internal HttpContextBuilder(ApplicationWrapper application, bool allowSynchronousIO, bool preserveExecutionContext)
{
_application = application ?? throw new ArgumentNullException(nameof(application));
AllowSynchronousIO = allowSynchronousIO;
_preserveExecutionContext = preserveExecutionContext;
_httpContext = new DefaultHttpContext();
_responseFeature = new ResponseFeature(Abort);
_requestLifetimeFeature = new RequestLifetimeFeature(Abort);
var request = _httpContext.Request;
request.Protocol = HttpProtocol.Http11;
request.Method = HttpMethods.Get;
_requestPipe = new Pipe();
var responsePipe = new Pipe();
_responseReaderStream = new ResponseBodyReaderStream(responsePipe, ClientInitiatedAbort, () => _responseReadCompleteCallback?.Invoke(_httpContext));
_responsePipeWriter = new ResponseBodyPipeWriter(responsePipe, ReturnResponseMessageAsync);
_responseFeature.Body = new ResponseBodyWriterStream(_responsePipeWriter, () => AllowSynchronousIO);
_responseFeature.BodyWriter = _responsePipeWriter;
_httpContext.Features.Set <IHttpBodyControlFeature>(this);
_httpContext.Features.Set <IHttpResponseFeature>(_responseFeature);
_httpContext.Features.Set <IHttpResponseBodyFeature>(_responseFeature);
_httpContext.Features.Set <IHttpRequestLifetimeFeature>(_requestLifetimeFeature);
_httpContext.Features.Set <IHttpResponseTrailersFeature>(_responseTrailersFeature);
}