3 ms·
Huh interesting. How did the remote know the endpoint to send the UDP packet to? I would expect NAT and firewalls would make it hard to route inbound UDP? Did t
by Karrot_Kream 3y ago
Huh interesting. How did the remote know the endpoint to send the UDP packet to? I would expect NAT and firewalls would make it hard to route inbound UDP? Did they do some sort of STUN style negotiation through HTTP?
- amaccuish 3y agoBlackBerry operated it's own GPRS APN, so all Blackberries registered directly with it from the tower, and so it always had their up-to-date location on the network.