NetworkPackets.Dns.DnsPacket.DnsPacket C# (CSharp) Method

    public DnsPacket(short ID, bool Query, byte Opcode, bool AA, bool RA,
                     bool RD, Question[] Questions, Response[] Answers,
                     Response[] Authority, Response[] Additional) {
      byte[] header = new byte[12];

      this.ID = ID;
      header[0] = (byte) ((ID >> 8) & 0xFF);
      header[1] = (byte) (ID & 0xFF);

      this.Query = Query;
      if(!Query) {
        header[2] |= 0x80;
      }

      this.Opcode = Opcode;
      header[2] |= (byte) (Opcode << 3);

      this.AA = AA;
      if(AA) {
        header[2] |= 0x4;
      }
      this.RD = RD;
      if(RD) {
        header[2] |= 0x1;
      }
      this.RA = RA;
      if(RA) {
        header[3] |= 0x80;
      }

      if(Questions != null) {
        this.Questions = Questions;
        header[4] = (byte) ((Questions.Length >> 8) & 0xFF);
        header[5] = (byte) (Questions.Length  & 0xFF);
      }
      else {
        this.Questions = new Question[0];
        header[4] = 0;
        header[5] = 0;
      }

      if(Answers != null) {
        this.Answers = Answers;
        header[6] = (byte) ((Answers.Length >> 8) & 0xFF);
        header[7] = (byte) (Answers.Length  & 0xFF);
      }
      else {
        this.Answers = new Response[0];
        header[6] = 0;
        header[7] = 0;
      }

      if(Authority != null) {
        this.Authority = Authority;
        header[8] = (byte) ((Authority.Length >> 8) & 0xFF);
        header[9] = (byte) (Authority.Length  & 0xFF);
      }
      else {
        this.Authority = new Response[0];
        header[8] = 0;
        header[9] = 0;
      }

      if(Additional != null) {
        this.Additional = Additional;
        header[10] = (byte) ((Additional.Length >> 8) & 0xFF);
        header[11] = (byte) (Additional.Length  & 0xFF);
      }
      else {
        this.Additional = new Response[0];
        header[10] = 0;
        header[11] = 0;
      }

      _icpacket = MemBlock.Reference(header);

      for(int i = 0; i < this.Questions.Length; i++) {
        _icpacket = new CopyList(_icpacket, Questions[i].ICPacket);
      }
      for(int i = 0; i < this.Answers.Length; i++) {
        _icpacket = new CopyList(_icpacket, Answers[i].ICPacket);
      }
      for(int i = 0; i < this.Authority.Length; i++) {
        _icpacket = new CopyList(_icpacket, Authority[i].ICPacket);
      }
      for(int i = 0; i < this.Additional.Length; i++) {
        _icpacket = new CopyList(_icpacket, Additional[i].ICPacket);
      }
    }