My app has to find a certain bonjour service on the local network and my code works fine for iOS 12/13 as well as macOS Big Sur and Catalina.
The exact same code fails on iOS and iPadOS 14 with this error:
["NSNetServicesErrorDomain": 10, "NSNetServicesErrorCode": -72000]
Which I have looked into and -72000 is an "Unknown error".
I am using NetServiceBrowser to find the service and here is my code:
class Bonjour: NSObject {
var discovered: [DiscoveredInstance] = []
let bonjourBrowser = NetServiceBrowser()
var discoveredService: NetService?
override init() {
super.init()
bonjourBrowser.delegate = self
startDiscovery()
}
func startDiscovery() {
self.bonjourBrowser.searchForServices(ofType: "_some-service._tcp.", inDomain: "local")
}
}
extension Bonjour: NetServiceBrowserDelegate, NetServiceDelegate {
func netServiceBrowser(_ browser: NetServiceBrowser, didFind service: NetService, moreComing: Bool) {
discoveredService = service
discoveredService?.delegate = self
discoveredService?.resolve(withTimeout: 3)
}
func netServiceBrowser(_ browser: NetServiceBrowser, didNotSearch errorDict: [String : NSNumber]) {
print(errorDict)
}
func netServiceBrowser(_ browser: NetServiceBrowser, didRemove service: NetService, moreComing: Bool) {
self.discovered.removeAll { $0.name == service.name }
}
func netServiceDidResolveAddress(_ sender: NetService) {
if let data = sender.txtRecordData() {
let dict = NetService.dictionary(fromTXTRecord: data)
/// do stuff with txtRecord dict here and then add to discovered array.
discoveredService = nil
}
}
}
I have no idea what could be causing the error and have tried enabling networking permissions and capabilities but have not been able to stop the error from occurring.
Thanks.
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