isession.h

MudMaster 2000 的C++源码

/************************************************************************************
	Copyright (c) 2000 Aaron O'Neil
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:

		1) Redistributions of source code must retain the above copyright notice, 
				this list of conditions and the following disclaimer.
		2) Redistributions in binary form must reproduce the above copyright notice, 
				this list of conditions and the following disclaimer in the documentation
				and/or other materials provided with the distribution.
		3) Redistributions in binary form must reproduce the above copyright notice on
				program startup. Additional credits for program modification are acceptable
				but original copyright and credits must be visible at startup.
		4) You may charge a reasonable copying fee for any distribution of Mud Master. 
				You may charge any fee you choose for support of Mud Master. You may not 
				charge a fee for Mud Master itself.

  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

**************************************************************************************/

class CISession : public CInternetSession
{
public:
	CISession();
	~CISession();

	virtual void OnStatusCallback(DWORD dwContext, DWORD dwInternetStatus, 
		LPVOID lpvStatusInformation, DWORD dwStatusInformationLength);

	// Status up the Async stuff.  Just runs by itself after this.
	BOOL DoIt();

	// Closes the internet handles and frees up objects.
	void Stop();
	
	DWORD GetLastStatus()			{return(m_dwStatus);}

private:
	DWORD m_dwStatus;

	// This is not set until a INTERNET_STATUS_COMPLETE is received.  This is
	// the error code for that callback result only.  ERROR_SUCCESS means it
	// all went swell.
	DWORD m_dwError;

	CString m_strServerName;
	CString m_strObject;
	INTERNET_PORT m_nPort;
	DWORD m_dwServiceType;
	DWORD m_dwVerRet;
	DWORD m_dwVerTime;
	CHttpConnection *m_pHttpServer;
	CHttpFile *m_pHttpFile;

	// This is the number of times it's tried to read the http file and failed
	// with an exception.  Used to prevent it from doing it over and over 
	// continuously if there is a problem.
	int m_nRetries;

	// Called once we have the document.  Parses it and deals with the checking
	// of versions.
	void ProcessVersionFile();
	UINT WeightVersion(int nVerMajor, int nVerMinor, int nVerBuild, int nVerBeta);
	void SplitVersion(CString &strData, CString &strVersion, UINT &nWeight);
};