macos - 我们如何在IOS项目中以编程方式获取网络服务订单

Question

我的代码是我尝试使用 SCNetworkSetGetServiceOrder 来获取网络服务订单。像下面这样

Ethernet
FireWire
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge

我正在使用下面的代码

    -(void)getserviceorder
    {
           CFArrayRef          interfaces;
            CFIndex            interfaceCount;
            CFIndex            interfaceIndex;
            CFMutableArrayRef  result;
            CFArrayRef *portArray;
            portArray = NULL;
            result = NULL;
            interfaces = NULL;
                if (SCNetworkInterfaceCopyAll != NULL) {
                interfaces = SCNetworkInterfaceCopyAll();
                interfaceCount = CFArrayGetCount(interfaces);

            for (interfaceIndex = 0; interfaceIndex < interfaceCount;
                 interfaceIndex++) {
                SCNetworkInterfaceRef  thisInterface;
                SCNetworkSetRef set =         CFArrayGetValueAtIndex(interfaces,interfaceIndex);
                assert(thisInterface != NULL);

               NSLog(@"SCNetworkSetGetServiceOrder is %@",SCNetworkSetGetServiceOrder(set));

            }
                CFRelease(interfaces);
}

但它总是返回 null。这是正确的方法还是我如何使用 SCNetworkSetGetServiceOrder 方法来获取服务订单。 (SCNetworkSetRef set) 的值应该是多少，它是 SCNetworkSetGetServiceOrder 方法的参数。我在哪里可以了解更多相关信息

Answer 1

例如，像这样(在 Swift 中):

import SystemConfiguration

let scpref = SCPreferencesCreate(kCFAllocatorDefault, "iflist" as CFString, nil)

let netset = SCNetworkSetCopyCurrent(scpref!)
let netservs = SCNetworkSetGetServiceOrder(netset!)! as NSArray

for id in netservs {
    print("id \(id)")
    let serv = SCNetworkServiceCopy(scpref!, id as! CFString)!
    if SCNetworkServiceGetEnabled(serv) {
        if let interface = SCNetworkServiceGetInterface(serv) {
            let serviceName = SCNetworkServiceGetName(serv)
            print(serviceName as! String)
        }
    }
}