Question

我已经创建了一个Web服务。在一段时间后，我最终得到以下错误：“打开操作未在分配的00:01:00超时内完成。分配给此操作的时间可能是一部分更长的超时时间。“

我不确定为什么我收到此错误，因为我已将开启超时设置为大约2小时。我是WCF Web服务和Web服务的新手。我在下面显示的配置是否有红色标志？

.NET版本：4.0

客户端配置：

<system.serviceModel>
<bindings>
  <netTcpBinding>
    <binding name="SecurityServiceDev" receiveTimeout="02:00:00" openTimeout="02:00:00" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" maxConnections="1000" maxBufferSize="2147483647">
      <security mode="Transport">
        <transport clientCredentialType="Windows" />
      </security>
    </binding>
  </netTcpBinding>
</bindings>
<diagnostics>
  <messageLogging logEntireMessage="true" maxMessagesToLog="300" logMessagesAtServiceLevel="true" logMalformedMessages="true" logMessagesAtTransportLevel="true" />
</diagnostics>
<client>
  <endpoint address="net.tcp://XXX.svc" binding="netTcpBinding" bindingConfiguration="SecurityServiceDev" contract="SecurityProxy.ISecurityService" name="SecurityService" />
</client>

网络服务配置：

<system.serviceModel>
<services>
  <service name="TMS.DAL.Common.Security.BAL.SecurityService" behaviorConfiguration="DataServiceBehavior">
    <endpoint address="net.tcp://XXX.svc"
                 name="SecurityService"
                 binding="netTcpBinding"
                 bindingConfiguration="Binding"
                 contract="TMS.DAL.Common.Security.BAL.ISecurityService"/>
    <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" />
  </service>
</services>
<bindings>
  <netTcpBinding>
    <binding name="Binding"
                receiveTimeout="02:00:00"
                openTimeout="02:00:00"
                maxBufferPoolSize="2147483647"
                maxReceivedMessageSize="2147483647"
                maxConnections="1000"
                maxBufferSize="2147483647">
      <security mode="Transport">
        <transport clientCredentialType="Windows"/>
      </security>
    </binding>
  </netTcpBinding>
</bindings>
<client/>
<behaviors>
  <serviceBehaviors>
    <behavior name="DataServiceBehavior" >
      <serviceDebug includeExceptionDetailInFaults="true"/>
      <serviceMetadata httpGetEnabled="true" />
      <dataContractSerializer maxItemsInObjectGraph="61200000" />
      <serviceThrottling maxConcurrentCalls="1000"
      maxConcurrentInstances="2147483647" maxConcurrentSessions="1000"/>
    </behavior>
  </serviceBehaviors>
</behaviors>

代码中唯一的配置如下：

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Multiple)]
public class SecurityService : ISecurityService

服务合同：

[ServiceContract]
public interface ISecurityService
{
    [OperationContract]
    bool IsUserInRole(String userName, String roleName);

    [OperationContract]
    bool DoesUserHavePermission(String userName, String permissionName);

    [OperationContract]
    List<String> GetUsersInRole(String roleName);

    [OperationContract]
    List<String> GetRolesForUser(String userName);

    [OperationContract]
    List<String> GetPermissionsForUser(String userName);

    [OperationContract]
    List<String> GetPermissionsForRole(String roleName);

    [OperationContract]
    List<String> GetRolesForApplication(String appName);

    [OperationContract(Name = "GetListValuesForRoleAndList")] 
    List<String> GetListValues(String roleName, String listNames);

    [OperationContract(Name = "GetListValuesForRolesAndList")] 
    List<String> GetListValues(List<String> roleNames, List<String> listNames);

    [OperationContract(Name = "GetListValuesForAppUserList")] 
    List<String> GetListValues(String appName, String userName, List<String> listNames);

    [OperationContract]
    List<String> GetListsForUser(String userName);

    [OperationContract]
    bool RoleExists(String roleName);

    [OperationContract]
    bool ExternalUserExists(String userName, String password);

Answer 1

每个页面都会为请求重新创建然后被丢弃 - NetTcpBinding本质上是会话的，这意味着它会保留资源，直到客户端说他们不再需要它们或者客户端消失，在您的情况下，您需要2小时将receiveTimeout设置为2小时。

因为你没有调用Close WCF认为会话仍处于活动状态，因此会限制来自新页面的请求，直到旧会话开始超时。 .NET 4默认会话限制相当高（100 x内核数）并且您已将其自己设置为1000，因此在处理运行一段时间之前您不会看到此问题。在某些方面，.NET 3.5中的默认会话限制在10处更好，因为如果您遇到的情况很快就会非常明显

我写了一段关于会议的blog post

打开操作超时 - WCF Web服务

1 个答案: