How would I go about streaming audio FROM an iOS device to another device like a Mac or another iOS device? I can only find solutions like AirPlay on Google and nothing abou
crude VOIP use case:
Step 1. record audio with AV Foundation using a compressive encoder
Step 2. Stream packets to another device (ie RTP)
Step 3. Decode & play the audio packets on the remote device
More complex VOIP uses case include discovering users, establishing connections.
These links might get you started
http://developer.apple.com/library/ios/#DOCUMENTATION/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html
http://en.wikipedia.org/wiki/Real-time_Transport_Protocol