/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="router"></param>
/// <param name="transportElement"></param>
/// <param name="context"></param>
public AspNetCoreReplyChannelListener(
AspNetCoreRequestRouter router,
AspNetCoreTransportBindingElement transportElement,
BindingContext context) :
base(context.Binding)
{
this.router = router ?? throw new ArgumentNullException(nameof(router));
this.bufferManager = BufferManager.CreateBufferManager(transportElement.MaxBufferPoolSize, (int)transportElement.MaxReceivedMessageSize);
this.encoderFactory = context.BindingParameters.Remove <MessageEncodingBindingElement>().CreateMessageEncoderFactory();
this.uri = AspNetCoreUri.GetUri(context.ListenUriBaseAddress.AbsolutePath + context.ListenUriRelativeAddress);
this.sync = new SemaphoreSlim(5);
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="next"></param>
/// <param name="services"></param>
/// <param name="binding"></param>
AspNetCoreServiceHostMiddleware(
RequestDelegate next,
IServiceProvider services,
AspNetCoreBinding binding)
{
this.next = next;
this.services = services ?? throw new ArgumentNullException(nameof(services));
this.binding = binding ?? throw new ArgumentNullException(nameof(binding));
this.router = new AspNetCoreRequestRouter();
this.baseUri = AspNetCoreUri.GetUri("/" + Guid.NewGuid().ToString("N") + "/");
// register for cleanup when application is stopped
services.GetRequiredService <IApplicationLifetime>().ApplicationStopping.Register(() => host.Close());
}
/// <summary>
/// Routes the request to the appropriate queue and initiates a blockig send for completion.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task RunAsync(HttpContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
// acquire registered queue
var queue = Get(AspNetCoreUri.GetUri(context));
if (queue == null)
{
throw new AspNetCoreServiceModelException($"Unable to route request '{context.Request.Path}'. No registered listener.");
}
// route to queue and wait for request to be handled
await queue.SendAsync(context);
}
/// <summary>
/// Process addressing information from HTTP.
/// </summary>
/// <param name="context"></param>
/// <param name="message"></param>
void ReadMessageAddressing(HttpRequest request, Message message)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
// apply properties
ReadProperties(request, message);
// decide on the default port based on the schema
int DefaultPort()
{
switch (request.Scheme)
{
case "http":
return(80);
case "https":
return(443);
default:
return(80);
}
}
// encode raw request URL into Via
message.Properties.Via = new UriBuilder(
request.Scheme,
request.Host.Host,
request.Host.Port ?? DefaultPort(),
request.PathBase + request.Path,
request.QueryString.Value)
.Uri;
// check addressing version none requirements
if (message.Version.Addressing == AddressingVersion.None)
{
try
{
if (message.Headers.Action != null)
{
throw new ProtocolException("Action present when not expected.");
}
if (message.Headers.To != null)
{
throw new ProtocolException("To present when not expected.");
}
}
catch (XmlException)
{
// handled
}
catch (CommunicationException)
{
// handled
}
// override message to with ASP.Net core URI
message.Headers.To = AspNetCoreUri.GetUri(request.HttpContext);
}
// derive SOAP action
var action = ReadSoapAction(request, message);
if (action != null)
{
action = WebUtility.UrlDecode(action);
if (action.Length >= 2 && action[0] == '"' && action[action.Length - 1] == '"')
{
action = action.Substring(1, action.Length - 2);
}
if (message.Version.Addressing == AddressingVersion.None)
{
message.Headers.Action = action;
}
// check that action isn't mismatched
if (action.Length > 0 && string.Compare(message.Headers.Action, action, StringComparison.Ordinal) != 0)
{
throw new ProtocolException($"Mismatched action: '{message.Headers.Action}' != '{action}'");
}
}
}
