Thanks Erel. I'm assuming the other devices would be running my app. Is there any way of using a wild card in the IP / port address so I could send out messages to all attatched devices snd they could send me their details (port num, etc).
I'm trying to develop a local area network chat system in which users simply log into the network and run my app to start. I'm using UDP.
I would probably provide a wireless router for users to log onto.
That said - it is possible to communicate directly to other users in a hotspot if you exchange IP addresses and port numbers. I know this works because I've tried it with my app in a number of venues without issues.
All I want is to be able to allow the users to bypass this manual exchange of IP addresses and port numbers.