WCF ServiceHost回调不稳定

Question

问题

最可重现的方案是从托盘应用程序上的链接启动桌面应用程序，然后通过回调请求桌面应用程序执行某些操作。这实际上总是抛出超时错误作为其他后续错误。

WCF环境：

服务器：系统托盘小程序

客户端：WinForms桌面应用程序

资源：

从托盘启动桌面应用程序的方法

// Start the process.
ProcessStartInfo oProcessInfo = new ProcessStartInfo()
{
    FileName = regValue.ToString(),
    WindowStyle = ProcessWindowStyle.Normal,
    UseShellExecute = true,
    CreateNoWindow = false,
};
Process oProcess = new Process()
{
    StartInfo = oProcessInfo,
};
oProcess.Start();

我打几次电话，但第一次通话时互动不一定会失败。这是一个示例调用：

var callback = IpcToTray.Callback;
if (null == callback)
    return 0;

UInt16 idIsLaunched = callback.IsAppLaunched();
if (Id_AppIsLaunched == idIsLaunched)
    return true;

我目前正在使用PerCall，但使用的是PerSession。两者都无济于事。

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]
public class IpcToTray : IIpcToTray
{
}

以下是一些错误：

System.TimeoutException
  HResult=0x80131505
  Message=This request operation sent to http://schemas.microsoft.com/2005/12/ServiceModel/Addressing/Anonymous did not receive a reply within the configured timeout (00:00:10).  The time allotted to this operation may have been a portion of a longer timeout.  This may be because the service is still processing the operation or because the service was unable to send a reply message.  Please consider increasing the operation timeout (by casting the channel/proxy to IContextChannel and setting the OperationTimeout property) and ensure that the service is able to connect to the client.
  Source=mscorlib
  StackTrace:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at MyAppIpc.IIpcCallbackToTray.GetMyAppMode()
   at MyAppTray.Communication.IpcFromTray.GetMyAppMode() in ...IpcFromTray.cs:line 194

System.ObjectDisposedException
  HResult=0x80131622
  Message=Cannot access a disposed object.
Object name: 'System.ServiceModel.ServiceHost'.
  Source=System.ServiceModel
  StackTrace:
   at System.ServiceModel.Channels.CommunicationObject.ThrowIfDisposedOrImmutable()
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open()
   at MyAppTray.CustomApplicationContext.StartPipeServer() in ...MyAppTrayCustomApplicationContext.cs:line 105

System.ServiceModel.CommunicationObjectAbortedException
  HResult=0x80131501
  Message=The operation 'IsAppLaunched' could not be completed because the sessionful channel timed out waiting to receive a message.  To increase the timeout, either set the receiveTimeout property on the binding in your configuration file, or set the ReceiveTimeout property on the Binding directly.
  Source=mscorlib
  StackTrace:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at MyAppIpc.IIpcCallbackToTray.IsAppLaunched()
   at MyAppTray.Communication.IpcFromTray.IsAppLaunched() in ...MyAppTrayCommunicationIpcFromTray.cs:line 142

至于我的代码，它基本上看起来像WCF进程间通信示例，具有更改的类名，但在其他方面类似，所以不需要放在这里。

我试图在失败后重新启动，但.Close()后跟.Open()并不总是有效，因为可能会处理，创建一个新的获取URI端点已经存在。我尝试了许多方法让事情变得稳定无济于事。

我现在有时间到10秒钟。原始超时为1分钟，默认为Microsoft。我认为我的申请一开始就挂了。会话内容无助于原因。我尝试添加一个延迟，Thread.Sleep（4000），但这很烦人，什么都不做。该应用程序可能是开放的，但是，再次，睡眠4000或4000000000000没有任何区别。

最重要的是，无论出于何种原因，我都无法稳定回调。是的，回调是静态的。除此之外，我没有看到任何其他方式。

思考？我此刻感到非常沮丧。