Check client connection status in Server

[mohammadnejad]

Hello, In bidirectional streaming How I can check client connection status? I am developing multiplayer online game with your library and I want to know when one player disconnect and notify to other players?

[marcoferrer]

I’ll be able to give you a more explicit answer a little later. But in the mean time this example might be of some use. It’s a demo of a multi-player game for a talk. leveretka/grpc-death-star#3

I know for sure that if a client disconnects it will send a cancellation to the server that can be handled and used to notify the other subscribers

[mohammadnejad]

Yes, when client disconnects I handle cancellation notification and everything is OK, but when internet in client disconnects, client can't send cancellation notification to server and I can't handle it.

[marcoferrer]

When the network disconnects the grpc server should invoke the cancellation callback as well. I havent tried it explicitly but it is mentioned in ServerCall.onCancel()

[mohammadnejad]

I handle the problem with config keepalivetime and keepalivetimout. Server ping client every 20 seconds and when the network disconnects the server close stream.