iOS14 Local Network

Utils.swift

import Foundation
import Network

public class Utils {
    
    static func requestLocalNetworkAuthorization(_ timeout: Int = 1, completion: @escaping (_ granted: Bool) -> Void) {
        let ipv4 = getIPv4Address() ?? "127.0.0.1"
        var ipArr = ipv4.split(separator: ".")
        ipArr[ipArr.count - 1] = "1"
        let routerIp = ipArr.joined(separator: ".")

        let ip = IPv4Address(routerIp) ?? .loopback

        let queue = DispatchQueue(label: "Monitor")
        let connection = NWConnection(host: .ipv4(ip), port: .http, using: .udp)
        connection.start(queue: queue)

        connection.stateUpdateHandler = { newState in
            print(newState)
            switch newState {
            case .ready:
                print("连接已准备就绪")
                completion(true)
            case .failed(let error):
                print("连接失败：\(error.localizedDescription)")
                completion(false)
            case .cancelled:
                print("连接超时取消")
                completion(false)
            default:
                break
            }
        }

        let timeout = DispatchTimeInterval.seconds(timeout)
        let deadline = DispatchTime.now() + timeout
        // Set timeout
        DispatchQueue.main.asyncAfter(deadline: deadline) {
            if connection.state == .waiting(.posix(.ENETDOWN)) || connection.state == .preparing {
                print("Connection timed out.")
                connection.cancel()
            }
        }
    }
}