On 2019-11-12 7:38 a.m., Patrick Herbst wrote: > If i setup a DTLS server, the client can connect once and send > messages find. but if the client restarts and tries to send data, the > server hangs on SSL_read. How are you handling the sockets on the server? If you are creating a new 5-tuple [bind/connect] socket on the server for each client, and the client then reuses it's socket, then it's trying to speak the old instance on the server. > I'm assuming the server does not like a clienthello message when it is > expecting application data. > > How can the server be made to recover and re-handshake with the > restarted client? Close the UDP socket on the client and open a new one to get a new source port. Does that work? I'm not terribly happy with this solution, but it does match what TCP would do.
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