public IDnsQueryResponse GetResponse()
{
var elapsed = Elapsed();
if (elapsed <= 0)
{
return(_response);
}
var response = new DnsResponseMessage(_response.Header, _response.MessageSize)
{
Audit = (_response as DnsQueryResponse)?.Audit ?? new LookupClientAudit()
};
foreach (var record in _response.Questions)
{
response.AddQuestion(record);
}
foreach (var record in _response.Answers)
{
var clone = record.Clone();
clone.TimeToLive = clone.TimeToLive - elapsed;
response.AddAnswer(clone);
}
foreach (var record in _response.Additionals)
{
var clone = record.Clone();
clone.TimeToLive = clone.TimeToLive - elapsed;
response.AddAnswer(clone);
}
foreach (var record in _response.Authorities)
{
var clone = record.Clone();
clone.TimeToLive = clone.TimeToLive - elapsed;
response.AddAnswer(clone);
}
var qr = response.AsQueryResponse(_response.NameServer);
return(qr);
}
public DnsResponseMessage GetResponseMessage(ArraySegment <byte> responseData)
{
var reader = new DnsDatagramReader(responseData);
var id = reader.ReadUInt16NetworkOrder();
var flags = reader.ReadUInt16NetworkOrder();
var questionCount = reader.ReadUInt16NetworkOrder();
var answerCount = reader.ReadUInt16NetworkOrder();
var nameServerCount = reader.ReadUInt16NetworkOrder();
var additionalCount = reader.ReadUInt16NetworkOrder();
var header = new DnsResponseHeader(id, flags, questionCount, answerCount, additionalCount, nameServerCount);
var response = new DnsResponseMessage(header, responseData.Count);
for (var questionIndex = 0; questionIndex < questionCount; questionIndex++)
{
var questionQueryString = reader.ReadQuestionQueryString();
var queryTypeValue = reader.ReadUInt16NetworkOrder();
var queryClass = reader.ReadUInt16NetworkOrder();
if (!_queryTypes.TryGetValue(queryTypeValue, out var queryType))
{
queryType = new PseudoResourceRecordType(
abbreviation: "Unknown",
value: queryTypeValue
);
}
var question = new DnsQuestion(questionQueryString, queryType, (QueryClass)queryClass);
response.AddQuestion(question);
}
for (var answerIndex = 0; answerIndex < answerCount; answerIndex++)
{
var info = ReadRecordInfo(reader);
var record = _dnsRecordFactory.GetRecord(info, reader);
response.AddAnswer(record);
}
for (var serverIndex = 0; serverIndex < nameServerCount; serverIndex++)
{
var info = ReadRecordInfo(reader);
var record = _dnsRecordFactory.GetRecord(info, reader);
response.AddAuthority(record);
}
for (var additionalIndex = 0; additionalIndex < additionalCount; additionalIndex++)
{
var info = ReadRecordInfo(reader);
var record = _dnsRecordFactory.GetRecord(info, reader);
response.AddAdditional(record);
}
return(response);
}
public virtual DnsResponseMessage GetResponseMessage(ArraySegment <byte> responseData)
{
var reader = new DnsDatagramReader(responseData);
var factory = new DnsRecordFactory(reader);
var id = reader.ReadUInt16NetworkOrder();
var flags = reader.ReadUInt16NetworkOrder();
var questionCount = reader.ReadUInt16NetworkOrder();
var answerCount = reader.ReadUInt16NetworkOrder();
var nameServerCount = reader.ReadUInt16NetworkOrder();
var additionalCount = reader.ReadUInt16NetworkOrder();
var header = new DnsResponseHeader(id, flags, questionCount, answerCount, additionalCount, nameServerCount);
var response = new DnsResponseMessage(header, responseData.Count);
for (int questionIndex = 0; questionIndex < questionCount; questionIndex++)
{
var question = new DnsQuestion(reader.ReadQuestionQueryString(), (QueryType)reader.ReadUInt16NetworkOrder(), (QueryClass)reader.ReadUInt16NetworkOrder());
response.AddQuestion(question);
}
for (int answerIndex = 0; answerIndex < answerCount; answerIndex++)
{
var info = factory.ReadRecordInfo();
var record = factory.GetRecord(info);
response.AddAnswer(record);
}
for (int serverIndex = 0; serverIndex < nameServerCount; serverIndex++)
{
var info = factory.ReadRecordInfo();
var record = factory.GetRecord(info);
response.AddAuthority(record);
}
for (int additionalIndex = 0; additionalIndex < additionalCount; additionalIndex++)
{
var info = factory.ReadRecordInfo();
var record = factory.GetRecord(info);
response.AddAdditional(record);
}
return(response);
}