public static async Task RedirectToService()

in src/Microsoft.Azure.SignalR/Utilities/ServiceRouteHelper.cs [20:86]
59 lines of code
8 McCabe index (conditional complexity)

        public static async Task RedirectToService<THub>(HttpContext context, IList<IAuthorizeData> authorizationData) where THub : Hub
        {
            var handler = context.RequestServices.GetRequiredService<NegotiateHandler<THub>>();
            var loggerFactory = context.RequestServices.GetService<ILoggerFactory>();
            var logger = loggerFactory.CreateLogger<ServiceRouteHelper>();

            if (authorizationData != null && !await AuthorizeHelper.AuthorizeAsync(context, authorizationData))
            {
                return;
            }

            NegotiationResponse negotiateResponse = null;
            try
            {
                negotiateResponse = await handler.Process(context);

                if (context.Response.HasStarted)
                {
                    // Inner handler already write to context.Response, no need to continue with error case
                    return;
                }

                // Consider it as internal server error when we don't successfully get negotiate response
                if (negotiateResponse == null)
                {
                    var message = "Unable to get the negotiate endpoint";
                    Log.NegotiateFailed(logger, message);
                    context.Response.StatusCode = 500;
                    await context.Response.WriteAsync(message);
                    return;
                }
            }
            catch (AzureSignalRAccessTokenTooLongException ex)
            {
                Log.NegotiateFailed(logger, ex.Message);
                context.Response.StatusCode = 413;
                await context.Response.WriteAsync(ex.Message);
                return;
            }
            catch (AzureSignalRAccessTokenNotAuthorizedException ex)
            {
                Log.NegotiateFailed(logger, ex.Message);
                context.Response.StatusCode = 500;
                return;
            }
            catch (AzureSignalRNotConnectedException e)
            {
                Log.NegotiateFailed(logger, e.Message);
                context.Response.StatusCode = 500;
                await context.Response.WriteAsync(e.Message);
                return;
            }

            var writer = new MemoryBufferWriter();
            try
            {
                context.Response.ContentType = "application/json";
                NegotiateProtocol.WriteResponse(negotiateResponse, writer);
                // Write it out to the response with the right content length
                context.Response.ContentLength = writer.Length;
                await writer.CopyToAsync(context.Response.Body);
            }
            finally
            {
                writer.Reset();
            }
        }