At present, I have chat project using WCF duplex. But I have issue related to callback which is implemented in client side. When client hit disconnect button, it works well, but in case, client crashed for some resaons as disconnecting network, shutdown...
After that, service dont know client disconnected and remove it form list of online clients.
Now I want to detect disconnected client as fast as possible for any reasons.
Any body help me .
Thank so much.
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