Thank you for your detailed answer.
I have the following code in the LanDiscoveryService:
init() {
setupBrowser()
}
func startDiscovery() {
if browser == nil { setupBrowser() }
if browser!.state == .ready { return } //Already running
browser!.start(queue: DispatchQueue.main)
}
func stopDiscovery() {
browser?.cancel()
browser = nil
}
If I now add a browser?.cancel() call at the end of init() I indeed get the exact same crash, so it seems that stopDiscovery() was called before startDiscovery(), which would set the queue. I'm uncertain how this can happen in my code, or why I initialised the browser in init(), so I've plenty of options to explore now to resolve this crash!
Many thanks!
RemcoPoelstra
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