DHAP

iOS API

DHAP Instance

The DHAP class contains the public API for the DHAP library. To start using the library, create an instance of the DHAP class. The DHAP class does not require any parameters.






 




 



import UIKit
import DHAP

class ViewController: UIViewController {

    private var dhap: DHAP?

    override func viewDidLoad() {
        super.viewDidLoad()

        dhap = DHAP()
    }
}
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Discovery

Discover Devices

To being discovering compliant devices on the network, call the discoverDevices(completion: (DevicesResult)) method on the DHAP instance. This method has a completion handler that provides a DevicesResult enum type upon completion that indicates the result of the discovery process.



 




 

 




dhap?.discoverDevices(completion: { (result) in
    switch result {
    case .foundDevices(let devices):
        print("\(devices.count) devices found.")
        for device in devices {
            print("Device Name: \(device.name!) - \(device.location!)")
        }
    case .noDevicesFound:
        print("No devices found.")
    case .failure(let error):
        print("Something went wrong: \(error.localizedDescription)")
    }
})
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Line 3 shows the foundDevices([Device]) result. This type is defined by the DevicesResult enum shown in the code sniffet below. This result indicates that the discovery process successfully found one or more compliant devices on the network. The result also provides an array of Device structs that represent each device that was discovered. These Device structs have several properties that the real device would have including the devices MAC, IP Address, assigned name and location.

Line 8 shows the noDevicesFound result. This result indicates that the discovery process completed but was unable to find any compliant devices on the network.

Line 10 shows the failure(Error) result. This result indicates that something went wrong during the discovery process. The results provides the Error object that was caught.

public enum DevicesResult {
    case foundDevices([Device])
    case noDevicesFound
    case failure(Error)
}
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