Reachability.h

/*
 
 File: Reachability.h
 Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
 
 Version: 2.2
 
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*/
 
#import <Foundation/Foundation.h>
#import <SystemConfiguration/SystemConfiguration.h>
#import <netinet/in.h>
 
typedef enum
{
  NotReachable = 0,
  ReachableViaWiFi = 1,
  ReachableViaWWAN = 2
} NetworkStatus;
#define kReachabilityChangedNotification @"kNetworkReachabilityChangedNotification"
 
@interface Reachability : NSObject
{
  BOOL localWiFiRef;
  SCNetworkReachabilityRef reachabilityRef;
}
 
// reachabilityWithHostName- Use to check the reachability of a particular host name.
+ (Reachability *)reachabilityWithHostName:(NSString *)hostName;
 
// reachabilityWithAddress- Use to check the reachability of a particular IP address.
+ (Reachability *)reachabilityWithAddress:(const struct sockaddr_in *)hostAddress;
 
// reachabilityForInternetConnection- checks whether the default route is available.
//  Should be used by applications that do not connect to a particular host
+ (Reachability *)reachabilityForInternetConnection;
 
// reachabilityForLocalWiFi- checks whether a local wifi connection is available.
+ (Reachability *)reachabilityForLocalWiFi;
 
// Start listening for reachability notifications on the current run loop
- (BOOL)startNotifier;
- (void)stopNotifier;
 
- (NetworkStatus)currentReachabilityStatus;
// WWAN may be available, but not active until a connection has been established.
// WiFi may require a connection for VPN on Demand.
- (BOOL)connectionRequired;
@end