Re: [lwip-users] lwip raw TCP client.

[Pomeroy, Marty]

> But I wonder, if both ends do close the socket normally, would the PCB
end up in a TIME_WAIT?


The reason for the TIME_WAIT (past the successful and ACK'd closes) is
to make sure wandering left-over packets don't show up in a newly opened
socket.  Without the TIME_WAIT, some intermediate router could
retransmit something, and bogus data could be injected into the newly
opened stream using the old port numbers.

So the TIME_WAIT is to let all packets floating around "out there" from
that connection fully "decay".  The point is to avoid re-use of ports
too soon.

Marty