WCF服务在一段时间后自行消亡

我面临一个与托管WCF服务相关的特殊问题（.NET Framework 4、IIS 7、Windows 2008标准SP2）

在我部署该服务后，它可以正常工作一段时间，并通过抛出一个“未找到文件”异常自行终止。例外情况详情如下所示

该应用程序托管在IIS7中，有一个指向.NET Framework 4版本的特定应用程序池。我已经使用FusionLog找到了更多关于丢失的组件的信息—不走运。但是，如果我从托管服务器中删除所有程序集，并从生成文件夹中再次复制它，它将重新开始工作，而不会出现任何问题。我无法解释这种行为，因此我进行了大量的搜索/尝试以找到答案。为了提供更多信息，该服务是一个本地程序集，我使用企业库进行异常处理和日志记录。WCF使用httpBinding为我们提供服务。这些程序集是调试生成的。请帮忙

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <configSections>
    ------    
  <!-- Begin .......Exception Handling Configuration-->
  <!-- End .........Exception Handling configuration-->

  <!-- Start .............Logging Configuration-->
  <!--End............ Logging Configuration-->

  <system.web>
    <compilation debug="true" targetFramework="4.0" />
        <identity impersonate="true" />
  </system.web>
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
        <defaultDocument>
            <files>
                <add value="Service.svc" />
            </files>
        </defaultDocument>
    </system.webServer>

    <!-- Start WCF ................Settings-->
  <system.serviceModel>
    <diagnostics>
      <messageLogging logEntireMessage="true" logMessagesAtServiceLevel="true" />
      <endToEndTracing propagateActivity="true" activityTracing="true" messageFlowTracing="true" />
    </diagnostics>
    <!-- Begin..Included for Switching off Security-->
    <bindings>
      <basicHttpBinding>
        <binding name="httpBindingConfig" closeTimeout="24.01:00:00" openTimeout="24.01:00:00" receiveTimeout="24.10:00:00" sendTimeout="24.01:00:00" />
      </basicHttpBinding>
    </bindings>
    <!-- End ..Included for Switching off Security-->
    <services>
      <service name="Service">
        <endpoint binding="mexTcpBinding" bindingConfiguration="" name="EndPointMex" contract="ICommunicatorService" />
        <endpoint address="http://<>/Service.svc" binding="basicHttpBinding" bindingConfiguration="" name="EndPointHttp" contract="Reflections.IService" />
        <host>
          <timeouts closeTimeout="24.00:10:00" openTimeout="24.01:00:00" />
        </host>
      </service>
    </services>
    <behaviors>
    <serviceBehaviors>
      <behavior>
        <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
        <serviceMetadata httpGetEnabled="true" />
        <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
        <serviceDebug includeExceptionDetailInFaults="true" />
      </behavior>
    </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <!-- End WCF ................Settings-->  
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
  </system.webServer>
 </configuration>

融合日志中的错误

*** Assembly Binder Log Entry  (7/22/2011 @ 10:34:51 AM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  c:\windows\system32\inetsrv\w3wp.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: User = NT AUTHORITY\NETWORK SERVICE
LOG: DisplayName = Reflections.Service, Version=1.0.0.0, Culture=en-US, PublicKeyToken=fb2997440781f12e
 (Fully-specified)
LOG: Appbase = file://path/
LOG: Initial PrivatePath = \\path\bin
LOG: Dynamic Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b44c783a
LOG: Cache Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b44c783a
LOG: AppName = 34485861
Calling assembly : (Unknown).
===
LOG: Start binding of native image Reflections.Service, Version=1.0.0.0, Culture=en-US, PublicKeyToken=fb2997440781f12e.
WRN: No matching native image found.

这里讨论了一个类似的问题，但找不到答案

是否可能找不到的文件是一个麻烦，而您只是遇到了一个不活动超时？我记得当我编写第一个WCF服务时，我没有意识到超时设置默认为相当短的时间，比如几分钟。我想你可以把它们设置得很长（比如24天）

在我的应用程序配置中，在我的分区之后的分区中，我有：

    <system.serviceModel>
    <bindings>
        <netTcpBinding>
            <binding name="tcp_unsecured" receiveTimeout="infinite" sendTimeout="00:00:30">
                <security mode="None">
                </security>
            </binding>
        </netTcpBinding>
    </bindings>

---

托德-谢谢你抽出时间，我真的很感谢你的帮助。你是指首先让我说我不是专家，我只有自我托管和windows服务托管。我将在我的app.config中发布我更改过的部分，但最终我的服务由于其他原因被应用程序通过计时器ping到，因此始终无法超时。我不确定我是否已经确定了超时设置。但是你可以在这里进行更好的搜索，现在你知道了它们的存在。汤姆-我仍然有这个问题，建议的设置没有帮助。我的live服务在15 mts后停止。我唯一能建议的是尝试确认它是超时问题。您可以启动计时器，让它每分钟向您的服务发送一次请求。如果它仍然死了，那就不是超时错误。我已经编辑了我的原始问题，将web.config文件包括在内。就投票而言，我没有足够的分数。Appologies.it正在查找名为Reflections.Service的文件。这是容纳您的服务的程序集的名称吗？@Anil-您可以在hadrware环境中提供任何其他详细信息吗？这里有硬件集群吗？此外，您不应该这样做，但您是否考虑过将服务创建为WCF库并手动将其托管在IIS中？这将允许你把你的服务库扔到GAC中——无法想象它会从那里被删除！

*** Assembly Binder Log Entry  (7/22/2011 @ 10:34:51 AM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  c:\windows\system32\inetsrv\w3wp.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: User = NT AUTHORITY\NETWORK SERVICE
LOG: DisplayName = Reflections.Service, Version=1.0.0.0, Culture=en-US, PublicKeyToken=fb2997440781f12e
 (Fully-specified)
LOG: Appbase = file://path/
LOG: Initial PrivatePath = \\path\bin
LOG: Dynamic Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b44c783a
LOG: Cache Base = C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\b44c783a
LOG: AppName = 34485861
Calling assembly : (Unknown).
===
LOG: Start binding of native image Reflections.Service, Version=1.0.0.0, Culture=en-US, PublicKeyToken=fb2997440781f12e.
WRN: No matching native image found.

    <system.serviceModel>
    <bindings>
        <netTcpBinding>
            <binding name="tcp_unsecured" receiveTimeout="infinite" sendTimeout="00:00:30">
                <security mode="None">
                </security>
            </binding>
        </netTcpBinding>
    </bindings>

    public DspServiceMediator( String serviceAddress)
    {
        EndpointAddress end_point = new EndpointAddress(serviceAddress);
        NetTcpBinding new_tcp = new NetTcpBinding(SecurityMode.None)
                                {ReceiveTimeout = TimeSpan.MaxValue,
                                 SendTimeout = new TimeSpan(0, 0, 30)
                                };

        _dspClient = new DspServiceClient(new_tcp, end_point);
    }