diff --git a/public/iclient.h b/public/iclient.h
index 9fcc6337..2015f26a 100644
--- a/public/iclient.h
+++ b/public/iclient.h
@@ -18,6 +18,7 @@ class IServer;
 class INetMessage;
 struct NetMessageCvar_t;
 struct USERID_t;
+class CMsg_CVars;
 
 enum CrossPlayPlatform_t
 {
@@ -34,7 +35,7 @@ public:
 	virtual	~IClient() {}
 
 	// connect client
-	virtual void	Connect( const char * szName, int nUserID, INetChannel *pNetChannel, bool bFakePlayer, CrossPlayPlatform_t platform, CUtlVector< NetMessageCvar_t > *pVecCvars = NULL ) = 0;
+	virtual void	Connect( const char * szName, int nUserID, INetChannel *pNetChannel, bool bFakePlayer, CrossPlayPlatform_t platform, CMsg_CVars *pCvars = NULL ) = 0;
 
 	// set the client in a pending state waiting for a new game
 	virtual void	Inactivate( void ) = 0;
@@ -44,6 +45,8 @@ public:
 
 	// disconnects a client with a given reason
 	virtual void	Disconnect( const char *reason, ... ) = 0;
+	
+	virtual bool	ChangeSplitscreenUser( int ) = 0;
 
 	virtual int				GetPlayerSlot() const = 0; // returns client slot (usually entity number-1)
 	virtual int				GetUserID() const = 0; // unique ID on this server 
diff --git a/public/inetchannel.h b/public/inetchannel.h
index 218d7a21..4fbe3f24 100644
--- a/public/inetchannel.h
+++ b/public/inetchannel.h
@@ -44,7 +44,8 @@ public:
 	virtual	~INetChannel( void ) {};
 
 	virtual void	SetDataRate(float rate) = 0;
-	virtual bool	RegisterMessage(INetMessage *msg) = 0;
+	virtual bool	RegisterMessage(INetMessageBinder *msg) = 0;
+	virtual bool	UnregisterMessage(INetMessageBinder *msg) = 0;
 	virtual bool	StartStreaming( unsigned int challengeNr ) = 0;
 	virtual void	ResetStreaming( void ) = 0;
 	virtual void	SetTimeout(float seconds, bool bForceExact = false) = 0;
@@ -107,6 +108,8 @@ public:
 	virtual void	DetachSplitPlayer( int nSplitPlayerSlot ) = 0;
 
 	virtual bool	IsRemoteDisconnected() const = 0;
+	
+	virtual bool	WasLastMessageReliable() const = 0;
 };