static void beginKeepAliveServiceConnection()
{//it seems to be redundant because of infinite timeout, but sometimes the channel gets closed due to errors
lock (instanceContext)
{
if (keepAliveServiceConnection_t != null && keepAliveServiceConnection_t.IsAlive)
{
return;
}
keepAliveServiceConnection_t = ThreadRoutines.StartTry(
() =>
{
do
{
try
{
lock (instanceContext)
{
_this.Subscribe();
}
Thread.Sleep(Settings.View.ServiceConnectionKeepAlivePulseTimeInMss);
}
catch (Exception e)
{
return;
}
}while (_this != null && _this.State == CommunicationState.Opened && Thread.CurrentThread == keepAliveServiceConnection_t);
},
(Exception e) =>
{
LogMessage.Error(e);
},
null
);
}
}
public static void ServiceStatusChanged(IntPtr parameter)
{
try
{
WinApi.Advapi32.SERVICE_NOTIFY n = Marshal.PtrToStructure <WinApi.Advapi32.SERVICE_NOTIFY>(parameter);
//Log.Main.Trace("Service status: " + n.ServiceStatus.dwCurrentState);
if (serviceStatus == n.ServiceStatus.dwCurrentState)//on some Windows ServiceStatusChanged is invoked many times!
{
return;
}
serviceStatus = n.ServiceStatus.dwCurrentState;
ServiceControllerStatus status;
switch (n.ServiceStatus.dwCurrentState)
{
case 1: //stopped
status = ServiceControllerStatus.Stopped;
_this = null;
break;
case 4: //running
status = ServiceControllerStatus.Running;
lock (instanceContext)
{
_this?.Unsubscribe();
_this?.Close();
_this = new CisteraScreenCaptureService.UiApiClient(instanceContext);
_this.Subscribe();
//beginKeepAliveServiceConnection();//it seems to be redundant because of infinite timeout, but sometimes the channel gets closed due to errors
}
break;
default:
throw new Exception("Unknown option: " + n.ServiceStatus.dwCurrentState);
}
Log.Main.Inform("Service status: " + status);
SysTray.This.ServiceStateChanged(status);
}
catch (Exception e)
{
Log.Main.Error(e);
}
finally
{
serviceStatusChangedManualResetEvent.Set();
}
}