Demonstration of using Core Bluetooth L2CAP channels in Swift on iOS. Use the L2Cap swift module
You will need two iOS devices to run this demo. Bluetooth is not supported in the simulator.
On one device, turn on the Scan switch - this device is the central that will look for a peripheral On the other device, turn on tyhe Advertise switch - This device is the peripheral.
Once a connection is made, text entered into the text field on the central will be displayed on the peripheral when you tap Send