Hi, We are developing a VoIP application on iOS using BSD sockets. We need to populate the SIP Via and Contact headers with the IP address that the SIP packet will be sent on to a particular destination. getifaddrs will present a list of interfaces and IP addresses but doesn't tell us which interface will be used. Anyone know which APIs we should be using to get this information Thanks

Hi I would like to obtain the number and device names of camera devices connected to a Mac using Mac Catalyst APIs and allow the use to select between the built in web cam and an external USB web cam. Can anyone say which framework to use here. I've looked at Core Video and Core Media but they don't seem to give that information. Thanks