iOS中如何獲取當前網路及其本地IP（Swift）
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//獲取當前網路
func getUsedSSID() -> String {let interfaces = CNCopySupportedInterfaces()
var ssid = ""
if interfaces != nil {
let interfacesArray = CFBridgingRetain(interfaces) as! Array<AnyObject>
if interfacesArray.count > 0 {
let interfaceName = interfacesArray[0] as! CFString
let ussafeInterfaceData = CNCopyCurrentNetworkInfo
if (ussafeInterfaceData != nil) {
let interfaceData = ussafeInterfaceData as! Dictionary<String, Any>
ssid = interfaceData["SSID"]! as! String
}
}
}
return ssid
}
//獲取本機ip
func getLocalIPAddressForCurrentWiFi() -> String? {
var address: String?
// get list of all interfaces on the local machine
var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil
guard getifaddrs(&ifaddr) == 0 else {
return nil
}
guard let firstAddr = ifaddr else {
return nil
}
for ifptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) {
let interface = ifptr.pointee
// Check for IPV4 or IPV6 interface
let addrFamily = interface.ifa_addr.pointee.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
// Check interface name
let name = String(cString: interface.ifa_name)
if name == "en0" {
// Convert interface address to a human readable string
var addr = interface.ifa_addr.pointee
var hostName = [CChar](repeating: 0, count: Int(NI_MAXHOST))
getnameinfo(&addr,
socklen_t(interface.ifa_addr.pointee.sa_len),
&hostName, socklen_t(hostName.count), nil, socklen_t(0), NI_NUMERICHOST)
address = String(cString: hostName)
}
}
}
freeifaddrs(ifaddr)
return address
}
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