length = bufferIndex - start;
        return length;
    }
    int writeHeaderWireFormat( byte[] dst, int dstIndex ) {
        System.arraycopy( header, 0, dst, dstIndex, header.length );
        dst[dstIndex + CMD_OFFSET] = command;
        dst[dstIndex + FLAGS_OFFSET] = flags;
        writeInt2( flags2, dst, dstIndex + FLAGS_OFFSET + 1 );
        dstIndex += TID_OFFSET;
        writeInt2( tid, dst, dstIndex );

    }


    protected int writeHeaderWireFormat ( byte[] dst, int dstIndex ) {
        System.arraycopy(SMBUtil.SMB_HEADER, 0, dst, dstIndex, SMBUtil.SMB_HEADER.length);
        dst[ dstIndex + SmbConstants.CMD_OFFSET ] = this.command;
        dst[ dstIndex + SmbConstants.FLAGS_OFFSET ] = this.flags;
        SMBUtil.writeInt2(this.flags2, dst, dstIndex + SmbConstants.FLAGS_OFFSET + 1);
        dstIndex += SmbConstants.TID_OFFSET;