/*

 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