Is there any way to recycle a WCF service hosted in Windows service?

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I've developed a WCF service which I'd like to host as Windows service. Unfortunately my WCF service produce some memory leaks (it uses third-party components so I can't fix this). I'd like to have an ability to recycle a service time to time. Can I do it with windows service? I wouldn't like to move to IIS or WAS, as I want to host the service on XP machine.

Posted 23-Feb-11 5:31am

Igor Merabishvili

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2 solutions

Solution 1

I faced exactly the same problem once. I fixed it by running a batch file using Scheduled Tasks on a defined interval that stopped and restarted the service. I think it went something like this:

net stop [ServiceName Here]
net start [ServiceName Here]

It wasn't pretty, but it worked.

Posted 23-Feb-11 5:37am

jim lahey

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Igor Merabishvili 23-Feb-11 11:41am

Thanks Jim,

if I can't find a better solution then I'll probably use this one.

Igor

Yusuf 25-Feb-11 11:58am

of course this may help, but there are few caveat to it.
1. What if the service hangs before the next stop/start time?
2. What if the service stop/start fails in the schedules tasks?

We're faced with similar issue, we come up with a different solution. See my Answer for the solution.

BTW, +5 for your answer.

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Yusuf · Accepted Answer · 2011-02-23T05:41:00

Solution 2

In windows service there is no notion of recycling. We had similar situation long time back. What we did was, we created service monitor. The service monitor was responsible for starting/stopping and recycling the main service.

Posted 23-Feb-11 5:41am

Yusuf

Comments

Espen Harlinn 25-Feb-11 11:26am

Good idea, my 5

Igor Merabishvili 28-Feb-11 10:28am

Hi Yusuf,

may be you have somewhere the code sample as well (if it's not too much to ask ;)

Igor

Yusuf 28-Feb-11 11:35am

This should be that hard to write, it is simply your service watchdog.

1. You need to check if the service is installed. See http://stackoverflow.com/questions/4554116/how-to-check-if-a-windows-service-is-installed-in-c
2. Get the status of your service. See http://stackoverflow.com/questions/178147/how-can-i-verify-if-a-windows-service-is-running
3. On some given time interval recycle your service.

That is all.

Igor Merabishvili 1-Mar-11 9:56am

If it's just that then you are right. I thought about graceful restart, where the request kept by the monitor in the meantime and then delivered to the new instance.