--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/Transaction/src/ResponseQueue.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2006-2009 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:
+* Name          : ResponseQueue.h
+* Part of       : Transaction
+* Version       : SIP/5.0
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+
+#ifndef RESPONSEQUEUE_H
+#define RESPONSEQUEUE_H
+
+// FORWARD DECLARATIONS
+class CResponseQueueItem;
+
+
+/**
+ * This class represents a queue for storing SIP responses in the order they
+ * are sent. Server transactions need to queue the responses because
+ * transaction can't send another response until the previous asynchronous send
+ * has been completed.
+ */
+class CResponseQueue : public CBase
+	{
+public: // Constructor and destructor
+
+	static CResponseQueue* NewL();
+
+	~CResponseQueue();
+
+public: // New functions
+
+	/**	
+	 * Adds a SIP response into the queue.
+	 *
+	 * @pre aResp != NULL
+	 *
+	 * @param aRespItem Response item which is stored to the queue, ownership is
+	 *	transferred if Add returns KErrNone
+	 * @return KErrNone If successful and the ownership of aRespItem is
+	 *	transferred. Otherwise a system wide error code and the ownership of
+	 *  aRespItem is not transferred.
+	 */
+	TInt Add(CResponseQueueItem* aRespItem);
+
+	/**
+	 * Extracts the oldest response item from the queue.
+	 *
+	 * @return value Response item, or NULL if there were no items in the queue.
+	 *	Ownership is transferred.
+	 */
+	CResponseQueueItem* GetNext();
+
+private: // Constructor, for internal use
+
+    CResponseQueue();
+
+private: // Data
+
+	//Response queue. The items are owned.
+	RPointerArray<CResponseQueueItem> iQueue;
+
+	// For testing purposes
+#ifdef CPPUNIT_TEST	
+	friend class CTransactionUser_Test;
+#endif
+	};
+
+#endif // end of RESPONSEQUEUE_H
+
+// End of File