11 nov 2011 kl. 18:55 skrev Simon Goldschmidt <[email protected]>:
> Per Klint <[email protected]> wrote:
>
>> So my question is what will happen to those messages? Will they be
>> lost forever or will the lwip-stack retry again later?
>
> Yes, they will be lost, that's the intention. You have to design the mbox
> sizes in a way that thins is OK for your application.
>
>> I'd rather not change the lwip stack code. But perhaps it is possible
>> to replace all calls to sys_mbox_trypost with sys_mbox_post instead?
>
> Why would you need that?
To avoid to lose any messages!
But if it needs to work from ISR it's ofcourse not an option to do that.
> Sys_mbox_trypost is meant to work from ISR, too, so converting it is no a
> good idea.
>
>>>> Is there a way to know how many mbox:es that will be created in
>>>> the system?
>
> I think one for the tcpip_thread and one for every netconn or socket (used
> for RX packets for normal connections or accepted connections for TCP
> listeners).
>
> Simon
>
Thank you very much for your input!
Best regards,
/// Per
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