The working principle of Bluetooth to Wifi gateways is pretty simple. What you need to do is pair the Bluetooth device with the Bluetooth gateway device. The Bluetooth / WiFi gateway works by scanning for Bluetooth devices within its range. Once the gateway finds the device, it examines the business and characteristic data structure of the device. After that, the gateway processes requests for HTTP or other communication protocols.
When the Bluetooth / WiFi gateway processes HTTP requests for data structures, it uses cached data for processing. This is because the cached data helps the gateway respond to most requests. However, if the gateway finds a real data request from a Bluetooth device, it immediately initiates the connection to the Bluetooth device. This helps the gateway obtain the data immediately.