FreeBSD TCP ignores zero window size
andre at freebsd.org
Wed Apr 4 10:13:17 UTC 2012
On 04.04.2012 17:03, perryh at pluto.rain.com wrote:
> Andre Oppermann<andre at freebsd.org> wrote:
>> The other side is retransmitting data we have already received
>> and acknowledged ... That behavior is totally non-compliant.
> Any chance our ack of that data got dropped/lost enroute, and the
> other side is resending after timing out?
The correct ACK is retransmitted about a dozen times for
re-synchronization. Unlikely that all of them get lost.
On top of it the RST to terminate the session has the
correct SEQ. Something's munging the SEQ/ACK space along
the way here.
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