Thank you eskimo for the response. Can you share some high-level APIs that can provide a response for local network access permission?
I changed the code to be more in line with the documentation for DNSServiceProcessResult and DNSServiceBrowse
What do you think?
let startTime = Date()
let pointer: UnsafePointerInt8? = NSString(string: "_services._dns-sd._udp").utf8String
var browseRef: DNSServiceRef?
DNSServiceBrowse(&browseRef, 0, 0, pointer, nil, self?.browseCallback, nil)
let socket = DNSServiceRefSockFD(browseRef)
let readSource = DispatchSource.makeReadSource(fileDescriptor: socket, queue: DispatchQueue(label: "com.x.y.z"))
readSource.setEventHandler() {
DNSServiceProcessResult(browseRef)
DNSServiceRefDeallocate(browseRef)
}
readSource.resume()
repeat {
RunLoop.current.run(mode: .default, before: NSDate.distantFuture)
} while (Date().timeIntervalSince(startTime) = TimeInterval(5)); // Waits for 5 seconds and then proceeds
