Internet Update feature for your game

I'll take a copy. I love looking at other people's source code.

- Splat

Ill take a copy too.

Id like to see the code too. If you can email me a copy at ghowland@lupinegames.com thatd be great.

-Geoff

Hey,

That sounds like a good idea, if you could please send me a copy at: servo@dtx.net

why dont you just put it up on a page somewhere so everyone can d/l it?

Josh

Yeah, copy it to a page, because I would be interested in it too
invader@hushmail.com

------------------
http://qoy.tripod.com

You want code? You got code!
To use it though, you'd need to change the directories. As i've just pasted this, I havent edited it - so it's got "voyce" all over it.
Just ignore it, its just from my voice recognition program.
Oh yeah, and make sure there's a variable hMainInstance that contains the hInstance passed to WinMain!.
It uses MFC classes, however I use it on my win32 progs too.

code:

---

//
// Internet Update Code - Voyce
//
#include "stdafx.h"			// Pre-compiled header
#include 		// WinInet
#include 			// Standard input/output
#include 			// Misc char support
#include 			// Maths
#include 		// Shell API
#include "licence.lic"		// Licence
#include "resource.h"		// Resource header
/////////
extern HINSTANCE hMainInstance;
/////////
int VoyceMessageBox(HWND hWnd, LPSTR lpszText, LPSTR lpszCaption, DWORD dwFlags)
{
	MSGBOXPARAMS mbp;
	mbp.cbSize = sizeof(mbp);
	mbp.hwndOwner=hWnd;
	mbp.hInstance=hMainInstance;
		
	mbp.lpszText = lpszText;
	mbp.lpszCaption = lpszCaption;
	mbp.dwStyle = MB_USERICON | dwFlags;
	mbp.lpszIcon = MAKEINTRESOURCE(IDI_VOYCE);
	mbp.dwContextHelpId = NULL;
	mbp.lpfnMsgBoxCallback = NULL;
	mbp.dwLanguageId = NULL;
	return MessageBoxIndirect(&mbp);
}
void DisplayHTTPCode(DWORD dwRet, LPSTR lpszCaption)
{
	char *strText;

	switch (dwRet)
	{
	case 200:
		strText = "URL located, transmission follows";
		break;
	case 400:
		strText = "Unintelligble request";
		break;
	case 404:
		strText = "Requested URL not found";
		break;
	case 405:
		strText = "Server does not support requested method";
		break;
	case 500:
		strText = "Unknown server error";
		break;
	case 503:
		strText = "Server capacity reached";
		break;
	default:
		sprintf(strText, "HTTP Code %d", dwRet);
		break;
	}
	VoyceMessageBox(0, strText, lpszCaption, MB_OK);
}
int CheckUpdate(void)
{
	CInternetSession session("Voyce Update Check");
	CHttpConnection* pServer = NULL;
	CHttpFile* pFile = NULL;
	DWORD dwRet;
	CString strBuf;
	try
	{
		CString strServerName;
		CString strHeaders;
		CString strObject;
		INTERNET_PORT nPort;
		strServerName = "members.xoom.com";
		nPort = 80;
		strObject = "/_clotweb/voyce/update.inf";
		strHeaders = "";
		pServer = session.GetHttpConnection(strServerName, nPort);
		pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_GET, strObject);
		pFile->AddRequestHeaders(strHeaders);
		pFile->SendRequest();
		pFile->QueryInfoStatusCode(dwRet);
		if (dwRet == HTTP_STATUS_OK)
		{
			// Read some bytes into the buffer
			pFile->ReadString(strBuf);
		}
		else
		{
			// Not quite OK
			if (dwRet >= 200 && dwRet <= 299)
				DisplayHTTPCode(dwRet, "Couldn't obtain update information");
		}
		delete pFile;
		delete pServer;
	}
	catch (CInternetException* pEx)
	{
		// Internet error
		pEx->Delete();
		VoyceMessageBox(NULL, "There was an error obtaining\nthe update information.", "Voyce Update", MB_OK);
		
		return 0;
	}
	session.Close();
	// Check for a higher version number
	if (strncmp(strBuf, VERSION, strlen(VERSION)) > 0)
	{
		// Higher version exists there
		if (VoyceMessageBox(0, "A new version of Voyce exists.\nDo you want to update.", "Voyce Update", MB_YESNO) == IDYES)
			return 1;	// Get it
		else
			return 0;	// Don't get it
	}
	else
	{
		VoyceMessageBox(0, "No new version of Voyce exists.", "Voyce Update", MB_OK);
		return 0;	// Nope, existing / lower version exists there
	}
}
void GetUpdate(void)
{
	CInternetSession session("Voyce Update Download");
	CFtpConnection* pConn = NULL;
	char *strTempFile;
	char *strTempPath;
	GetTempPath(1024, strTempPath);
	GetTempFileName(strTempPath, "VOY", 0, strTempFile);
	pConn = session.GetFtpConnection("ftp.xoom.com");
	// Get the file
	if (!pConn->GetFile("/members/_clotweb/voyce/update.exe", strTempFile))
	{
		// Display an error
		VoyceMessageBox(0, "An error occurred whilst trying to\ndownload the update.", "Voyce Update", MB_OK);
		return;
	}
	else
	{
		// Run downloaded temp file
		ShellExecute(0, "open", strTempFile, NULL, NULL, SW_SHOWNORMAL);
		delete pConn;
	}
	session.Close();
}

---

Hope it works