Hello, I work with @eskimo code and it runs perfect, but I have one problem.
In my local network are more devices and I find only one of them.
Or do I get all of them and only one device is issued with
switch result {
case .success(let hostName):
print("did resolve, host: \(hostName)")
?
how I get the other one too?
--> at the end, I would like to add them to a List for using later
MaxiW
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
From
Deutschland
Post
Replies
Boosts
Views
Activity
thank you for the fast answer. I think you didn't understand me correctly. :-) i have some devices, but all have the same serviceType and name:
let service = NetService(domain: "local.", type: "_ssh._tcp", name: "mesh")
my problem is that your code find only one device of them. if I switch the founded device off, I can find the next but I need them all I hope my explanation is understandable
I've try to follow your recommend to use NWBrowser but i got only the results "start function" and "end function" with this code
public func findServices() {
print("start function")
let parameter = NWParameters()
parameter.includePeerToPeer = true
let browser = NWBrowser(for: .bonjour(type: "_mesh-http._tcp.", domain: "local."), using: parameter)
browser.stateUpdateHandler = { state in
switch state {
case .ready:
print("the sericeHandler is ready")
case .failed(let error):
print("error:", error.localizedDescription)
default:
break
}
}
browser.browseResultsChangedHandler = { result, changed in
print("in handler")
result.forEach { device in
device.interfaces.forEach {interface in
//ADD THE NAME TO A LIST
print(interface.name)
}
}
changed.forEach{change in
switch change
{
case .identical:
print("no change")
break
case .added:
print("A new result was discovered. ")
case .removed:
print("A previously discovered result was removed.")
default:
break
}
}
}
print("end function")
browser.start(queue: .main)
}
now my Solution. Please leave feedback
--> it's a combination of some answers in this forum
private func findService(with name:String) {
let service = NetService(domain: "local.", type: "_mesh-http._tcp.", name: name)
print("will resolve, service: \(service)")
BonjourResolver.resolve(service: service) { result in
switch result {
case .success(let hostName):
print("did resolve, host: \(hostName)")
case .failure(let error):
print("did not resolve, error: \(error)")
}
}
}
public func findServices()
{
let agent = BrowserAgent()
let browser = NetServiceBrowser()
browser.delegate = agent
browser.searchForServices(ofType: "_mesh-http._tcp.", inDomain: "local.")
browser.schedule(in: RunLoop.main, forMode: .common)
DispatchQueue.main.asyncAfter(deadline: .now() + 5.0) { // give the browser time to brows
print("finish")
for device in agent.getDevices(){
print(device)
self.findService(with: device)
}
}
RunLoop.main.run()
}
final class BonjourResolver: NSObject, NetServiceDelegate {
typealias CompletionHandler = (Result<(String, Int), Error>) -> Void
@discardableResult
static func resolve(service: NetService, completionHandler: @escaping CompletionHandler) -> BonjourResolver {
precondition(Thread.isMainThread)
let resolver = BonjourResolver(service: service, completionHandler: completionHandler)
resolver.start()
return resolver
}
private init(service: NetService, completionHandler: @escaping CompletionHandler) {
// We want our own copy of the service because we’re going to set a
// delegate on it but `NetService` does not conform to `NSCopying` so
// instead we create a copy by copying each property.
let copy = NetService(domain: service.domain, type: service.type, name: service.name)
self.service = copy
self.completionHandler = completionHandler
}
deinit {
assert(self.service == nil)
assert(self.completionHandler == nil)
assert(self.selfRetain == nil)
}
private var service: NetService? = nil
private var completionHandler: (CompletionHandler)? = nil
private var selfRetain: BonjourResolver? = nil
private func start() {
precondition(Thread.isMainThread)
guard let service = self.service else { fatalError() }
service.delegate = self
service.resolve(withTimeout: 3.0)
selfRetain = self
}
func stop() {
self.stop(with: .failure(CocoaError(.userCancelled)))
}
private func stop(with result: Result<(String, Int), Error>) {
precondition(Thread.isMainThread)
self.service?.delegate = nil
self.service?.stop()
self.service = nil
let completionHandler = self.completionHandler
self.completionHandler = nil
completionHandler?(result)
selfRetain = nil
}
func netServiceDidResolveAddress(_ sender: NetService) {
let hostName = sender.hostName!
let port = sender.port
if let data = sender.txtRecordData() {
let dict = NetService.dictionary(fromTXTRecord: data)
print(dict.mapValues { String(data: $0, encoding: .utf8) })
}
print("\(hostName) \(port)")
self.stop(with: .success((hostName, port)))
}
func netService(_ sender: NetService, didNotResolve errorDict: [String: NSNumber]) {
let code = (errorDict[NetService.errorCode]?.intValue)
.flatMap { NetService.ErrorCode.init(rawValue: $0) }
?? .unknownError
let error = NSError(domain: NetService.errorDomain, code: code.rawValue, userInfo: nil)
self.stop(with: .failure(error))
}
}
class ServiceAgent : NSObject, NetServiceDelegate {
func netServiceDidResolveAddress(_ sender: NetService) {
if let data = sender.txtRecordData() {
let dict = NetService.dictionary(fromTXTRecord: data)
print("Resolved: \(dict)")
print(dict.mapValues { String(data: $0, encoding: .utf8) })
}
}
}
class BrowserAgent : NSObject, NetServiceBrowserDelegate {
var currentService:NetService?
let serviceAgent = ServiceAgent()
var devices = [String]()
public func getDevices() -> [String]{
return devices
}
func netServiceBrowser(_ browser: NetServiceBrowser, didFindDomain domainString: String, moreComing: Bool) {
print("domain found: \(domainString)")
}
func netServiceBrowser(_ browser: NetServiceBrowser, didFind service: NetService, moreComing: Bool) {
print("service found: \(service.name)")
devices.append(service.name)
}
}
I make the double search because the result of func netServiceBrowser have no Mac address in the NetService-Object(it's always empty) and I need this.
the Solution works but I think it's very awkward
yes, I need to connect with all devices with this service. I send a httpRequest and get some parameter from all devices. Then I create a dynamic ListView to show DeviceInformations like Devicename, temperature, lightstate...
i find out that all devices have hostname like
device.local
device-1.local
device-2.local
....
so I have the best results if search with a for_loop
private func fillHostName()
{
let number = 30
var counter = 0
self.hostNames.removeAll()
if newHostNames.count == 0 {
while counter < number {
if counter == 0
{
self.hostNames.append(String("device.local"))
}
else
{
self.hostNames.append(String("device-\(counter).local"))
}
counter += 1
}
}
else
{
self.hostNames = self.newHostNames
}
}
self.hostNames.forEach{ host in
self.getMeshInfo(from: host)
usleep(80000)
}
I know that is "stupid polling" but it works absolut perfekt on very fast.
is there a better way?