I'm using Network framework for communication between devices. The first time I instantiate an NWBrowser, it will prompt the user with a popup that says:
Allow <app name> to find devices on local networks?
The problem is, once I upgraded from Xcode 15.4 to Xcode 16.4, the popup doesn't appear; it says in the debug window:
nw_browser_fail_on_dns_error_locked [B1] nw_browser_dns_service_browse_callback failed: PolicyDenied(18,446,744,073,709,486,046)
I do have the info.plist keys Privacy-Local Network Usage Description (NSLocalNetworkUsageDescription) and Bonjour Services (NSBonjourServices) so it's not that.
Also, It still works on a real device.
I think something changed with Xcode 16 that tightened the security on a simulator, or maybe disabled Network framework entirely. It's not the firewall on my computer because that is turned off. I'm using an M1 MacBook Pro.
Given that things are failing in the simulator but working on a real device, it’s likely that you’re being hit by issue discussed in this thread.
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