ServiceChannel通过tcp cannel传递大数组时出现Faulted状态异常

Question

这是我用来启动服务器的代码：

        ServiceHost svh = new ServiceHost(typeof(MyService));

        var tcpbinding = new NetTcpBinding();
        //remove limits on the max array size
        tcpbinding.MaxReceivedMessageSize = 2147483647;
        tcpbinding.ReaderQuotas.MaxArrayLength = 2147483647;
        tcpbinding.ReaderQuotas.MaxBytesPerRead = 2147483647;
        tcpbinding.ReaderQuotas.MaxStringContentLength = 2147483647;
        tcpbinding.ReaderQuotas.MaxDepth = 2147483647;

        svh.AddServiceEndpoint(typeof(IMyService), tcpbinding, location);

        // Check to see if the service host already has a ServiceMetadataBehavior
        ServiceMetadataBehavior smb = svh.Description.Behaviors.Find<ServiceMetadataBehavior>();
        // If not, add one
        if (smb == null)
            smb = new ServiceMetadataBehavior();
        //smb.HttpGetEnabled = true;
        smb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15;
        svh.Description.Behaviors.Add(smb);

        // Add MEX endpoint
        svh.AddServiceEndpoint(
          ServiceMetadataBehavior.MexContractName,
          MetadataExchangeBindings.CreateMexTcpBinding(),
          location+"/mex"
        );

        svh.Open();

这是修改后的客户端 app.config：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
    <bindings>
        <netTcpBinding>
            <binding name="NetTcpBinding_IMyService" closeTimeout="00:01:00"
                openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
                hostNameComparisonMode="StrongWildcard" listenBacklog="10"
                maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxConnections="10"
                maxReceivedMessageSize="2147483647">
                <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647"
                    maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
                <reliableSession ordered="true" inactivityTimeout="00:10:00"
                    enabled="false" />
                <security mode="Transport">
                    <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
                    <message clientCredentialType="Windows" />
                </security>
            </binding>
        </netTcpBinding>
    </bindings>
    <client>
        <endpoint address="net.tcp://localhost:8666/myservice" binding="netTcpBinding"
            bindingConfiguration="NetTcpBinding_IMyService"
            contract="VMyService.IMyService" name="NetTcpBinding_IMyService">
            <identity>
                <userPrincipalName value="badasscomputing\menkaur" />
            </identity>
        </endpoint>
    </client>
</system.serviceModel>
</configuration>

这是测试客户端代码：

var r=client.GetResult(26);

其中 GetResult 返回对象数组。当数组很小时，它可以正常工作，没有任何问题，但是当我尝试提取包含 3 126 309 个项目（字符串，在本例中代表网页 url）的字符串数组时，我收到以下异常：

System.ServiceModel.CommunicationObjectFaultedException was unhandled
Message=The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.
Source=mscorlib
StackTrace:
Server stack trace: 
   at System.ServiceModel.Channels.CommunicationObject.ThrowIfFaulted()
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at apiDemo.NS.IMyService.GetResult(UInt64 taskId)
   at apiDemo.NS.MyServiceClient.GetResult(UInt64 taskId) in D:\Users\menkaur\Documents\Visual Studio 2010\Projects\myProject\apiDemo\apiDemo\Service References\MyService\Reference.cs:line 1456
   at apiDemo.Program.Main(String[] args) in D:\Users\menkaur\Documents\Visual Studio 2010\Projects\myProject\apiDemo\apiDemo\Program.cs:line 190
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

InnerException：

看起来这来自于正在传输的大数组大小，但我删除了对我能找到的数组大小的任何限制。

有什么我错过的事情还是来自其他方向？

Answer 1

我认为您需要更改 MaxItemsInObjectGraph 。抛开事实不谈，正如 Henk Holterman 指出的那样，传递 300 万个字符串可能不是最好的想法。