public void Parse(byte[] data, int offset)
{
while (offset < data.Length)
{
int labelLen;
MyDnsRecord RecordItem = new MyDnsRecord();
RecordItem.Name = MyDns.GetLabelName(data, offset, out labelLen);
offset += labelLen;
//
offset++;
RecordItem.QType = (QueryType)data[++offset];
//
offset++;
RecordItem.QClass = (QueryClass)data[++offset];
//
offset++;
RecordItem.TTL = data[offset++] * 256 * 256 * 256 + data[offset++] * 256 * 256 + data[offset++] * 256 + data[offset++];
//
RecordItem.RDLength = data[offset++] * 256 + data[offset++];
//
switch (RecordItem.QType)
{
case QueryType.A:
RecordItem.RDDate = new A_RR(data, offset, RecordItem.RDLength);
break;
case QueryType.CNAME:
RecordItem.RDDate = new CNAME_RR(data, offset, RecordItem.RDLength);
break;
case QueryType.MX:
RecordItem.RDDate = new MX_RR(data, offset, RecordItem.RDLength);
break;
case QueryType.NS:
RecordItem.RDDate = new NS_RR(data, offset, RecordItem.RDLength);
break;
case QueryType.SOA:
RecordItem.RDDate = new SOA_RR(data, offset, RecordItem.RDLength);
break;
case QueryType.TXT:
RecordItem.RDDate = new TXT_RR(data, offset, RecordItem.RDLength);
break;
}
Records.Add(RecordItem);
offset += RecordItem.RDLength;
}
}
private void btnSearch_Click(object sender, EventArgs e)
{
Type myenum = typeof(QueryType);
Array ar= Enum.GetValues(myenum);
QueryType qtype= (QueryType ) ar.GetValue(cbType.SelectedIndex);
MyDns mydns = new MyDns();
if (!mydns.Search(txtDomain.Text.Trim(), qtype, txtDns.Text.Trim(), null ))
{
MessageBox.Show(mydns.header.RCODE.ToString());
return;
}
txtInfo.Clear();
txtInfo.AppendText (string.Format ("回复记录数：{0}\n",mydns.header.ANCOUNT) );
txtInfo.AppendText(string.Format("回复额外记录数：{0}\n", mydns.header.ARCOUNT ));
txtInfo.AppendText(string.Format("回复权威记录数：{0}", mydns.header.NSCOUNT ));
txtContent.Clear();
foreach (MyDnsRecord item in mydns.record.Records)
{
txtContent.AppendText(item.QType.ToString() + " " + item.RDDate.ToString()+"\n");
}
}