/*

    File:       RemoteCurrencyClientConnection.h

    Contains:   Manages the client side of a client-server connection.

    Written by: DTS

    Copyright:  Copyright (c) 2011 Apple Inc. All Rights Reserved.

    Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.

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                The Apple Software is provided by Apple on an "AS IS" basis. 

                APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

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*/

#import "QCommandLineConnection.h"

@protocol RemoteCurrencyClientConnectionDelegate;

@interface RemoteCurrencyClientConnection : QCommandLineConnection

// Most of the heavy lifting is done by the QCommandLineConnection superclass.  The 

// following inherited methods are critical to all clients:

// 

// - (id)initWithInputStream:(NSInputStream *)inputStream outputStream:(NSOutputStream *)outputStream;

// - (void)open;

// - (void)close;

@property (nonatomic, assign, readwrite) id<RemoteCurrencyClientConnectionDelegate> clientDelegate;

- (void)sendRequest:(NSString *)request;

    // Sends a request to the server, adding the CR LF.

@end

@protocol RemoteCurrencyClientConnectionDelegate <NSObject>

@required

- (void)remoteCurrencyClientConnection:(RemoteCurrencyClientConnection *)connection willCloseWithError:(NSError *)error;

    // Called when the connection is closed from the network side of things (but not 

    // if you call -close on it).  You should implement this method to remove the connection 

    // from your table of active connections.

    //

    // error will be nil if the connection closed due to EOF; otherwise 

    // error will represent the reason for the close.

// IMPORTANT: Commands are always processed in order, so this response is implicitly the response 

// to the oldest unresponded to request (where a request is considered responded to by either 

// didReceiveResponse or didReceiveError).

- (void)remoteCurrencyClientConnection:(RemoteCurrencyClientConnection *)connection didReceiveResponse:(NSString *)response lines:(NSArray *)lines;

    // Called when the server receives a response for a request.  response is the actual response 

    // text, which does not include the "+ " prefix.  lines contains the data lines associated with 

    // the response; it will never be nil but may be empty.

- (void)remoteCurrencyClientConnection:(RemoteCurrencyClientConnection *)connection didReceiveError:(NSString *)errorResponse;

    // Called when the server receives an error response for a request.  errorResponse is the actual 

    // text, which does not include the "- " prefix.

- (void)remoteCurrencyClientConnection:(RemoteCurrencyClientConnection *)connection logWithFormat:(NSString *)format arguments:(va_list)argList;

    // Called when the connection wants to log something.

@end