Re: [lwip-users] Performance drop due port numbers reused too fast

[Jochen Strohbeck]

Hello Indan,

> Did the client ACK all data sent by the server? FIN will only be set
> when all queued data has been sent. If the client didn't ACK all data,
> the server will keep retransmitting till the socket times-out.
Yes.


> The server should eventually close the connection, but preferably after
> the client did, so the TIME_WAIT burden is put onto the client instead
> of the server. (Although they seem to just ignore the problem.)

I wonder why the lwip server does not send FIN,ACK after calling
netconn_close() and netconn_delete(). Probably there is additional code
/ action required to send FIN,ACK?

Regards,
Jochen