--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/datacommsserver/esockserver/inc/ss_apiext_messages.h	Thu Dec 17 09:22:25 2009 +0200
@@ -0,0 +1,189 @@
+// 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:
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#if !defined(SS_APIEXT_MESSAGES_H_INCLUDED)
+#define SS_APIEXT_MESSAGES_H_INCLUDED
+
+#include <e32def.h>
+#include <comms-infras/ss_nodeinterfaces.h>
+#include <comms-infras/ss_dispatchers.h>
+#include <comms-infras/api_ext_list.h>
+#include <comms-infras/api_ext_msg.h>
+#include <elements/responsemsg.h>
+
+namespace ESock
+{
+
+const TInt KExtItfMsgImplementationUid = 0x102822F7;
+
+enum EExtItfMessageId
+	{
+	EApiExtMsgDispatcher = 0,
+	EOpenExtensionInterface,
+	ECloseExtensionInterface,
+	ECancelAndCloseAllClientExtItf
+	};
+
+/**
+	@internalTechnology
+
+	Utility class to register/deregister API extension interface messages
+*/
+struct TExtItfMsgTables
+	{
+	static void RegisterL();
+	static void DeRegister();
+	};
+
+/**
+	@internalTechnology
+
+	A self-forwarding message that walks the chain of service providers looking
+	for an implementor of the specified interface id.
+*/
+class TOpenExtensionInterface : public TCFSigRMessage2Ext
+    {
+public:
+	explicit TOpenExtensionInterface() {}
+	explicit TOpenExtensionInterface(TUint aClientId, TSupportedCommsApiExt aInterfaceId, const RMessage2& aMessage)
+	:	TCFSigRMessage2Ext(aMessage),
+		iClientId(aClientId),
+		iInterfaceId(aInterfaceId)
+		{
+		}
+
+	DECLARE_MVIP_CTR(TOpenExtensionInterface)
+	DATA_VTABLE
+
+protected:
+	virtual void DispatchL(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient);
+	virtual void Error(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient, TInt aError);
+
+public:
+	TUint iClientId;
+    TSupportedCommsApiExt iInterfaceId;
+    };
+
+/**
+   @internalTechnology
+
+	A self-forwarding message that walks the chain of service providers looking
+	for an implementor of the specified interface id.
+*/
+class TCloseExtensionInterface : public TCFSigRMessage2Ext
+    {
+public:
+	explicit TCloseExtensionInterface() {}
+	explicit TCloseExtensionInterface(TUint aClientId, TSupportedCommsApiExt aInterfaceId, const RMessage2& aMessage)
+	:	TCFSigRMessage2Ext(aMessage),
+		iClientId(aClientId),
+		iInterfaceId(aInterfaceId)
+        {
+        }
+
+	DECLARE_MVIP_CTR(TCloseExtensionInterface)
+	DATA_VTABLE
+
+protected:
+	virtual void DispatchL(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient);
+	virtual void Error(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient, TInt aError);
+
+public:
+	TUint iClientId;
+    TSupportedCommsApiExt iInterfaceId;
+    };
+
+/**
+	TCancelClientExtItfRequests forwards itself down the chain of service providers causing
+	all requests for the specified client to be cancelled.
+
+	@internalTechnology
+*/
+
+//MZ: This current hard-coded routing (and closing) behaviour is not ideal.
+
+//We should migrate ESockSvr to the solution in Den,
+//where each session & subsession has its own API ext register
+//and closes all opened extension when going out of scope.
+class TCancelAndCloseAllClientExtItf : public Messages::TSignalBase, public ESock::TCFClientItfExt<ESock::TCFClientType::ECtrl>
+	{
+public:
+	explicit TCancelAndCloseAllClientExtItf() {}
+    explicit TCancelAndCloseAllClientExtItf(TUint aClientId)
+	:	iClientId(aClientId)
+		{
+		}
+
+	DECLARE_MVIP_CTR(TCancelAndCloseAllClientExtItf)
+	DATA_VTABLE
+
+protected:
+	virtual void DispatchL(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient);
+	virtual void Error(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient, TInt aError);
+
+private:
+	void CancelCloseAllAndForwardMsgL(const Messages::TRuntimeCtxId& aSender, Messages::TSignalBase& aMessage, Messages::ANode& aNode);
+
+private:
+	TUint iClientId;
+	};
+
+
+/**
+	TApiExtMsgDispatcher is a self-forwarding dispatcher of TCommsApiExtReqMsg messages.
+
+	@internalTechnology
+*/
+class TApiExtMsgDispatcher : public Messages::TSignalBase, public ESock::TCFClientItfExt<ESock::TCFClientType::ECtrl>
+    {
+public:
+	explicit TApiExtMsgDispatcher() { }
+	explicit TApiExtMsgDispatcher(TUint aClientId, const Elements::RResponseMsg& aResponseMsg)
+    :	iClientId(aClientId), iResponseMsg(aResponseMsg)
+		{
+		}
+
+	DECLARE_MVIP_CTR(TApiExtMsgDispatcher)
+	DATA_VTABLE
+
+protected:
+	virtual void DispatchL(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient);
+	virtual void Error(const Messages::TRuntimeCtxId& aSender, const Messages::TRuntimeCtxId& aRecipient, TInt aError);
+
+private:
+	TUint iClientId;
+	Elements::RResponseMsg iResponseMsg;
+	};
+
+
+/**
+@internalTechnology
+*/
+class TCommsClientSideApiExt
+	{
+public:
+	static TBool IsSupported(TSupportedCommsApiExt aApiExtensionId);
+	};
+
+} // namespace ESock
+
+
+#endif // SS_APIEXT_MESSAGES_H_INCLUDED
+