/// <summary>
/// Creates a new instance of this class by parsing the given data
/// </summary>
/// <param name="bData">The data to parse</param>
public DNSFrame(byte[] bData)
{
sIdentifier = (short)((bData[0] << 8) + bData[1]);
bQRFlag = (bData[2] & 0x80) > 0;
dnsOperationCode = (DNSOptCode)((bData[2] >> 3) & 0x0F);
bAAFlag = (bData[2] & 0x04) > 0;
bTCFlag = (bData[2] & 0x02) > 0;
bRDFlag = (bData[2] & 0x01) > 0;
bRAFlag = (bData[3] & 0x80) > 0;
dnsResponseCode = (DNSResponseCode)((bData[3]) & 0x0F);
int iQCount = (bData[4] << 8) + bData[5];
int iACount = (bData[6] << 8) + bData[7];
int iAuthCount = (bData[8] << 8) + bData[9];
int iAddCount = (bData[10] << 8) + bData[11];
lQuestions = new List <DNSQuestion>();
lAnswers = new List <DNSResourceRecord>();
lAuthorotive = new List <DNSResourceRecord>();
lAdditional = new List <DNSResourceRecord>();
int iIndex = 12;
while (lQuestions.Count < iQCount)
{
DNSQuestion qLast = new DNSQuestion(bData, ref iIndex);
lQuestions.Add(qLast);
}
while (lAnswers.Count < iACount)
{
DNSResourceRecord rLast = new DNSResourceRecord(bData, ref iIndex);
lAnswers.Add(rLast);
}
while (lAuthorotive.Count < iAuthCount)
{
DNSResourceRecord rLast = new DNSResourceRecord(bData, ref iIndex);
lAuthorotive.Add(rLast);
}
while (lAdditional.Count < iAddCount)
{
DNSResourceRecord rLast = new DNSResourceRecord(bData, ref iIndex);
lAdditional.Add(rLast);
}
}
/// <summary>
/// Removes a question record from this instance
/// </summary>
/// <param name="item">The record to remove</param>
public void RemoveQuestion(DNSQuestion item)
{
lQuestions.Remove(item);
}
/// <summary>
/// Checks whether a specific question record is contained in this instance
/// </summary>
/// <param name="item">The question record to search for</param>
/// <returns>A bool indication whether a specific question record is contained in this instance</returns>
public bool ContainsQuestion(DNSQuestion item)
{
return(lQuestions.Contains(item));
}
/// <summary>
/// Adds a question record to this instance
/// </summary>
/// <param name="item">The question record to add</param>
public void AddQuestion(DNSQuestion item)
{
lQuestions.Add(item);
}