c# wcf duplex communication -

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i have write online chess program using wcf. i'm new service programming, please give me advice.

i thought of using duplex communication, service poll database , call client, if opponent has made new step. don't think quite optimal solution. please tell me better alternatives can here?

thanks lot.

depends on type of clients use service. if example clients .net clients use wcf net.tcp communication , set callback contract clients need implement , service can call when makes move. if use other type of clients polling best way go.


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