Classes/Connection.h

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//
//  Connection.h
//  DistributedCalendar
//
//  Created by Jagdish on 8/5/10.
//  Copyright 2010 __MyCompanyName__. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <CFNetwork/CFSocketStream.h>
#import "ConnectionDelegate.h"

@class Request;

@interface Connection : NSObject {

        id<ConnectionDelegate> delegate;
        
        // Connection info: host address and port
        NSString* host;
        int port;
        
        // Connection info: native socket handle
        CFSocketNativeHandle connectedSocketHandle;
        
        // Connection info: NSNetService
        NSNetService* netService;
        
        // Read stream
        CFReadStreamRef readStream;
        bool readStreamOpen;
        NSMutableData* incomingDataBuffer;
        int packetBodySize;
        
        // Write stream
        CFWriteStreamRef writeStream;
        bool writeStreamOpen;
        NSMutableData* outgoingDataBuffer;
        
        // Booleans
        BOOL resolved;
}

@property (nonatomic, retain) id<ConnectionDelegate> delegate;

@property (nonatomic) BOOL resolved;

// Initialize and store connection information until 'connect' is called
- (id)initWithHostAddress:(NSString*)host andPort:(int)port;

// Initialize using a native socket handle, assuming connection is open
- (id)initWithNativeSocketHandle:(CFSocketNativeHandle)nativeSocketHandle;

// Initialize using an instance of NSNetService
- (id)initWithNetService:(NSNetService*)netService;

// Connect using whatever connection info that was passed during initialization
- (BOOL)connect;

// Close connection
- (void)close;

// Send network message
- (void)sendNetworkPacket:(NSDictionary*)packet;


// gethost and getport for testing purpose only
- (NSString*)getHost;
- (NSInteger)getPort;

@end