我是这个发展的新手。我在互联网上搜索了很多,但无法找到适当的解决方案。我想检查我的iPhone应用程序中可用的VPN连接,因为我从通过VPN连接的客户端计算机获取数据。我确实检查了Internet连接是否可用但无法检查VPN是否已连接。请建议我这个。
如果你想ping功能,你可以做这样的事情;
它对我有用
我刚刚找到另一种检查VPN连接的方法,这在任何地方都没有提到。您可以使用getifaddrs()来获取当前的网络接口。然后迭代它们并检查它们的名字。如果其中任何一个包含tap,tun或ppp,则用户已连接VPN。
- (BOOL)isVPNConnected
{
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
// retrieve the current interfaces - returns 0 on success
success = getifaddrs(&interfaces);
if (success == 0) {
// Loop through linked list of interfaces
temp_addr = interfaces;
while (temp_addr != NULL) {
NSString *string = [NSString stringWithFormat:@"%s" , temp_addr->ifa_name];
if ([string rangeOfString:@"tap"].location != NSNotFound ||
[string rangeOfString:@"tun"].location != NSNotFound ||
[string rangeOfString:@"ppp"].location != NSNotFound){
return YES;
}
temp_addr = temp_addr->ifa_next;
}
}
// Free memory
freeifaddrs(interfaces);
return NO;
}
UPD:在iOS 9上面的代码不起作用。无论VPN是否连接,接口都是相同的。在这种情况下尝试以下代码:
- (BOOL)isVPNConnected
{
NSDictionary *dict = CFBridgingRelease(CFNetworkCopySystemProxySettings());
NSArray *keys = [dict[@"__SCOPED__"]allKeys];
for (NSString *key in keys) {
if ([key rangeOfString:@"tap"].location != NSNotFound ||
[key rangeOfString:@"tun"].location != NSNotFound ||
[key rangeOfString:@"ppp"].location != NSNotFound){
return YES;
}
}
return NO;
}
要修复在iOS 11上测试的Timur Suleimanov答案,您需要寻找IPSec接口;
- (BOOL)isVPNConnected {
NSDictionary *dict = CFBridgingRelease(CFNetworkCopySystemProxySettings());
NSArray *keys = [dict[@"__SCOPED__"]allKeys];
for (NSString *key in keys) {
if ([key rangeOfString:@"tap"].location != NSNotFound ||
[key rangeOfString:@"tun"].location != NSNotFound ||
[key rangeOfString:@"ipsec"].location != NSNotFound ||
[key rangeOfString:@"ppp"].location != NSNotFound){
return YES;;
}
}
return NO;
}
这是Swift版本的代码
var isVPNConnectd : Bool {
get {
if let dict = CFNetworkCopySystemProxySettings()?.takeRetainedValue() as? Dictionary<String, AnyObject>,
let keys = (dict["__SCOPED__"] as? [String : AnyObject])?.keys {
for key in keys {
if key.range(of: "tap") != nil ||
key.range(of: "tun") != nil ||
key.range(of: "ipsec") != nil ||
key.range(of: "ppp") != nil {
return true
}
}
return false
}
else {
return false
}
}
}
如果可以连接VPN,则Ping或查找只应在VPN上可用的地址正在使用中。