Re: [lwip-users] Delay during transmission

[Kieran Mansley]

On Wed, 2010-03-10 at 05:04 -0800, JM wrote:
> I should have attached that right away.  It's now attached, although
> this capture is apparently not the same as the one I used to extract
> the text summary.  In any case, the symptoms and lwIP code are the
> same.

That is quite odd.  I can't think of anything in lwIP that would exhibit
that behaviour.  Are you sure the application is calling lwIP with more
data to send?  It could just be that there is nothing in the send queue,
then 2 seconds later the app gives lwIP more data to send.  The window
update is usually also triggered by an application calling tcp_recved(),
so that would fit.

Did tcp_write() return an error at any time?

Kieran