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OpenURL sample

This sample function allows to copy a file from any location (remote or not) to local file. For url parameter valid values are
http://visualcpp.net/text.txt,
C:\test.doc,
ftp://user:password@ftp.any.com/folder/file.ext etc.

// #include "afxinet.h"

BOOL getURLFile(const char *url, const char *filename, CString &errorMessage) {
	const int FILEBUFLEN = 1024;
	char httpBuff[FILEBUFLEN];
	TCHAR szCause[255];
	errorMessage = "OK";

	TRY {
		CInternetSession session;
		session.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 1000);
		session.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 3);
		CFile *remoteFile = session.OpenURL(url, 1 , 
			INTERNET_FLAG_TRANSFER_BINARY | INTERNET_FLAG_RELOAD);
		CFile localFile(filename, CFile::modeCreate | 
			CFile::modeWrite | 
			CFile::typeBinary);
		int numBytes;
		while (numBytes = remoteFile->Read(httpBuff, FILEBUFLEN)) {
			localFile.Write(httpBuff, numBytes);
		}
	}
	CATCH_ALL(error) {
		error->GetErrorMessage(szCause,254,NULL);
		errorMessage.Format("%s",szCause);
		return FALSE;
	}
	END_CATCH_ALL;
	return TRUE;
}

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