Re: [lwip-users] Queued segments not being sent

[Jonathan Larmour]

Bill Auerbach wrote:
> Yeah, you’re right.
> 
>  
> 
> The good news is, I found the problem.  That tcp_poll routine sneaks in
> and was calling send_data (my version of it) and this threw off my one
> to one relationship of calling tcp_write and having tcp_sent be used to
> free the data.  I’m not sure what the purpose of tcp_poll is, but it was
> getting in my way.

It's called every TCP slow timer interval for any sort of timeout
processing you may want to do. This saves raw API apps having to have some
other means of setting up a timer.

Jifl
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