[ENet-discuss] Optimizing ENet Protocol ?

[Emmanuel Rivoire]

Hello,

At 17:32 24/05/2012, you wrote:
> > peerID should be deducted from packet's sender IP & Port which are in
> > ENetHost::receivedAddress .
>
>Bear in mind that a senders port can change if they're behind a NAT. Some
>NATs will move the port that they're using for your UDP datagrams around,
>they know nothing of the 'connection' that you have between two peers and so
>it's quite valid for them to send every single datagram out on a different
>port if they wanted to - they don't, but I've certainly seen peers move from
>one port to another mid connection. Without a peer ID there's no way for you
>to keep the connection open if this happens.

Does the UDP packet's header contain the port of the Router or the 
initial sender port ? I'd guess the later, as when you send some 
packet back to that send, you always send to the same port.
Also, I never really noticed that problem with my games, so hopefully 
it doesn't happen often.
Anyway, I'll do a loose bind then, ie: if there's no perfect IP / 
Port match, I'd do only a IP match, that should be ok in my case.

Thanks for the warning !