Question

我有以下代码用于返回我的WCF服务实例ServiceClient：

    var readerQuotas = new XmlDictionaryReaderQuotas()
    {
        MaxDepth = 6000000,
        MaxStringContentLength = 6000000,
        MaxArrayLength = 6000000,
        MaxBytesPerRead = 6000000,
        MaxNameTableCharCount = 6000000
    };


    var throttlingBehaviour = new ServiceThrottlingBehavior(){MaxConcurrentCalls=500,MaxConcurrentInstances=500,MaxConcurrentSessions = 500}; 
    binding = new WSHttpBinding(SecurityMode.None) {MaxReceivedMessageSize = 6000000, ReaderQuotas = readerQuotas};

    dualBinding = new WSDualHttpBinding(WSDualHttpSecurityMode.None)
                      {MaxReceivedMessageSize = 6000000, ReaderQuotas = readerQuotas};

    endpointAddress = new EndpointAddress("http://localhost:28666/DBInteractionGateway.svc"); 

    return new MusicRepo_DBAccess_ServiceClient(new InstanceContext(instanceContext), dualBinding, endpointAddress);

最近我遇到了一些超时问题，所以我决定添加限制行为，如下：

    var throttlingBehaviour = new ServiceThrottlingBehavior () {
        MaxConcurrentCalls=500, 
        MaxConcurrentInstances=500,
        MaxConcurrentSessions = 500
    };

我的问题是，我应该在上面的代码中将throttlingBehaviour添加到MusicRepo_DBAccess_ServiceClient个实例中吗？

我在网上发现的一些例子中，他们正在做这样的事情：

ServiceHost host = new ServiceHost(typeof(MyService));
ServiceThrottlingBehavior throttleBehavior = new ServiceThrottlingBehavior
{
    MaxConcurrentCalls = 40,
    MaxConcurrentInstances = 20,
    MaxConcurrentSessions = 20,
};
host.Description.Behaviors.Add(throttleBehavior);
host.Open();

请注意，在上面的代码中，他们使用ServiceHost而我不是，然后他们打开它（使用Open()），而我打开MusicRepo_DBAccess_ServiceClient实例...这让我感到困惑。

Answer 1

可以在代码中完成，就像我一样，在运行时配置。

vb版本：

    Dim stb As New ServiceThrottlingBehavior
    stb.MaxConcurrentSessions = 100
    stb.MaxConcurrentCalls = 100
    stb.MaxConcurrentInstances = 100
    ServiceHost.Description.Behaviors.Add(stb)

c＃version：

    ServiceThrottlingBehavior stb = new ServiceThrottlingBehavior {
        MaxConcurrentSessions = 100,
        MaxConcurrentCalls = 100,
        MaxConcurrentInstances = 100
    };
    ServiceHost.Description.Behaviors.Add(stb);

Answer 2

限制是服务端（服务器）行为而不是客户端

嫩

Answer 3

您可以使用行为在afaik配置文件中指定行为，并且生成的客户端将遵守。

为简洁起见，排除了一些配置部分

<service 
    behaviorConfiguration="throttleThis" />

        <serviceBehaviors>
            <behavior name="throttleThis">
                <serviceMetadata httpGetEnabled="True" />
                <serviceThrottling
                    maxConcurrentCalls="40"
                    maxConcurrentInstances="20"
                    maxConcurrentSessions="20"/>
            </behavior>
        </serviceBehaviors>

WCF：如何将ServiceThrottling行为添加到WCF服务？

3 个答案: