客户端中未发生 WCF 回调

Question

我尝试为我的测试自动化实施 WCF 双工服务。服务器调用正常，但没有回调客户端方法。我已经浏览过其他博客和 stacoverflow。将 Isoneway 属性设置为 true，将并发模式设置为可重入，并将同步上下文设置为 false。以前它工作正常。我不知道是什么导致了这个问题。 在这个服务契约中，增加了回调

[ServiceContract(CallbackContract=typeof(ICollaborationServiceCallBack),SessionMode=SessionMode.Required)]
    public interface ICollaborationInfrastructureService
    {

在测试中，初始化代理

[TestFixture]
[CallbackBehavior(UseSynchronizationContext = false, ConcurrencyMode = ConcurrencyMode.Reentrant,IncludeExceptionDetailInFaults=true)]
public class SAF_TestCollaboration : TestFixtureBase, ICollaborationInfrastructureServiceCallback
{
    private SfdTestSteps steps = null;
    private CollaborationInfrastructureServiceClient client = null;  
    private SfdTask task = null;
    protected override void TestFixtureSetupBegin()
    {
        base.TestFixtureSetupBegin();
        steps = new SfdTestSteps();
        task = new SfdTask();
        PrepareEnvironment();
        client = new CollaborationInfrastructureServiceClient(new InstanceContext(this));
    }

    public void Login(string username,string password)
    {
        TestMonitor.Do("xyz","xyz", "xyz",
            () =>
            {
                xyzzzzz.....
                OperationContext.Current.GetCallbackChannel<ICollaborationServiceCallBack>().DoLoginIn("xyz", "xyz");
            });
    }

方法在测试端实现...

    public void DoLoginIn(string username, string password)
    {
        steps.Login.UserName = username;
        steps.Login.Password = password;
        steps.Login.DoLogin();
    }

Answer 1

问题是OperationContext.Current 绑定到线程。如果你切换到不同的线程OperationContext.Current 将是空的。

试试这个：

   public void Login(string username,string password)
    {
        var callbackChannel = OperationContext.Current.GetCallbackChannel<ICollaborationServiceCallBack>();
        TestMonitor.Do("xyz","xyz", "xyz",
            () =>
            {
                xyzzzzz.....
                callbackChannel.DoLoginIn("xyz", "xyz");
            });
    }