/// <summary>
/// Sends the asynchronous request to the server.
/// </summary>
/// <param name="request">The request to be send.</param>
/// <param name="cancellationToken">The operation cancellation token.</param>
/// <returns>The Task representing the asynchronous operation.</returns>
protected override async Task <HttpResponseMessage> SendAsync(
HttpRequestMessage request,
CancellationToken cancellationToken)
{
try
{
// Validate that the object is no disposed
this.EnsureNotDisposed();
// Execute the request
var convertedRequest =
await WindowsHttpMessageHandler.ConvertRequest(request, cancellationToken).ConfigureAwait(false);
var response =
await this.client.SendRequestAsync(convertedRequest).AsTask(cancellationToken).ConfigureAwait(false);
var convertedResponse =
await WindowsHttpMessageHandler.ConvertResponse(response, cancellationToken).ConfigureAwait(false);
// Return the converted response
return(convertedResponse);
}
catch (Exception ex)
{
throw new WebException(ex.Message, ex, WebExceptionStatus.ConnectFailure, null);
}
}
/// <summary>
/// Converts the received response message.
/// </summary>
/// <param name="response">The request message to be transformed.</param>
/// <param name="cancellationToken">The operation cancellation token.</param>
/// <returns>The Task representing the asynchronous operation.</returns>
private static async Task <HttpResponseMessage> ConvertResponse(
Windows.Web.Http.HttpResponseMessage response,
CancellationToken cancellationToken)
{
// Convert the response
var converted = new HttpResponseMessage((HttpStatusCode)(int)response.StatusCode)
{
ReasonPhrase = response.ReasonPhrase,
RequestMessage = await WindowsHttpMessageHandler
.ConvertRequest(response.RequestMessage, cancellationToken)
.ConfigureAwait(false),
Content = await WindowsHttpMessageHandler.ConvertContent(response.Content, cancellationToken)
.ConfigureAwait(false),
Version = WindowsHttpMessageHandler.GetVersion(response.Version)
};
// Copy headers
foreach (var header in response.Headers)
{
converted.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
// Return the converted message
return(converted);
}
/// <summary>
/// Converts the request message that was send.
/// </summary>
/// <param name="request">The request message to be transformed.</param>
/// <param name="cancellationToken">The operation cancellation token.</param>
/// <returns>The Task representing the asynchronous operation.</returns>
private static async Task <HttpRequestMessage> ConvertRequest(
Windows.Web.Http.HttpRequestMessage request,
CancellationToken cancellationToken)
{
// Convert the request message
var converted = new HttpRequestMessage
{
Method = new HttpMethod(request.Method.Method),
RequestUri = request.RequestUri,
Content = await WindowsHttpMessageHandler.ConvertContent(request.Content, cancellationToken)
.ConfigureAwait(false)
};
// Copy request headers
foreach (var header in request.Headers)
{
converted.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
// Copy request properties
foreach (var prop in request.Properties)
{
converted.Properties.Add(prop);
}
// Return the transformed request
return(converted);
}
/// <summary>
/// Converts the request message to be send.
/// </summary>
/// <param name="request">The request message to be transformed.</param>
/// <param name="cancellationToken">The operation cancellation token.</param>
/// <returns>The Task representing the asynchronous operation.</returns>
private static async Task <Windows.Web.Http.HttpRequestMessage> ConvertRequest(
HttpRequestMessage request,
// ReSharper disable once UnusedParameter.Local
CancellationToken cancellationToken)
{
// Create the request message
var converted = new Windows.Web.Http.HttpRequestMessage
{
Method = new Windows.Web.Http.HttpMethod(request.Method.Method),
Content = await WindowsHttpMessageHandler.ConvertContent(request.Content).ConfigureAwait(false),
RequestUri = request.RequestUri
};
// Copy request headers
WindowsHttpMessageHandler.CopyHeaders(request.Headers, converted.Headers);
// Copy request properties
foreach (var property in request.Properties)
{
converted.Properties.Add(property);
}
// Return the transformed request
return(converted);
}
/// <summary>
/// Converts the convent from System.Net.Http.HttpContent to Windows.Web.Http.IHttpContent.
/// </summary>
/// <param name="content">The System.Net.Http.HttpContent to convert.</param>
/// <returns>Converted Windows.Web.Http.IHttpContent.</returns>
private static async Task <Windows.Web.Http.IHttpContent> ConvertContent(HttpContent content)
{
// If no content to convert
if (content == null)
{
return(null);
}
// Convert the content
var stream = await content.ReadAsStreamAsync().ConfigureAwait(false);
var converted = new Windows.Web.Http.HttpStreamContent(stream.AsInputStream());
// Copy content headers
WindowsHttpMessageHandler.CopyHeaders(content.Headers, converted.Headers);
// Return the converted content
return(converted);
}
