[lwip-devel] [bug #20021] conn->sem is only signaled one-way

[Simon Goldschmidt]

Follow-up Comment #28, bug #20021 (project lwip):

Hm, I think we need to change tcp_close: it returns an error if tcp_output()
returns an error at the end. But this would only be true for SO_LINGER, other
connections would send in the background (through timers).

With that change (don't care for tcp_output return value),
api_msg.c:do_close_internal() would get simpler!

I'll change it to that, we can change it back later if you others disagree
;-)


Implementing linger on that is a little bit trickier, since when calling
later, the connection could already have been deallocated. I think that would
require more changes to tcp_close()...

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