--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tcpiputils/dnd/inc/demon.h	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,81 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// demon.h - API between main (ui) and engine for daemons
+//
+
+#ifndef __DEMON_H
+#define __DEMON_H
+
+#include <e32base.h>
+/**
+@file demon.h
+DNS main
+@internalComponent	Domain Name Resolver
+*/
+
+/**
+// Services offered by the appication main to the engine.
+//
+// A bare bones API definition which allows to write
+// the DND <b>engine</b> part without a need to make two versions
+// if daemon application is with, or without the user interface.
+*/
+class MDemonMain
+	{
+public:
+	/**
+	// Write message to the log device.
+	//
+	// @param aText	to be written
+	*/
+	virtual void Write(const TDesC &aText) = 0;
+	/*
+	// Write message with format to the log device
+	//
+	// @param aFmt	the format string to be applied
+	// @param aList	the parameters to the format string
+	*/
+	virtual void WriteList(const TDesC &aFmt, VA_LIST aList) = 0;
+	/**
+	// Write message, if error
+	//
+	// Just a convenience method to make it easy to write code
+	// which is "mostly silent" until exceptional situations
+	// occur.
+	//
+	// @param aText	to be written, if aResult != KErrNone
+	// @param aResult	is the result code to be tested
+	//
+	// @return	aResult (always)
+	*/
+	TInt virtual CheckResult(const TDesC &aText, TInt aResult) = 0;
+	};
+
+/**
+// Services offered by the engine to the application main.
+*/
+class MDemonEngine
+	{
+public:
+	// Allow delete via M-class pointer
+	virtual ~MDemonEngine() {}
+	// Allow ConstructL via M-class pointer
+	virtual void ConstructL() = 0;
+	// Handle commands from the user
+	virtual void HandleCommandL(TInt aCommand) = 0;
+	// Create the real engine instance [there can be only one]
+	static MDemonEngine *NewL(MDemonMain &aMain);
+	};
+
+#endif