void cleanup() 
	{
			if ( pElemProp != NULL )
			{
				pElemProp->Release();
				pElemProp = NULL;
			}
			if ( pElemProps != NULL )
			{
				pElemProps->Release(); 
				pElemProps = NULL;
			}
			if ( pElem != NULL )
			{
				pElem->Release();
				pElem = NULL;
			}
			if ( pElemColl != NULL )
			{
				pElemColl->Release(); 
				pElemColl = NULL;
			}
			if ( pParentElem != NULL )
			{
				pParentElem->Release(); 
				pParentElem = NULL;
			}
			if ( pMgr != NULL )
			{
				pMgr->Release(); 
				pMgr = NULL;
			}

			SysFreeString( bstrConfigCommitPath );
			SysFreeString( bstrSectionName );
			SysFreeString( bstrPropertyName );

			CoUninitialize();
	}
HRESULT CModuleConfiguration::CreateNodeEnvironment(IHttpContext* ctx, DWORD debugPort, PCH namedPipe, PCH* env)
{
	HRESULT hr;
	LPCH currentEnvironment = NULL;
	LPCH tmpStart, tmpIndex = NULL;
	DWORD tmpSize;
	DWORD environmentSize;
	IAppHostElement* section = NULL;
	IAppHostElementCollection* appSettings = NULL;
	IAppHostElement* entry = NULL;
	IAppHostPropertyCollection* properties = NULL;
	IAppHostProperty* prop = NULL;
	BSTR keyPropertyName = NULL;
	BSTR valuePropertyName = NULL;
	VARIANT vKeyPropertyName;
	VARIANT vValuePropertyName;
	DWORD count;
	BSTR propertyValue;
	int propertySize;

	CheckNull(env);
	*env = NULL;

	// this is a zero terminated list of zero terminated strings of the form <var>=<value>

	// calculate size of current environment

	ErrorIf(NULL == (currentEnvironment = GetEnvironmentStrings()), GetLastError());
	environmentSize = 0;
	do {
		while (*(currentEnvironment + environmentSize++) != 0);
	} while (*(currentEnvironment + environmentSize++) != 0);

	// allocate memory for new environment variables

	tmpSize = 32767 - environmentSize;
	ErrorIf(NULL == (tmpIndex = tmpStart = new char[tmpSize]), ERROR_NOT_ENOUGH_MEMORY);
	RtlZeroMemory(tmpIndex, tmpSize);

	// set PORT and IISNODE_VERSION variables

	ErrorIf(tmpSize < (strlen(namedPipe) + strlen(IISNODE_VERSION) + 6 + 17), ERROR_NOT_ENOUGH_MEMORY);
	sprintf(tmpIndex, "PORT=%s", namedPipe);
	tmpIndex += strlen(namedPipe) + 6;
	sprintf(tmpIndex, "IISNODE_VERSION=%s", IISNODE_VERSION);
	tmpIndex += strlen(IISNODE_VERSION) + 17;

	// set DEBUGPORT environment variable if requested (used by node-inspector)

	if (debugPort > 0)
	{
		char debugPortS[64];
		sprintf(debugPortS, "%d", debugPort);
		ErrorIf((tmpSize - (tmpIndex - tmpStart)) < (strlen(debugPortS) + 11), ERROR_NOT_ENOUGH_MEMORY);
		sprintf(tmpIndex, "DEBUGPORT=%s", debugPortS);
		tmpIndex += strlen(debugPortS) + 11;
	}
		
	// add environment variables from the appSettings section of config

	ErrorIf(NULL == (keyPropertyName = SysAllocString(L"key")), ERROR_NOT_ENOUGH_MEMORY);
	vKeyPropertyName.vt = VT_BSTR;
	vKeyPropertyName.bstrVal = keyPropertyName;
	ErrorIf(NULL == (valuePropertyName = SysAllocString(L"value")), ERROR_NOT_ENOUGH_MEMORY);
	vValuePropertyName.vt = VT_BSTR;
	vValuePropertyName.bstrVal = valuePropertyName;
	CheckError(GetConfigSection(ctx, &section, L"appSettings"));
	CheckError(section->get_Collection(&appSettings));
	CheckError(appSettings->get_Count(&count));

	for (USHORT i = 0; i < count; i++)
	{
		VARIANT index;
		index.vt = VT_I2;
		index.iVal = i;		

