/// <summary>
/// Creates, configures, sends, and returns a <see cref="HttpContext"/>. This completes as soon as the response is started.
/// </summary>
/// <returns></returns>
public async Task <HttpContext> SendAsync(Action <HttpContext> configureContext, CancellationToken cancellationToken = default)
{
if (configureContext == null)
{
throw new ArgumentNullException(nameof(configureContext));
}
var builder = new HttpContextBuilder(_application);
builder.Configure(context =>
{
var request = context.Request;
request.Scheme = BaseAddress.Scheme;
request.Host = HostString.FromUriComponent(BaseAddress);
if (BaseAddress.IsDefaultPort)
{
request.Host = new HostString(request.Host.Host);
}
var pathBase = PathString.FromUriComponent(BaseAddress);
if (pathBase.HasValue && pathBase.Value.EndsWith("/"))
{
pathBase = new PathString(pathBase.Value.Substring(0, pathBase.Value.Length - 1));
}
request.PathBase = pathBase;
});
builder.Configure(configureContext);
return(await builder.SendAsync(cancellationToken).ConfigureAwait(false));
}
/// <summary>
/// This adapts HttpRequestMessages to ASP.NET Core requests, dispatches them through the pipeline, and returns the
/// associated HttpResponseMessage.
/// </summary>
/// <param name="request"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
protected override async Task <HttpResponseMessage> SendAsync(
HttpRequestMessage request,
CancellationToken cancellationToken)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
var contextBuilder = new HttpContextBuilder(_application);
Stream responseBody = null;
var requestContent = request.Content ?? new StreamContent(Stream.Null);
var body = await requestContent.ReadAsStreamAsync();
contextBuilder.Configure(context =>
{
var req = context.Request;
req.Protocol = "HTTP/" + request.Version.ToString(fieldCount: 2);
req.Method = request.Method.ToString();
req.Scheme = request.RequestUri.Scheme;
req.Host = HostString.FromUriComponent(request.RequestUri);
if (request.RequestUri.IsDefaultPort)
{
req.Host = new HostString(req.Host.Host);
}
req.Path = PathString.FromUriComponent(request.RequestUri);
req.PathBase = PathString.Empty;
if (req.Path.StartsWithSegments(_pathBase, out var remainder))
{
req.Path = remainder;
req.PathBase = _pathBase;
}
req.QueryString = QueryString.FromUriComponent(request.RequestUri);
foreach (var header in request.Headers)
{
req.Headers.Append(header.Key, header.Value.ToArray());
}
if (requestContent != null)
{
foreach (var header in requestContent.Headers)
{
req.Headers.Append(header.Key, header.Value.ToArray());
}
}
if (body.CanSeek)
{
// This body may have been consumed before, rewind it.
body.Seek(0, SeekOrigin.Begin);
}
req.Body = body;
responseBody = context.Response.Body;
});
var httpContext = await contextBuilder.SendAsync(cancellationToken);
var response = new HttpResponseMessage();
response.StatusCode = (HttpStatusCode)httpContext.Response.StatusCode;
response.ReasonPhrase = httpContext.Features.Get <IHttpResponseFeature>().ReasonPhrase;
response.RequestMessage = request;
response.Content = new StreamContent(responseBody);
foreach (var header in httpContext.Response.Headers)
{
if (!response.Headers.TryAddWithoutValidation(header.Key, (IEnumerable <string>)header.Value))
{
bool success = response.Content.Headers.TryAddWithoutValidation(header.Key, (IEnumerable <string>)header.Value);
Contract.Assert(success, "Bad header");
}
}
return(response);
}
