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//-----------------------------------------------------------------------
// <copyright file="StandardWebRequestHandler.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOAuth.ChannelElements {
using System;
using System.IO;
using System.Net;
using DotNetOAuth.Messaging;
/// <summary>
/// The default handler for transmitting <see cref="HttpWebRequest"/> instances
/// and returning the responses.
/// </summary>
internal class StandardWebRequestHandler : IWebRequestHandler {
#region IWebRequestHandler Members
/// <summary>
/// Prepares a POST <see cref="HttpWebRequest"/> and returns the request stream
/// for writing out the POST entity data.
/// </summary>
/// <param name="request">The <see cref="HttpWebRequest"/> that should contain the entity.</param>
/// <returns>The stream the caller should write out the entity data to.</returns>
public TextWriter GetRequestStream(HttpWebRequest request) {
if (request == null) {
throw new ArgumentNullException("request");
}
try {
return new StreamWriter(request.GetRequestStream());
} catch (WebException ex) {
throw new ProtocolException(MessagingStrings.ErrorInRequestReplyMessage, ex);
}
}
/// <summary>
/// Processes an <see cref="HttpWebRequest"/> and converts the
/// <see cref="HttpWebResponse"/> to a <see cref="Response"/> instance.
/// </summary>
/// <param name="request">The <see cref="HttpWebRequest"/> to handle.</param>
/// <returns>An instance of <see cref="Response"/> describing the response.</returns>
public Response GetResponse(HttpWebRequest request) {
if (request == null) {
throw new ArgumentNullException("request");
}
try {
Logger.DebugFormat("HTTP {0} {1}", request.Method, request.RequestUri);
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) {
return new Response(response);
}
} catch (WebException ex) {
if (Logger.IsErrorEnabled) {
if (ex.Response != null) {
using (var reader = new StreamReader(ex.Response.GetResponseStream())) {
Logger.ErrorFormat("WebException from {0}: {1}", ex.Response.ResponseUri, reader.ReadToEnd());
}
} else {
Logger.ErrorFormat("WebException {1} from {0}, no response available.", request.RequestUri, ex.Status);
}
}
throw new ProtocolException(MessagingStrings.ErrorInRequestReplyMessage, ex);
}
}
#endregion
}
}
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