[lwip-devel] [bug #48839] Possible bug with snd_wnd semantics

[Simon Goldschmidt]

Update of bug #48839 (project lwip):

                  Status:                    None => Confirmed              
             Assigned to:                    None => goldsimon              

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Follow-up Comment #2:

I see this is a theoretical inconsistency in lwIP's usage of variables. And
having code where two 'if' clauses depend on different input but trigger at
the same time is bad coding style.

But I'm not convinced this is a real bug (or a bug in the spec):
To convince me, you'd have to come up with a sequence of segments that
produces this error.
In other words, if we receive an ACK that updates 'lastack', how would that
segment fail to update 'snd_wl2'? I guess if you trust on the remote side
being a good TCP, this never happens.

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