Re: [lwip-users] Data passed to UDP receive callback

[address@hidden]

Ben Hastings wrote:
> On a side note, what happens if the pbuf is freed before the end of the
> callback?  Does that also free the memory that the address pointer
> points to?
>   

That's a good point. Since p->ref is (almost always) == 1 at the point 
where the pbuf is passed to the receive callback, it will get freed when 
pbuf_free(p) is called. I'd still vote for copying the address before 
calling the receive callback function. It might be a *little* less 
performant, but safer.

Simon