在Azure Service Bus上到达MaxConcurrentCalls后，MassTransit停止使用队列中的消息

Question

我试图在Azure WorkerRole上运行Autofac和Azure Service Bus时使用Masstransit，一切正常，直到达到MaxConcurrentCalls，而不是消耗掉所有已发布的事件。

这是我的EntryPoint

ndf = ndf.sort_index(level=1,ascending=False)

和SAGA

public class WorkerRole : RoleEntryPoint
{
    private readonly CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
    private readonly ManualResetEvent runCompleteEvent = new ManualResetEvent(false);
    private IBusControl _bus;
    private IContainer _container;

    public override void Run()
    {
        Trace.TraceInformation("POC is running");

        try
        {
            this.RunAsync(this.cancellationTokenSource.Token).Wait();
        }
        finally
        {
            this.runCompleteEvent.Set();
        }
    }

    public override bool OnStart()
    {
        // Set the maximum number of concurrent connections 
        ServicePointManager.DefaultConnectionLimit = 12;

        string connectionString = CloudConfigurationManager.GetSetting("AzureServiceBusConnectionString");
        string queue = CloudConfigurationManager.GetSetting("AzureServiceBusQueue");

        bool result = base.OnStart();

        if (result)
        {
            XmlConfigurator.Configure();

            var builder = new ContainerBuilder();

            builder.RegisterConsumers(Assembly.GetExecutingAssembly());

            builder.RegisterType<InMemorySagaRepository<PocSaga>>().As<ISagaRepository<PocSaga>>().SingleInstance();
            builder.RegisterStateMachineSagas(Assembly.GetExecutingAssembly());

            builder.Register(c => Bus.Factory.CreateUsingAzureServiceBus(sbc =>
            {
                var serviceUri = ServiceBusEnvironment.CreateServiceUri("sb", CloudConfigurationManager.GetSetting("AzureSbNamespace"), CloudConfigurationManager.GetSetting("AzureSbPath"));
                sbc.UseLog4Net();

                var host = sbc.Host(serviceUri, h =>
                {
                    h.TokenProvider = TokenProvider.CreateSharedAccessSignatureTokenProvider(CloudConfigurationManager.GetSetting("AzureSbKeyName"), CloudConfigurationManager.GetSetting("AzureSbSharedAccessKey"), TimeSpan.FromDays(1), TokenScope.Namespace);
                });

                sbc.ReceiveEndpoint(host, CloudConfigurationManager.GetSetting("ServiceQueueName"), e =>
                {
                    e.LoadFrom(c);
                    e.RequiresSession = true;
                    e.LoadStateMachineSagas(c);
                    e.MaxConcurrentCalls = 8;
                    e.EnableDeadLetteringOnMessageExpiration = false;
                });
            }))
            .SingleInstance()
            .As<IBusControl>()
            .As<IBus>();

            _container = builder.Build();

            Trace.TraceInformation("POC has been started");

            var bc = _container.Resolve<IBusControl>();
            bc.Start();

            Trace.TraceInformation("Masstransit has been started");
        }

        return result;
    }

    public override void OnStop()
    {
        Trace.TraceInformation("POC is stopping");

        this.cancellationTokenSource.Cancel();
        this.runCompleteEvent.WaitOne();

        var bc = _container.Resolve<IBusControl>();
        bc.Stop();

        base.OnStop();

        Trace.TraceInformation("POC has stopped");
    }

    private async Task RunAsync(CancellationToken cancellationToken)
    {
        while (!cancellationToken.IsCancellationRequested)
        {
            var bc = _container.Resolve<IBusControl>();
            var id = Guid.NewGuid();
            Trace.TraceInformation("Working - Publishing a new IStartPocMessage - {0}",id);
            await bc.Publish<StartPocSagaMessage>(new { CorrelationId = id });
            await Task.Delay(5000);
            await bc.Publish<LoopMessage>(new { CorrelationId = id });
            await Task.Delay(5000);
            await bc.Publish<LoopMessage>(new { CorrelationId = id });
            await Task.Delay(30000);
        }
    }
}

启动了8个传奇之后，它停止使用新消息。我根本不知道为什么会这样。

有没有人对这个问题有所了解？

提前致谢。