//

//  MYBonjourService.h

//  MYNetwork

//

//  Created by Jens Alfke on 1/22/08.

//  Copyright 2008 Jens Alfke. All rights reserved.

//

#import <Foundation/Foundation.h>

#import "ConcurrentOperation.h"

@class MYBonjourResolveOperation;

/** Represents a Bonjour service discovered by a BonjourBrowser. */

@interface MYBonjourService : NSObject 

{

    @private

    NSNetService *_netService;

    NSDictionary *_txtRecord;

    NSSet *_addresses;

    CFAbsoluteTime _addressesExpireAt;

    MYBonjourResolveOperation *_resolveOp;

}

/** The service's name. */

@property (readonly) NSString *name;

/** The service's metadata dictionary, from its DNS TXT record */

@property (readonly,copy) NSDictionary *txtRecord;

/** A convenience to access a single property from the TXT record. */

- (NSString*) txtStringForKey: (NSString*)key;

/** Returns a set of IPAddress objects; may be the empty set if address resolution failed,

    or nil if addresses have not been resolved yet (or expired).

    In the latter case, call -resolve and wait for the returned Operation to finish. */

@property (readonly,copy) NSSet* addresses;

/** Starts looking up the IP address(es) of this service.

    @return  The NSOperation representing the lookup; you can observe this to see when it

        completes, or you can observe the service's 'addresses' property. */

- (MYBonjourResolveOperation*) resolve;

/** The underlying NSNetSerice object. */

@property (readonly) NSNetService *netService;

// Protected methods, for subclass use only:

- (id) initWithNetService: (NSNetService*)netService;

// (for subclasses to override, but not call):

- (void) added;

- (void) removed;

- (void) txtRecordChanged;

@end

@interface MYBonjourResolveOperation : ConcurrentOperation

{

    MYBonjourService *_service;

    NSSet *_addresses;

}

@property (readonly) MYBonjourService *service;

@property (readonly,retain) NSSet *addresses;

@end