WCF - 尝试接收大型数据列表时出错(~5000个对象)

Question

我试图传输大约7000-8000个不大的对象(每个对象实例只有9个属性).有没有人知道为什么当我开始检索超过5000个对象时,我会收到连接错误？它完美运行,直到我达到数据大小的某个阈值.

我通过WCF的TCP服务绑定公开了这些对象的检索.我有以下示例配置:

<bindings>
  <netTcpBinding>
    <binding name="NetTcpBindingConfig"
             openTimeout="00:01:00"
             sendTimeout="00:05:00"
             closeTimeout="00:01:00"
             maxBufferPoolSize="2147483647"
             maxBufferSize="2147483647"
             maxReceivedMessageSize="2147483647">
      <readerQuotas maxDepth="2147483647"
                    maxStringContentLength="2147483647"
                    maxArrayLength="2147483647"
                    maxBytesPerRead="2147483647"
                    maxNameTableCharCount="2147483647" />
      <security>
        <transport/>
      </security>
    </binding>
  </netTcpBinding>
</bindings>

<services>
  <service behaviorConfiguration="ServiceBehavior"
           name="TestService">
    <endpoint address="" 
              binding="netTcpBinding" 
              bindingConfiguration="NetTcpBindingConfig"
              contract="ServiceInterfaces.ITestService">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
    <endpoint address="mex" 
              binding="mexTcpBinding" 
              contract="IMetadataExchange" />
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://localhost:8526/TestService" />
      </baseAddresses>
    </host>
  </service>
</services>

<behaviors>
  <serviceBehaviors>
    <behavior name="Services.ServiceBehavior">
      <serviceMetadata httpGetEnabled="false" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>

从我的.NET代码中,我使用ChannelFactory调用该服务,其中包含以下示例代码:

using (ChannelFactory<ITestervice> channel = new ChannelFactory<ITestService>(BindingConfig, "net.tcp://localhost:8526/TestService"))
{
    ITestService testService = channel.CreateChannel();
    toReturn = testService.LoadAll();
    channel.Close();
}

BindingConfig对象是我的代码中的NetTcpBinding属性,填充为'new NetTcpBinding("NetTcpBindingConfig")'.我的客户端绑定与我的WCF TCP服务绑定完全相同.

任何人都可以提供任何有关如何检索所有数据的信息(我的当前设置似乎我的最大限制是~5000个对象)？任何帮助深表感谢.谢谢.

编辑:如果有人遇到此问题,请参阅有关MaxItemsInObjectGraph的已接受解决方案.但是,如果您使用来自客户端的ChannelFactory来使用您的服务,请参阅以下代码以使其工作:

foreach (OperationDescription operation in channel.Endpoint.Contract.Operations)
{
    DataContractSerializerOperationBehavior dataContractBehavior = operation.Behaviors[typeof(DataContractSerializerOperationBehavior)] as DataContractSerializerOperationBehavior;

    if (dataContractBehavior != null)
        dataContractBehavior.MaxItemsInObjectGraph = int.MaxValue;
}

Answer 1

考虑增加MaxItemsInObjectGraph配额(其默认值为64k).它应该在服务器端和客户端.请参阅示例配置: