public override async Task HandleRequestAsync(IHttpContext context)
{
if (context.IsHandled)
{
return;
}
if (!context.Request.IsWebSocketRequest)
{
return;
}
var absolutePath = context.Request.Url.AbsolutePath;
var socket = webSockets.FirstOrDefault(f => f.Route == absolutePath);
if (socket == null)
{
context.Response.StatusCode = (int)HttpStatusCode.NotFound;
context.Close();
return;
}
if (!socket.IsInstanceGenerated)
{
throw new NullReferenceException($"{socket.SocketType.Name} is null reference");
}
if (socket.Instance != null)
{
var httpListenerWebSocketContext = await context.AcceptWebSocketRequest();
socket.Instance.Invoke(WebSocketConstants.OnBeforeConnectedMethod, BindingFlags.Instance | BindingFlags.NonPublic, new[] { httpListenerWebSocketContext });
}
}
public async Task DispatchRequestAsync(IHttpContext httpContext)
{
// Determine the request log-string
var request = httpContext.Request;
var response = httpContext.Response;
var logRequest = $"{request.HttpMethod}:{request.Url}:{request.RemoteEndPoint?.Address}";
// Log the request
s_log.Log(LogLevel.Info, () => $"{logRequest} - Start processing");
try
{
// Set the Server header of the response
response.SetHeaderValue("Server", s_serverName);
// Start the stopwatch
var sw = Stopwatch.StartNew();
IRequestHandler requestHandler;
try
{
// Obtain the request handler for this message
requestHandler = _requestHandlerFactory.GetRequestHandler(httpContext);
// Make sure we got a request handler
if (requestHandler == null)
{
// Log warning
s_log.Log(LogLevel.Warning, () => $"{logRequest} - Not implemented.");
// This request is not implemented
httpContext.Response.SendResponse(DavStatusCode.NotImplemented);
return;
}
}
catch (Exception exc)
{
// Log error
s_log.Log(LogLevel.Error, () => $"Unexpected exception while trying to obtain the request handler (method={request.HttpMethod}, url={request.Url}, source={request.RemoteEndPoint}", exc);
// Abort
return;
}
try
{
// Handle the request
if (await requestHandler.HandleRequestAsync(httpContext, _store).ConfigureAwait(false))
{
// Log processing duration
s_log.Log(LogLevel.Info, () => $"{logRequest} - Finished processing ({sw.ElapsedMilliseconds}ms, HTTP result: {httpContext.Response.Status})");
}
else
{
// Log warning
s_log.Log(LogLevel.Warning, () => $"{logRequest} - Not processed.");
// Set status code to bad request
httpContext.Response.SendResponse(DavStatusCode.NotImplemented);
}
}
catch (Exception exc)
{
// Log what's going wrong
s_log.Log(LogLevel.Error, () => $"Unexpected exception while handling request (method={request.HttpMethod}, url={request.Url}, source={request.RemoteEndPoint}", exc);
try
{
// Attempt to return 'InternalServerError' (if still possible)
httpContext.Response.SendResponse(DavStatusCode.InternalServerError);
}
catch
{
// We might not be able to send the response, because a response
// was already initiated by the the request handler.
}
}
finally
{
// Check if we need to dispose the request handler
(requestHandler as IDisposable)?.Dispose();
}
}
finally
{
// Always close the context
httpContext.Close();
}
}