if (readn( in, sbuf, 0, 4 ) < 4) {
                try {
                    socket.close();
                } catch(IOException ioe) {
                }
                throw new SmbException( "EOF during NetBIOS session request" );
            }
            switch( sbuf[0] & 0xFF ) {
                case SessionServicePacket.POSITIVE_SESSION_RESPONSE:
                    if( log.level >= 4 )