[lwip-users] udp

[David Haas]

Hi all,

I am using UDP for the first time with lwip and I am running into a few 
issues.

Numero Uno: The sockets interface for TCP copies data when you call 
send() into the socket and the application can safely dispose of the 
buffer afterwards. However for UDP, the sockets interface passes the 
data through without copying it. I do believe that UDP should not 
default to this kind of operation. After all, how do you know when you 
can free the application buffer? Especially if your packet winds up on 
the ARP queue.

Would anyone have any objection if I "fix" this for the sockets 
interface to copy the data into a UDP socket when sendto() is called?

David.