clienthttp.h

支持CMWAP 的HTTP socket封装类。

/*******************************************************************************
* (C) Copyright 2008 Giant Electronics LTD 
* 
* These computer program listings and specifications are the property of Giant 
* Electronics LTD and shall not be reproduced or copied or used in whole or in 
* part without written permission from Giant Electronics LTD .
*
* Project:      IViewer 
* File Name:	ClientHTTP.h
* Programer(s):	Ben Zhan
* Created:      20080729 
* Description:	interface of encapsulating HTTP protocol
* This class encapsulates HTTP protocol and provides the functionality to request 
  and read files on an HTTP server.
*******************************************************************************/


#if !defined(AFX_CLIENTHTTP_H__BDF77B47_0251_4613_BE79_7DADC95775B4__INCLUDED_)
#define AFX_CLIENTHTTP_H__BDF77B47_0251_4613_BE79_7DADC95775B4__INCLUDED_

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

#include "ClientSocket.h"

#define E_HTTP_CONNECT_FAILED			 0x15
#define E_HTTP_REQUEST_FAILED			 0x16
#define E_HTTP_RECEIVEHEADER_FAILED		 0x17
#define E_HTTP_RECEIVEBODY_FAILED		 0x18
#define E_HTTP_SUCCEED					 0x19
#define E_HTTP_OTHERERROR				 0x20
#define HTTPHEADER_MAX_SIZE				 2048

class CClientHTTP : public CClientSocket  
{
public:
	CClientHTTP();
	virtual ~CClientHTTP();	

	// Send request by GET method
	int		SendGETRequest(LPCSTR lpszURL,HANDLE hCancelEvent = NULL);

	// Send request by POST method
	int     SendPOSTRequest(LPCSTR lpszURL, LPBYTE lpPost, DWORD dwPostLength, HANDLE hCancelEvent = NULL);

	// Receive HTTP header data
	int		ReceiveResponseHeader(HANDLE hCancelEvent=NULL);

	// Get HTTP status code, 400-500 means error
	int		GetResponseStatus(DWORD &dwStatusCode);

	int		GetField(LPCSTR lpszSession, LPSTR lpszValue,LPSTR lpszHeader=NULL);	//返回某个域值,-1表示不成功
		

	BYTE*	GetResponseHeader();		//取得返回的信息头

private:
	BOOL	ValidHostChar(TCHAR   ch) ; 
	void	ParseURL(LPCSTR   lpszURL,LPSTR   lpszProtocol,int   lprotocol,LPSTR   lpHost,int   iHost,LPSTR   lpRequest,int   iRequest,int  * piPort);
	int		SendHTTP(LPCSTR   lpszURL,LPCSTR  lpszHeaderReceive,BYTE * post,DWORD   dwPostLength,HANDLE hCancelEvent);
	LPCSTR	FormatGETHeader(LPSTR lpszServer,LPSTR lpszObject,long &lLength,
						LPSTR lpszCookie=NULL,LPSTR lpszReferer=NULL,
						long lFrom=0,long lTo=0,
						int nServerType=0);									//格式化请求头
	LPCSTR	FormatGETHeader_HTTPPROXY(LPSTR lpszServer,LPSTR lpszObject,long &lLength,
		LPSTR lpszCookie=NULL,LPSTR lpszReferer=NULL,
		long lFrom=0,long lTo=0,
						int nServerType=0);									//格式化请求头

	// modified by Ben 2009-05-14
	LPCSTR  FormatPOSTHeader(LPSTR lpszServer, LPSTR lpszObject, long lPostDataLength, long &lLength);

	LPCSTR  FormatPOSTHeader_HTTPPROXY(LPSTR lpszServer, LPSTR lpszObject, long lPostDataLength, long &lLength);
	

public:
	DWORD	GetMSizeFromW(LPWSTR lpwszStr);
	DWORD	GetWSizeFromM(LPCSTR lpcszStr);
	BOOL	MByteToWChar(LPCSTR lpcszStr, LPWSTR lpwszStr, DWORD dwSize);
	BOOL	WCharToMByte(LPCWSTR lpcwszStr, LPSTR lpszStr, DWORD dwSize);
private:
	CHAR		m_ResponeHeaderBuf[HTTPHEADER_MAX_SIZE];
	CHAR		m_RequestHeaderBuf[HTTPHEADER_MAX_SIZE];
};

#endif // !defined(AFX_CLIENTHTTP_H__BDF77B47_0251_4613_BE79_7DADC95775B4__INCLUDED_)