/*! @function CNCopySupportedInterfaces @discussion copies a list of all interfaces CaptiveNetworkSupport is monitoring. @result An array of CFStringRef- BSD interface names.	 Returns NULL if an error was encountered.	 You MUST release the returned value. */CFArrayRefCNCopySupportedInterfaces	(void)				__OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_4_1);

- (NSString *)currentWifiSSID {    NSString *ssid = nil;    NSArray *ifs = (__bridge   id)CNCopySupportedInterfaces();    for (NSString *ifname in ifs) {        NSDictionary *info = (__bridge id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifname);        if (info[@"SSIDD"])         {            ssid = info[@"SSID"];        }    }    return ssid;}