protected override Task <HttpResponseMessage> SendAsync(
HttpRequestMessage request,
CancellationToken cancellationToken)
{
OwinRequest owinRequest = OwinRequest.Create();
owinRequest.Scheme = request.RequestUri.Scheme;
owinRequest.Method = request.Method.ToString();
owinRequest.Path = request.RequestUri.AbsolutePath;
owinRequest.QueryString = request.RequestUri.Query.TrimStart('?');
owinRequest.CallCancelled = cancellationToken;
foreach (var header in request.Headers)
{
owinRequest.AddHeaderUnmodified(header.Key, header.Value);
}
HttpContent requestContent = request.Content;
if (requestContent != null)
{
foreach (var header in request.Content.Headers)
{
owinRequest.AddHeaderUnmodified(header.Key, header.Value);
}
}
else
{
requestContent = new StreamContent(Stream.Null);
}
return(requestContent.ReadAsStreamAsync()
.Then(requestBody =>
{
owinRequest.Body = requestBody;
var responseMemoryStream = new MemoryStream();
var owinResponse = new OwinResponse(owinRequest)
{
Body = responseMemoryStream
};
return _invoke.Invoke(owinRequest.Dictionary)
.Then(() =>
{
var response = new HttpResponseMessage();
response.StatusCode = (HttpStatusCode)owinResponse.StatusCode;
response.ReasonPhrase = owinResponse.ReasonPhrase;
response.RequestMessage = request;
// response.Version = owinResponse.Protocol;
responseMemoryStream.Seek(0, SeekOrigin.Begin);
response.Content = new StreamContent(responseMemoryStream);
foreach (var header in owinResponse.Headers)
{
if (!response.Headers.TryAddWithoutValidation(header.Key, header.Value))
{
response.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
}
return response;
});
}));
}