Hi, all I know when the client login into the server, it gets a sessionid which is always different from the sessionid last time it got. So the server think this is a new client and send messages(the client maybe received before) to it.
I want client received the message once and only once, even if the client is restarted.How should I do? Is there any way that server remembers the client which is logout just and then login again? thanks for you help. liuwen.
