How Proxy Server serves FTP clients?

// LiteProxyServer.h : main header file for the LITEPROXYSERVER application
//

#if !defined(AFX_LITEPROXYSERVER_H__534938A5_ECF1_11D7_B8FA_0008A1444501__INCLUDED_)
#define AFX_LITEPROXYSERVER_H__534938A5_ECF1_11D7_B8FA_0008A1444501__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#ifndef __AFXWIN_H__
	#error include 'stdafx.h' before including this file for PCH
#endif

#include "resource.h"       // main symbols

/////////////////////////////////////////////////////////////////////////////
// CLiteProxyServerApp:
// See LiteProxyServer.cpp for the implementation of this class
//

class CLiteProxyServerApp : public CWinApp
{
public:
	CLiteProxyServerApp();

	UINT m_uMsgCheckInst;

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CLiteProxyServerApp)
	public:
	virtual BOOL InitInstance();
	virtual BOOL PreTranslateMessage(MSG* pMsg);
	//}}AFX_VIRTUAL
	
	bool GetConnectedState(CString &str);

	int m_nInProgress;
	int m_nReceivedBytes;
	int m_nCacheBytes;
	int m_nSentBytes;

// Implementation
	//{{AFX_MSG(CLiteProxyServerApp)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

extern CLiteProxyServerApp theApp;
CString Commas(int nValue);
CString Commas(CString str);

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_LITEPROXYSERVER_H__534938A5_ECF1_11D7_B8FA_0008A1444501__INCLUDED_)