* @return the number of bytes written
     */
    protected int writeHeaderWireFormat(final 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;