diff --git a/headers/private/app/Session.h b/headers/private/app/Session.h
new file mode 100644
index 0000000000..3e42065e33
--- /dev/null
+++ b/headers/private/app/Session.h
@@ -0,0 +1,79 @@
+#ifndef _SESSION_H
+#define _SESSION_H
+
+#include <BeBuild.h>
+#include <OS.h>
+#include <Region.h>
+#include <Rect.h>
+#include <Point.h>
+
+#define AS_SESSION_MSG		'assm'
+
+class BSession {
+
+public:
+				BSession(port_id receivePort, port_id sendPort, bool isPortLink = false);
+				BSession(int32, char *);
+				BSession( const BSession &ses );
+virtual			~BSession();
+		void	SetSendPort( port_id port );
+		void	SetRecvPort( port_id port );
+
+		char*		ReadString();
+		status_t	ReadBool( bool *b );
+		status_t	ReadInt8( int8 *i );
+		status_t	ReadInt16( int16 *i );
+		status_t	ReadInt32( int32 *i );
+		status_t	ReadInt64( int64 *i );
+		status_t	ReadFloat( float *f );
+		status_t	ReadFloatFromInt( float *f );
+		status_t	ReadDouble( double *d );
+		status_t	ReadDoubleFromInt( double *d );
+		status_t	ReadPoint( BPoint *point );
+		status_t	ReadPointFromInts( BPoint *point );
+		status_t	ReadRectCR( clipping_rect *rect );
+		status_t	ReadRect( BRect *rect );
+		status_t	ReadRectFromInts( BRect *rect );
+		status_t	ReadData( void* data, int32 size );
+
+		status_t	WriteString( const char* string );
+		status_t	WriteBool( const bool& b );
+		status_t	WriteInt8( const int8& i );
+		status_t	WriteUInt8( const uint8& i );
+		status_t	WriteInt16( const int16& i );
+		status_t	WriteUInt16( const uint16& i );		
+		status_t	WriteInt32( const int32& i );
+		status_t	WriteUInt32( const uint32& i );		
+		status_t	WriteInt64( const int64& i );
+		status_t	WriteUInt64( const uint64& i );		
+		status_t	WriteFloat(const float& f );
+		status_t	WriteFloatAsInt( const float& f );
+		status_t	WriteDouble( const double& d );
+		status_t	WriteDoubleAsInt( const double& d );
+		status_t	WritePoint(const BPoint& point);
+		status_t	WritePointAsInt(const BPoint& point);
+		status_t	WriteRect(const clipping_rect& rect);
+		status_t	WriteRect(const BRect& rect);
+		status_t	WriteRectAsInt(const BRect& rect);
+		status_t	WriteData(const void* data, int32 size);
+
+		status_t	Sync();
+		void		Close();
+private:
+friend class PortLink;
+
+		port_id	fSendPort;
+		port_id	fReceivePort;
+
+		char	*fSendBuffer;
+		int32	fSendPosition;
+		int32	fSendCode;
+
+		char	*fReceiveBuffer;
+		int32	fReceiveSize;
+		int32	fReceivePosition;
+};
+
+//extern _IMPEXP_BE _BSession_ *main_session;
+
+#endif