Test recover

test.swift

import UIKit
import Ably

class ViewController: UIViewController {
  
  var serial:Int64 = 0;
  var recover:String = "";
  let options = ARTClientOptions()

  override func viewDidLoad() {
    super.viewDidLoad()
    options.key = "KEY"
    let firstClient = ARTRealtime(options: options)
    let firstChannel = firstClient.channels.get("test")
    firstChannel.on(.attached) { _ in
      firstChannel.publish(nil, data: "message", callback: { errorInfo in
        if (errorInfo == nil) {
          self.serial = firstClient.connection.serial
          self.recover = firstClient.connection.recoveryKey!
          print("serial is \(self.serial)")
          self.useSecondClient()
        }
      })
    }
    firstChannel.attach()
  }
  
  func useSecondClient() {
    options.recover = self.recover
    let secondClient = ARTRealtime(options: options)
    let secondChannel = secondClient.channels.get("test")
    secondChannel.on(.attached) { _ in
      secondChannel.subscribe{ _ in
        print("secondClient.connection.serial \(secondClient.connection.serial)")
      }
      secondChannel.publish(nil, data: "message2", callback: { errorInfo in
        if (errorInfo == nil) {
          print("Second message published")
        }
      })
    }
    secondChannel.attach()
  }

}