		CheckError(appSettings->get_Item(index, &entry));
		CheckError(entry->get_Properties(&properties));
		
		CheckError(properties->get_Item(vKeyPropertyName, &prop));
		CheckError(prop->get_StringValue(&propertyValue));
		ErrorIf(0 == (propertySize = WideCharToMultiByte(CP_ACP, 0, propertyValue, wcslen(propertyValue), NULL, 0, NULL, NULL)), E_FAIL);
		ErrorIf((propertySize + 2) > (tmpSize - (tmpStart - tmpIndex)), ERROR_NOT_ENOUGH_MEMORY);
		ErrorIf(propertySize != WideCharToMultiByte(CP_ACP, 0, propertyValue, wcslen(propertyValue), tmpIndex, propertySize, NULL, NULL), E_FAIL);
		tmpIndex[propertySize] = '=';
		tmpIndex += propertySize + 1;
		SysFreeString(propertyValue);
		propertyValue = NULL;
		prop->Release();
		prop = NULL;

		CheckError(properties->get_Item(vValuePropertyName, &prop));
		CheckError(prop->get_StringValue(&propertyValue));
		ErrorIf(0 == (propertySize = WideCharToMultiByte(CP_ACP, 0, propertyValue, wcslen(propertyValue), NULL, 0, NULL, NULL)), E_FAIL);
		ErrorIf((propertySize + 1) > (tmpSize - (tmpStart - tmpIndex)), ERROR_NOT_ENOUGH_MEMORY);
		ErrorIf(propertySize != WideCharToMultiByte(CP_ACP, 0, propertyValue, wcslen(propertyValue), tmpIndex, propertySize, NULL, NULL), E_FAIL);
		tmpIndex += propertySize + 1;
		SysFreeString(propertyValue);
		propertyValue = NULL;
		prop->Release();
		prop = NULL;

		properties->Release();
		properties = NULL;
		entry->Release();
		entry = NULL;
	}

	// concatenate new environment variables with the current environment block

	ErrorIf(NULL == (*env = (LPCH)new char[environmentSize + (tmpIndex - tmpStart)]), ERROR_NOT_ENOUGH_MEMORY);	
	memcpy(*env, tmpStart, (tmpIndex - tmpStart));
	memcpy(*env + (tmpIndex - tmpStart), currentEnvironment, environmentSize);

	// cleanup

	FreeEnvironmentStrings(currentEnvironment);
	section->Release();
	appSettings->Release();
	SysFreeString(keyPropertyName);
	SysFreeString(valuePropertyName);
	delete [] tmpStart;

	return S_OK;
Error:

	if (currentEnvironment)
	{
		FreeEnvironmentStrings(currentEnvironment);
		currentEnvironment = NULL;
	}

	if (section)
	{
		section->Release();
		section = NULL;
	}

	if (appSettings)
	{
		appSettings->Release();
		appSettings = NULL;
	}

	if (keyPropertyName)
	{
		SysFreeString(keyPropertyName);
		keyPropertyName = NULL;
	}

	if (valuePropertyName)
	{
		SysFreeString(valuePropertyName);
		valuePropertyName = NULL;
	}

	if (entry)
	{
		entry->Release();
		entry = NULL;
	}

	if (properties)
	{
		properties->Release();
		properties = NULL;
	}

	if (prop)
	{
		prop->Release();
		prop = NULL;
	}

	if (propertyValue)
	{
		SysFreeString(propertyValue);
		propertyValue = NULL;
	}

	if (tmpStart)
	{
		delete [] tmpStart;
		tmpStart = NULL;
	}

	return hr;
}