httpdown.h

本程序是VC为平台开发的股票资讯系统

#if !defined(AFX_HTTPDOWN_H__39530BC0_6DE1_11D4_B458_00104B1269BD__INCLUDED_)
#define AFX_HTTPDOWN_H__39530BC0_6DE1_11D4_B458_00104B1269BD__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// HttpDown.h : header file
//
#include <afxinet.h>

#define WM_USER_SERVER_STATUS (WM_USER + 10)
#define WM_USER_SEND_ERRINFO (WM_USER + 12)
#define ERROR_INIT_SERVER	10
#define ERROR_URL_NULL		11
#define ERROR_NEW_PARAMS	12
#define ERROR_PARSE_URL		13
#define ERROR_GET_HTTPFILE	14

/////////////////////////////////////////////////////////////////////////////
// CHttpDown window

typedef struct tagURLParams
{
	CString m_pszURL;
	DWORD	m_dwServiceType;
	DWORD	m_dwContext;
	CString m_Contents;
	CString m_strServerName;
	CString m_strObject;
	INTERNET_PORT  m_nPort;
	CString m_strProxy;
	CString m_strPort;
	DWORD	m_dwTimeOut;
	DWORD	m_dwIngoreLength;
}URLParams; 

class CSearchSession : public CInternetSession
{
public:
	CSearchSession(LPCTSTR pstrAgent = NULL, 
		DWORD dwContext = 1000, 
		DWORD dwAccessType = INTERNET_OPEN_TYPE_PRECONFIG, 
		LPCTSTR pstrProxyName = NULL, 
		LPCTSTR pstrProxyBypass = NULL, DWORD dwFlags = 0 ) 
		: CInternetSession(pstrAgent, dwContext, dwAccessType,
		pstrProxyName, pstrProxyBypass, dwFlags) 
		{ 	
			m_pWnd = NULL;	
		};

// Attributes
public:
	HWND m_pWnd;  // pointer to window
//	CString m_strHttpSite;  // current URL 
// Operations
public:
	virtual void OnStatusCallback(DWORD dwContext, 
		DWORD dwInternetStatus,LPVOID lpvStatusInfomration, 
		DWORD dwStatusInformationLen);

};

class CHttpDown 
{
// Construction
public:
	CHttpDown();
	~CHttpDown();

protected:
	CSearchSession *m_pSession;
	CHttpConnection *m_pServer;
	CHttpFile *m_pFile;
	CString m_strCurrentServer;

	DWORD dwError;

	BOOL InitServer(URLParams *pURLParams);
	DWORD NewConnection(LPCTSTR ServerName,LPCTSTR strObject,URLParams *pURLParams);
	BOOL ParseURL(URLParams *pURLParams);
	DWORD GetHttpStatus(LPCTSTR lpServerName,LPCTSTR strObject,URLParams *pURLParams);
	BOOL GetHttpFile(LPCTSTR ServerName,LPCTSTR strObject,URLParams *pURLParams);
	BOOL CleanUp();

public:
	CString GetLastErrorText();
	CString GetHttpFileGet(LPCTSTR pstrURL,DWORD dwContext = 1000,
		DWORD dwTimeOut = 0,LPCTSTR pstrProxy = NULL,
		LPCTSTR pstrPort = NULL,DWORD dwIngoreLength = -1);
};

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

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

#endif // !defined(AFX_HTTPDOWN_H__39530BC0_6DE1_11D4_B458_00104B1269BD__INCLUDED_)