channel binding element.
/// </summary>
/// <param name="message">The message to prepare for sending.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>
/// True if the <paramref name="message"/> applied to this binding element
/// and the operation was successful. False otherwise.
/// </returns>
public async Task<MessageProtections?> ProcessOutgoingMessageAsync(IProtocolMessage message, CancellationToken cancellationToken) {
var oauthMessage = message as ITamperResistantOAuthMessage;
if (oauthMessage != null) {
HttpDeliveryMethods transmissionMethod = oauthMessage.HttpMethods;
try {
oauthMessage.HttpMethod = MessagingUtilities.GetHttpVerb(transmissionMethod);
return MessageProtections.None;
} catch (ArgumentException ex) {
Logger.OAuth.Error("Unrecognized HttpDeliveryMethods value.", ex);
return null;
}
} else {
return null;
}
}
/// <summary>
/// Performs any transformation on an incoming message that may be necessary and/or
/// validates an incoming message based on the rules of this channel binding element.
/// </summary>
/// <param name="message">The incoming message to process.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>
/// True if the <paramref name="message"/> applied to this binding element
/// and the operation was successful. False if the operation did not apply to this message.
/// </returns>
/// <exception cref="ProtocolException">
/// Thrown when the binding element rules indicate that this message is invalid and should
/// NOT be processed.
/// </exception>
public async Task<MessageProtections?> ProcessIncomingMessageAsync(IProtocolMessage message, CancellationToken cancellationToken) {
return null;
}
#endregion
}
}
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