Hi,
I'm working with the lwIP 1.4.1 on a TI M4 platform with rawapi and I'm
having trouble to understand the documentation correctly.
In particular the callback for tcp_recv(). In the rawapi.txt is said
"If there are no errors and the callback function is to return ERR_OK, then
it must free the pbuf.
Otherwise, it must not free the pbuf so that lwIP core code can store it."
But in the echo example there is this part:
echo_recv() {
...
else if(err != ERR_OK)
{
/* cleanup, for unkown reason */
if (p != NULL)
{
es->p = NULL;
pbuf_free(p);
}
ret_err = err;
}
The pbuf is freed AND the callback function returns an error. What would
happen with the pbuf if it is not freed?
Kind regards,
Chris
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