Re: [lwip-users] http server and pbuf overflow

[address@hidden]

Bernhard 'Gustl' Bauer wrote:
> Hi,
>
> I'm using lwip 1.3.0 and sometimes I have a pbuf overflow.
>    
First of all, only to make sure what you mean, are you referring to the 
PBUF_POOL running out of pbufs?
> I'm not sure I understand the pbuf concept.
You have to call pbuf_free() on every pbuf chain passed to your 
application (via the receive callback). If can chain two chains together 
using pbuf_cat(), you only have to call pbuf_free() on the head of the 
chain.
>   I have some data transfers
> that exceed 1 tcp packet.
>
> Every time http_recv is called I check if this is the 1st packet. If it
> is I set a pointer to this pbuf and do not free this pbuf. If it is not
> the 1st packet I store the data and free this pbuf.
>    
What do you mean by 'store the data and free this pbuf'?

Simon