[lwip-users] Half-Open detecting

[Steven Woody]

Hi,

As a TCP server, I want to detect half-open state that may fall in
either of the following cases:

1. Established connection broken somehow, but the peer still send
segments to me, in this case, there will not be a pcb on my side
matches.
2. Peer crashed somehow, but I still in 'established' state, then the
peer send a SYN to me. In this case, still no a connection on my side
could match.

In both cases above, I hope I can be indicated and go re-listen.  In
lwIP, how can I do this without hacking code in tcp_input()?

Best Regards,

-- 
Life is the only flaw in an otherwise perfect nonexistence
    -- Schopenhauer

narke
public key at http://subkeys.pgp.net:11371 (address@hidden)