how to detect WCF service shutdown or disconnect from client?

Question

I'm building a WCF service,after a client connects to this service,when the service disconnect, the client doesn't notice that, and it doesn't fire any action, i would like to close client form whenever the connection lost,so how would i detect WCF service disconnect or shutdown from client side.

score 6 · Accepted Answer · edited May 23 '17 at 12:24

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A simple approach is the client will call a simple method in service called IsAlive() just returns true as described in this thread.

There is another way you could achieve this using the new Discovery/Announcement features that comes with WCF 4. Though I haven't tried but this feature helps you to make the service notify the client if it gets into offline/shutdown.

Here is an example post.

You can google "WCF announement service" and you'll get some good reference materials.

edited May 23 '17 at 12:24

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answered Jun 15 '12 at 03:08

VJAI

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yea I've used Discovery before .. but i don't think using discovery all connection live is a good idea.. because it searches for all servers ... and announcement wouldn't work if the connection lost (machine shutdown/cable unplugged) .. but i will check the IsAlive() thing and reply you .. thanks for your answer :) – Murhaf Sousli Jun 15 '12 at 06:04

score 3 · Answer 2 · edited May 23 '17 at 12:30

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You should probably just set up a timer that will continually ping the server, and if the fails, fire an event that the service is no longer available.

This answer also has some good suggestions.

WCF - have client check for service availability

edited May 23 '17 at 12:30

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answered Jun 15 '12 at 02:33

Kevin DiTraglia

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cool, can you give an example of doing a ping to a wcf service? – Murhaf Sousli Jun 15 '12 at 02:41
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Create an operation on your contract called `Ping` that is takes no parameters and returns a `bool` of `true`. There's your ping. – Jesse C. Slicer Jun 15 '12 at 03:13

how to detect WCF service shutdown or disconnect from client?

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