title: Peripheral not connecting - Swift
body: <p>Within my Swift app, I have a view that is supposed to find a bluetooth device and connect to it. The bluetooth device is powered on. I am able to scan and find the device, after which I call on the function to connect to it, but I get no feedback. I am not sure why it is not able to connect.</p>
  
  <p>Neither didFailToConnectPeripheral or didConnectPeripheral are returning any values.</p>
  
  <p>How do I get this to work?</p>
  
  <pre><code>import UIKit
  import CoreBluetooth
  
  class ViewController: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {
  
      var manager: CBCentralManager!
  
  
      override func viewDidLoad() {
          super.viewDidLoad()
          manager = CBCentralManager (delegate: self, queue: nil)
      }
  
  
      func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
  
          print("Peripheral: \(peripheral)")
  
          manager.connectPeripheral(peripheral, options:nil)
  
          manager.stopScan()
  
      }
  
  
  
      func centralManager(central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) {
          print("connected!")
      }
  
      func centralManager(central: CBCentralManager, didDisconnectPeripheral
          peripheral: CBPeripheral, error: NSError?) {
              print("disconnected!")
      }
  
  
      func centralManager(central: CBCentralManager,
          didFailToConnectPeripheral peripheral: CBPeripheral, error: NSError?) {
              print("failed")
      }
  
  
      func centralManagerDidUpdateState(central: CBCentralManager) {
          print("Checking")
          switch(central.state)
          {
          case.Unsupported:
              print("BLE is not supported")
          case.Unauthorized:
              print("BLE is unauthorized")
          case.Unknown:
              print("BLE is Unknown")
          case.Resetting:
              print("BLE is Resetting")
          case.PoweredOff:
              print("BLE service is powered off")
          case.PoweredOn:
              print("BLE service is powered on")
              print("Start Scanning")
              manager.scanForPeripheralsWithServices(nil, options: nil)
          default:
              print("default state")
          }
      }
  }
  </code></pre>