diff -r 000000000000 -r 3553901f7fa8 smsprotocols/smsstack/smsu/inc/smsustrm.inl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smsprotocols/smsstack/smsu/inc/smsustrm.inl	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,39 @@
+// Copyright (c) 1999-2009 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:
+// contains the inline functions of the RSmsSocketBuf class
+// 
+//
+
+/**
+ @file
+ 
+ @return how much the socket is lagging for read
+ If positive the buffer needs to read more from the socket in order to be synchronised
+ @publishedAll
+ 
+*/
+inline TInt RSmsSocketBuf::Lag(TRead) const
+	{
+	return Ptr(ERead)-End(ERead);
+	}
+
+
+/**
+ *  @return how much the socket is lagging for write
+ *  If positive the buffer need to write more to the socket in order to be synchronised
+ */
+inline TInt RSmsSocketBuf::Lag(TWrite) const
+	{
+	return Ptr(EWrite)-iBuffer;
+	}