Question

我有一种情况，我希望在另一个电话进入时进行WCF呼叫。

Site1 request--> Site2
Site2 request --> Site3
Site2 <-- Site3 response
Site1 <-- Site2 response

我遇到的问题是Site2在Site1发送到Site2时尝试向Site3发送消息; Site2表示无法找到Site3。

实际的错误消息是：

Could not find endpoint element with name 'Endpoint_IEchoService' and contract 
'FakeCompany.API.Services.Contract.IEchoService' in the ServiceModel client 
configuration section. This might be because no configuration file was found 
for your application, or because no endpoint element matching this name could be 
found in the client element.

每个站点都是相同的配置和代码库。客户端，代理和服务器都在同一个项目中。应用程序是克隆人互相呼叫。它是一个具有多个地址绑定的网站。网站之间的其他常规通话工作正常，直到我在通话中尝试通话。

正如您可以从联系人姓名中猜到的那样，我的回声服务中发生的复杂方式并不多。站点之间的单个回声调用工作。我的问题是当我在服务端对另一个站点进行级联调用时。

我想知道是否允许这样做或者是否需要更改配置设置。

一些代码和配置。

端点地址在运行时更改。
如果你看到“时髦”的东西，那是因为客户端，代理和服务继承自通用基类。

// - ServiceModel客户端

<endpoint address="http://FakeCompany.unittest/Services/EchoService.svc"
 binding="basicHttpBinding" bindingConfiguration="SecureBinding"
 contract="FakeCompany.API.Services.Contract.IEchoService" name="Endpoint_IEchoService">
    <identity>
        <servicePrincipalName value="host/mikev-ws" />
    </identity>
</endpoint>

// - 绑定

<bindings>
    <basicHttpBinding>
        <binding name="SecureBinding" 
                 maxReceivedMessageSize="10000000" 
                 sendTimeout="00:05:00">
            <security mode="TransportCredentialOnly">
                <transport clientCredentialType="Basic" />
            </security>
        </binding>
    </basicHttpBinding>
</bindings>

// - 行为

<behaviors>
    <serviceBehaviors>
        <behavior name="MyServiceTypeBehaviors">
            <serviceMetadata httpGetEnabled="true" />
            <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
    </serviceBehaviors>
</behaviors>

// - 服务

<service name="FakeCompany.API.Services.Service.EchoService" behaviorConfiguration="MyServiceTypeBehaviors">
    <endpoint address="" binding="basicHttpBinding" contract="FakeCompany.API.Services.Contract.IEchoService" bindingConfiguration="SecureBinding" />
</service>

// - TEST

[Test]
public void CascadeMessage()
{
    //-- TEST: That a wcf call can occur within another wcf call.

    //-- ARRANGE
    DTO_Echo_Cascade_Request request = new DTO_Echo_Cascade_Request(unit1, unit2);
    request.NextCall = string.Format("{0};{1};{2};", unit3, unit4, unit5);


    //-- ACT
    var response = EchoAgent.Cascade(request);

    //-- ASSERT
    Assert.AreEqual("TBA", response.Response);
}

// - 代理

internal static DTO_Echo_Response Cascade(DTO_Echo_Cascade_Request request)
{
    DTO_Echo_Response response;
    using (EchoServiceClient serviceClient = new EchoServiceClient(request))
    {
        response = serviceClient.Cascade(request);
    }

    return response;
}

// - 客户

public DTO_Echo_Response Cascade(DTO_Echo_Cascade_Request request)
{
    return Process(() => Proxy.Cascade(request));
}

合同，DTO，PROXY被省略。

// - 服务

public DTO_Echo_Response Cascade(DTO_Echo_Cascade_Request request)
{
    DTO_Echo_Response response = new DTO_Echo_Response();

    response.Response += string.Format("Hello from {0};", request.TargetAddress);

    if (request.NextCall.NotNullOrEmpty())
    {
        var split = request.NextCall.Split(new [] {';'}, StringSplitOptions.RemoveEmptyEntries);

        if (split.GetUpperBound(0) > 0)
        {
            DTO_Echo_Cascade_Request nextRequest = new DTO_Echo_Cascade_Request(request.TargetAddress, split[0]);
            for (int i = 1; i < split.GetUpperBound(0); i++)
            {
                nextRequest.NextCall += split[i] + ";";
            }
            response.Response += EchoAgent.Cascade(nextRequest).Response;
        }

    }

    return response;
}

以下行发生异常

response.Response += EchoAgent.Cascade(nextRequest).Response;

通过另一个WCF调用调用WCF

一些代码和配置。

0 个答案: