In iOS 14, Apple has put restriction on accessing local network. It requires user permission.
To show the prompt developer need to add key NSLocalNetworkUsageDescription in tiapp.xml and if using Bonjure Service, that need to be added in info.plist using key NSBonjourServices . More detail can be found in WWDC video https://developer.apple.com/videos/play/wwdc2020/10110/.
In iOS 14, new error constant is given. In titanium, it need to added in Ti.Network.BonjureService and expose as error string.