www.pudn.com > NetTest2nd.rar > socketsreader.h

/* Copyright (c) 2001, Nokia. All rights reserved */ 
 
#ifndef __SOCKETSREADER_H__ 
#define __SOCKETSREADER_H__ 
 
#include  
 
class MEngineNotifier; 
 
/*!  
  @class CSocketsReader 
   
  @discussion This class handles reading data from the socket. 
  In this implementation, any data read is simply displayed as text on the console. 
  */ 
class CSocketsReader : public CActive 
    { 
public: 
/*! 
  @function NewL 
    
  @discussion Create a CSocketsReader object 
  @param aEngineNotifier An observer for status reporting 
  @param aSocket socket to read from 
  @result a pointer to the created instance of CSocketsReader 
  */ 
	static CSocketsReader* NewL(MEngineNotifier& aEngineNotifier, RSocket& aSocket); 
 
/*! 
  @function NewLC 
    
  @discussion Create a CSocketsReader object 
  @param aEngineNotifier An observer for status reporting 
  @param aSocket socket to read from 
  @result a pointer to the created instance of CSocketsReader 
  */ 
    static CSocketsReader* NewLC(MEngineNotifier& aEngineNotifier, RSocket& aSocket); 
 
/*! 
  @function ~CSocketsReader 
   
  @discussion Destroy the object and release all memory objects 
  */ 
	~CSocketsReader(); 
 
/*! 
  @function Start 
 
  @discussion Initiate a read from socket 
  */ 
	void Start(); 
 
protected: // from CActive 
/*! 
  @function DoCancel 
    
  @discussion cancel any outstanding operation 
  */ 
	void DoCancel(); 
 
/*! 
  @function RunL 
    
  @discussion called when operation complete 
  */ 
	void RunL();	 
 
private: 
/*! 
  @function CSocketsReader 
   
  @discussion Perform the first phase of two phase construction  
  @param aEngineNotifier An observer for status reporting 
  @param aSocket socket to read from 
  */ 
	CSocketsReader(MEngineNotifier& aEngineNotifier, RSocket& aSocket); 
 
/*! 
  @function ConstructL 
   
  @discussion Perform the second phase construction of a CSocketsReader  
  */ 
	void ConstructL(); 
 
/*! 
  @function IssueRead 
 
  @discussion Initiate a read from socket 
  */ 
	void IssueRead(); 
 
private: // Member variables 
 
    /*! @const The size of the read buffer in bytes */ 
    enum {KReadBufferSize = 2048}; 
 
    /*! @var socket to read data from */ 
    RSocket&                iSocket; 
 
    /*! @var An observer for status reporting */ 
	MEngineNotifier&        iEngineNotifier; 
 
    /*! @var buffer for receiving data */ 
	TBuf8  iBuffer; 
 
    /*! @var dummy - length of data read is written here */ 
    TSockXfrLength          iDummyLength; 
    }; 
 
#endif // __SOCKETSREADER_H__