ddwtp13

.swift

import UIKit
import Combine
import Network

final class BonjourBrowser: NSObject, ObservableObject, Identifiable {
  
  struct objectOf:Hashable {
    var id:UUID? = UUID()
    var device:String = ""
    var IsIndexed:Int = 0
  }
  
  @Published var devices: [objectOf] = [] {
    willSet {
      objectWillChange.send()
    }
  }
  
  var browser: NWBrowser!
  
  func seek(typeOf: String) {
    let bonjourTCP = NWBrowser.Descriptor.bonjour(type: typeOf , domain: nil)
    let bonjourParms = NWParameters.init()
    browser = NWBrowser(for: bonjourTCP, using: bonjourParms)
    browser.stateUpdateHandler = {newState in
      switch newState {
      case .ready:
        print("new bonjour connection")
      default:
        break
      }
    }
    browser.browseResultsChangedHandler = { ( results, changes ) in
      for change in changes {
        if case .added(let added) = change {
          if case .service(let service) = added.endpoint {
            let device = objectOf(device: service.name, IsIndexed: self.devices.count)
            self.devices.append(device)
          }
          if case .removed(let removed) = change {
            if case .service(let service) = removed.endpoint {
              let index = self.devices.firstIndex(where:{$0.device == service.name })
              self.devices.remove(at: index!)
            }
          }
        }
      }
    }
    self.browser.start(queue: DispatchQueue.main)
  }
}