Re: [lwip-users] udp_recv: read destination address

[Simon Goldschmidt]

chrysn wrote:
> updating the libcoap library's lwip port, i'll need to know which
> network address the package i'm just udp_recv'ing was sent to. (this is
> a requirement of rfc7252, which has sections that only apply if the
> receiving address is a multicast address).
> 
> has there been any change on this subject since 2006[1]?

Yes: ip_current_dest_addr() (and related defines in ip.h) should be what you 
need. But be aware it is only valid during your callback.


Simon