Re: [lwip-users] tcp_recved

[address@hidden]

Charles Landau wrote:
> I'm confused about how to use the procedure tcp_recved().
>
> There is an example of its use in do_recv() in api/api_msg.c. The 
> comment on that procedure says "Recv some data from a RAW or UDP pcb" 
> which seems clearly wrong.
>   
I don't know that passage from heart, but of course, tcp_recved is for 
TCP only.
> If someone can explain how to use tcp_recved and what it means for 
> storage management, I'll document it at lwip.wikia.com. I don't have the 
> authority to update api/api_msg.c.
tcp_recved means that you have processed the data and result in a window 
update (in contrast to an ACK, which is sent when lwIP successfully 
received a correct TCP frame).
'Storage management' is the responsibility of your application (if using 
raw or netconn API): if you received a pbuf from one of the functions, 
you are responsible for it.

Simon