Question

我需要设置一个Stateful Service Fabric应用程序来侦听TCP请求，然后将消息弹出到Reliable Queue。

有很多关于HTTP和WCF端点的例子，但我找不到简单的TCP。

在我的ServiceManifest.xml我有这个

 <Endpoints>
  <!-- This endpoint is used by the communication listener to obtain the port on which to 
       listen. Please note that if your service is partitioned, this port is shared with 
       replicas of different partitions that are placed in your code. -->
  <Endpoint Name="ServiceEndpoint" />

  <!-- This endpoint is used by the replicator for replicating the state of your service.
       This endpoint is configured through a ReplicatorSettings config section in the Settings.xml
       file under the ConfigPackage. -->
  <Endpoint Name="ReplicatorEndpoint" />
  <Endpoint Name="tcpEndpoint" Protocol="tcp" Port="10100"/>
</Endpoints>

我有一个实现名为ICommunicationListener

的TcpCommunicationListener的监听器

 public class TcpCommunicationListener : ICommunicationListener
{
    private readonly ServiceEventSource eventSource;
    private readonly ServiceContext serviceContext;
    private readonly string endpointName;
    private string listeningAddress;
    private string hostAddress;


    public TcpCommunicationListener(ServiceContext serviceContext, ServiceEventSource eventSource, string endpointName)
    {

        if (serviceContext == null)
        {
            throw new ArgumentNullException(nameof(serviceContext));
        }

        if (endpointName == null)
        {
            throw new ArgumentNullException(nameof(endpointName));
        }

        if (eventSource == null)
        {
            throw new ArgumentNullException(nameof(eventSource));
        }

        this.serviceContext = serviceContext;
        this.endpointName = endpointName;
        this.eventSource = eventSource;
    }

    public Task<string> OpenAsync(CancellationToken cancellationToken)
    {
        var serviceEndpoint = this.serviceContext.CodePackageActivationContext.GetEndpoint(this.endpointName);
        var protocol = serviceEndpoint.Protocol;
        int port = serviceEndpoint.Port;


        //StatefulServiceContext statefulServiceContext = this.serviceContext as StatefulServiceContext;

        this.hostAddress = FabricRuntime.GetNodeContext().IPAddressOrFQDN;

        this.listeningAddress = string.Format(
            CultureInfo.InvariantCulture,
            "{0}://{1}:{2}",
            protocol,
            hostAddress,
            port
           );

        try
        {
            this.eventSource.Message("Starting tcp listener " + this.listeningAddress);

            return Task.FromResult(this.hostAddress);
        }
        catch (Exception ex)
        {
            this.eventSource.Message("Tcp Listener failed to open endpoint {0}. {1}", this.endpointName, ex.ToString());

            throw;
        }
    }

    public Task CloseAsync(CancellationToken cancellationToken)
    {
        throw new NotImplementedException();
    }

    public void Abort()
    {
        throw new NotImplementedException();
    }
}

我还有StatefulService名为ListenerService

internal sealed class ListenerService : StatefulService
{

    public ListenerService(StatefulServiceContext context)
        : base(context)
    {

    }


    protected override IEnumerable<ServiceReplicaListener> CreateServiceReplicaListeners()
    {
        var endpoints = Context.CodePackageActivationContext.GetEndpoints()
                              .Where(endpoint => endpoint.Protocol == EndpointProtocol.Tcp)
                              .Select(endpoint => endpoint.Name);

        return endpoints.Select(endpoint => new ServiceReplicaListener(
            serviceContext => new TcpCommunicationListener(serviceContext, ServiceEventSource.Current, endpoint), endpoint));
    }


    protected override async Task RunAsync(CancellationToken cancellationToken)
    {
        cancellationToken.ThrowIfCancellationRequested();

       //do i spin up a TcpListener here?
    }
}

所以我的问题是如何获取正在收到的消息？

我是否必须在TcpListener的{{1}}方法中创建RunAsync？如果是这种情况，那么在ListenerService？

中指定一个端点是什么意思

OR

我是否需要在ServiceManifest.xml

的OpenAsync方法中执行某些操作

Answer 1

现在，您的通信侦听器代码仅在调用OpenAsync时发布Uri。您还需要实际开始侦听该端点。例如，您可以在那时打开Socket。您还可以将WCF与NetTcpBinding一起使用。

在Azure Service Fabric上设置TCP

1 个答案: