[lwip-devel] [bug #52403] netconn: FIN may be sent instead of RST when TCP netconn is closed with pending data in recv_mbox

[Simon Goldschmidt]

Update of bug #52403 (project lwip):

                  Status:                    None => Confirmed              
             Assigned to:                    None => goldsimon              
                 Summary: lwIP TCP implementation violate RFC2525 section 2.17
=> netconn: FIN may be sent instead of RST when TCP netconn is closed with
pending data in recv_mbox

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Follow-up Comment #3:

OK, so the short version is that in your specific situation, a FIN was sent
instead of a RST because netconn_drain calls tcp_recved, which it probably
shouldn't?

That analysis sounds correct, tcp_recved should really not be called in this
case.

Updated summary accordingly.

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