process termination

I have 2 processes and they send UDP messeges. They don't read the messages immeditely 开发者_运维问答and sometimes when they read the messages they can read a bulk of them. I saw that when one of the processes is down the other one is still getting those messages.

How come ? it is down.

Thanks

You keep getting packets after one process crashes because the OS buffers the incoming packets. See for example this discussion on UDP Buffering.

When working with unconnected UDP sockets there is no way for either pier to know if the other pier has crashed other than sending round trip keep alive packets.