iOS Which framework should be used to send and receive audio data from a custom device?

[HariRPanicker]

I have a device, more like a headset with mic. Which framework is apt to receive audio from the device in my app and send back another audio?
I had reached conclusion on External Accessory framework but then in further research found similiar functionality in Multipeer Connectivity framework. In that case I can skip MFi certification process. Which will be more apt for my purpose?


Follow up question: Is there any way around MFi certification for using External Accessory framework?

 

[firewood]

At least 4 possible wired solutions:

• MFi enrollment and certification of your custom device
• Convert your devices IO to/from analog audio, and use a Lightning headset adapter
• Camera Connection Kit + having your device imitate the USB Audio device class profile
• Camera Connection Kit + USB to Ethernet adapter + Raspberry Pi (or equivalent) + digital IO pins (or USB, etc.) to connect to your device

You could also connect to a Raspberry Pi via WiFi, and talk to device through the Pi's IO pins that way.