/*

    File:       QReachabilityOperation.h

    Contains:   Runs until a host's reachability attains a certain value.

    Written by: DTS

    Copyright:  Copyright (c) 2010 Apple Inc. All Rights Reserved.

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*/

#import "QRunLoopOperation.h"

#include <SystemConfiguration/SystemConfiguration.h>

@interface QReachabilityOperation : QRunLoopOperation

{

    NSString *                      _hostName;

    NSUInteger                      _flagsTargetMask;

    NSUInteger                      _flagsTargetValue;

    NSUInteger                      _flags;

    SCNetworkReachabilityRef        _ref;

}

- (id)initWithHostName:(NSString *)hostName;

    // Initialises the operation to monitor the reachability of the specified 

    // host.  The operation finishes when (flags & flagsTargetMask) == flagsTargetValue.

// Things that are configured by the init method and can't be changed.

@property (copy,   readonly ) NSString *    hostName;

// Things you can configure before queuing the operation.

// runLoopThread and runLoopModes inherited from QRunLoopOperation

@property (assign, readwrite) NSUInteger    flagsTargetMask;

@property (assign, readwrite) NSUInteger    flagsTargetValue;

// Things that change as part of the progress of the operation.

// error property inherited from QRunLoopOperation

@property (assign, readonly ) NSUInteger    flags;              // observable, changes on the actual run loop thread

@end