public static DnsMessage DecodeDnsMessage(byte[] msgData)
{
DnsMessage message = new DnsMessage();
message.ID = (UInt16)(msgData[0] << 8 | msgData[1]);
message.Type = (MessageType)(msgData[2] >> 7);
message.QueryKind = (QueryKind)((msgData[2] >> 3) & 15);
message.ResponseCode = (ResponseCode)(msgData[3] & 15);
MemoryStream stream = new MemoryStream(msgData);
stream.Position = 4;
BinaryReader reader = new BinaryReader(stream);
int queryCount = ReadUInt16BE(reader);
int answerCount = ReadUInt16BE(reader);
int nsCount = ReadUInt16BE(reader);
int arCount = ReadUInt16BE(reader);
for (int i = 0; i < queryCount; i++)
{
message.Querys.Add(ReadDnsQuery(reader));
}
for (int i = 0; i < answerCount; i++)
{
message.Answers.Add(ReadResourceRecord(reader));
}
for (int i = 0; i < nsCount; i++)
{
message.AuthorityRecords.Add(ReadResourceRecord(reader));
}
for (int i = 0; i < arCount; i++)
{
message.AdditionalRecords.Add(ReadResourceRecord(reader));
}
return(message);
}