我正在尝试检查 WiFi 辅助是否已启用。当我连接到接入点获取一些数据时遇到问题,当我的连接状况不佳时,我的蜂窝数据会被使用并干扰我的接入点。有什么方法可以检查该选项是否启用?
好吧,我想我能帮上一点忙。你需要check SCNetworkReachabilityFlags https://developer.apple.com/reference/systemconfiguration/scnetworkreachabilityflags就我而言,这将是标志的特定组合。我未能找到支持哪种标志组合表明您正在使用 WI-FI 和蜂窝网络的文档,我也未能找到允许您直接检查该设置的文档。
根据之前的经验,Apple 可能无法让您直接检查该设置。
那么...这里有一些代码可以让我们开始吗?
public enum InternetStatus {
case notReachable
case reachableViaWWAN
case reachableViaWiFi
case wifiAssist
}
您可以在您选择的扩展中定义一个变量。 (或许URLSession
?)
static public var internetStatus: InternetStatus {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
SCNetworkReachabilityCreateWithAddress(nil, $0)
}
}) else {
return .notReachable
}
var flags: SCNetworkReachabilityFlags = []
if flags.contains(.connectionOnDemand) {
print("Connection On Demand")
}
if flags.contains(.connectionAutomatic) {
print("Connection Automatic")
}
if flags.contains(.connectionOnTraffic) {
print("Connection On Traffic")
}
if flags.contains(.connectionRequired) {
print("Connection Required")
}
if flags.contains(.interventionRequired) {
print("Intervention Required")
}
if flags.contains(.isDirect) {
print("isDirect")
}
if flags.contains(.isLocalAddress) {
print("Local Address")
}
if flags.contains(.isWWAN) {
print("WWAN")
}
if flags.contains(.reachable) {
print("Reachable")
}
if flags.contains(.transientConnection) {
print("Transient Connection")
}
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return .notReachable
}
if flags.contains(.reachable) == false {
// The target host is not reachable.
return .notReachable
}
else if flags.contains(.isWWAN) == true {
// WWAN connections are OK if the calling application is using the CFNetwork APIs.
return .reachableViaWWAN
}
else if flags.contains(.connectionRequired) == false {
// If the target host is reachable and no connection is required then we'll assume that you're on Wi-Fi...
return .reachableViaWiFi
}else if flags.contains(.connectionRequired) && flags.contains(.isWWAN) {
// Not sure here, maybe Wi-Fi assist is currently being utilized? Will need to test.
return .wifiAssist
}else if (flags.contains(.connectionOnDemand) == true || flags.contains(.connectionOnTraffic) == true) && flags.contains(.interventionRequired) == false {
// The connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs and no [user] intervention is needed
return .reachableViaWiFi
}
else {
return .notReachable
}
}
诀窍是在您知道 Wi-Fi 辅助处于活动状态的设置中进行调试并观察标志。或者比我聪明,知道它们是什么。如果有人指出,或者我找出正确的标志组合,我会更新这个答案。
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