How to remove a published service NetService

Question

I am using the latest Swift documentation to write NetService, which am able to publish and search. But I am unable to remove service from the publisher. Not able to understand the role of RunLoop here. However, if I kill the app then service is getting removed.

This is the code am using to publish the service.

class ServicePublisher : NSObject {
    var nsNetService : NetService!
    init?(domain : String, type : String, name : String, port : Int32){
        nsNetService = NetService(domain: domain, type: type, name: name, port: port)
        if nsNetService == nil{
            return nil
        }
    }
    func publish() {
        nsNetService.publish(options:NetService.Options.listenForConnections)
    }
    func setDelegate(delegate : NetServiceDelegate) {
        nsNetService.delegate = delegate
    }
    func stop(){
        nsNetService.stop()
    }
}

Answer 1

nsNetService.stop() should stop the service and get it removed from the DNS SD. NetServiceBrowser is also able to detect the removal of service. My mistake was that I did not attached the UIButton with the function which was supposed to call stop() api and hence no service removal.