public static async Task <StubZone> CreateAsync(DnsServer dnsServer, string name, string primaryNameServerAddresses = null)
{
StubZone stubZone = new StubZone(dnsServer, name);
DnsQuestionRecord soaQuestion = new DnsQuestionRecord(name, DnsResourceRecordType.SOA, DnsClass.IN);
DnsDatagram soaResponse;
if (primaryNameServerAddresses == null)
{
soaResponse = await stubZone._dnsServer.DirectQueryAsync(soaQuestion);
}
else
{
DnsClient dnsClient = new DnsClient(primaryNameServerAddresses);
foreach (NameServerAddress nameServerAddress in dnsClient.Servers)
{
if (nameServerAddress.IsIPEndPointStale)
{
await nameServerAddress.ResolveIPAddressAsync(stubZone._dnsServer, stubZone._dnsServer.PreferIPv6);
}
}
dnsClient.Proxy = stubZone._dnsServer.Proxy;
dnsClient.PreferIPv6 = stubZone._dnsServer.PreferIPv6;
DnsDatagram soaRequest = new DnsDatagram(0, false, DnsOpcode.StandardQuery, false, false, false, false, false, false, DnsResponseCode.NoError, new DnsQuestionRecord[] { soaQuestion }, null, null, null, DnsDatagram.EDNS_DEFAULT_UDP_PAYLOAD_SIZE);
soaResponse = await dnsClient.ResolveAsync(soaRequest);
}
if ((soaResponse.Answer.Count == 0) || (soaResponse.Answer[0].Type != DnsResourceRecordType.SOA))
{
throw new DnsServerException("DNS Server failed to find SOA record for: " + name);
}
DnsSOARecordData receivedSoa = soaResponse.Answer[0].RDATA as DnsSOARecordData;
DnsSOARecordData soa = new DnsSOARecordData(receivedSoa.PrimaryNameServer, receivedSoa.ResponsiblePerson, 0u, receivedSoa.Refresh, receivedSoa.Retry, receivedSoa.Expire, receivedSoa.Minimum);
DnsResourceRecord[] soaRR = new DnsResourceRecord[] { new DnsResourceRecord(stubZone._name, DnsResourceRecordType.SOA, DnsClass.IN, soa.Refresh, soa) };
if (!string.IsNullOrEmpty(primaryNameServerAddresses))
{
soaRR[0].SetPrimaryNameServers(primaryNameServerAddresses);
}
stubZone._entries[DnsResourceRecordType.SOA] = soaRR;
stubZone._isExpired = true; //new stub zone is considered expired till it refreshes
stubZone._refreshTimer = new Timer(stubZone.RefreshTimerCallback, null, Timeout.Infinite, Timeout.Infinite);
return(stubZone);
}
public static async Task <StubZone> CreateAsync(DnsServer dnsServer, string name, string primaryNameServerAddresses = null)
{
StubZone stubZone = new StubZone(name);
stubZone._dnsServer = dnsServer;
DnsQuestionRecord soaQuestion = new DnsQuestionRecord(name, DnsResourceRecordType.SOA, DnsClass.IN);
DnsDatagram soaResponse = null;
if (primaryNameServerAddresses == null)
{
soaResponse = await stubZone._dnsServer.DirectQueryAsync(soaQuestion);
}
else
{
DnsClient dnsClient = new DnsClient(primaryNameServerAddresses);
dnsClient.Proxy = stubZone._dnsServer.Proxy;
dnsClient.PreferIPv6 = stubZone._dnsServer.PreferIPv6;
soaResponse = await dnsClient.ResolveAsync(soaQuestion);
}
if ((soaResponse == null) || (soaResponse.Answer.Count == 0) || (soaResponse.Answer[0].Type != DnsResourceRecordType.SOA))
{
throw new DnsServerException("DNS Server failed to find SOA record for: " + name);
}
DnsSOARecord receivedSoa = soaResponse.Answer[0].RDATA as DnsSOARecord;
DnsSOARecord soa = new DnsSOARecord(receivedSoa.PrimaryNameServer, receivedSoa.ResponsiblePerson, receivedSoa.Serial - 1, receivedSoa.Refresh, receivedSoa.Retry, receivedSoa.Expire, receivedSoa.Minimum);
DnsResourceRecord[] soaRR = new DnsResourceRecord[] { new DnsResourceRecord(stubZone._name, DnsResourceRecordType.SOA, DnsClass.IN, soa.Refresh, soa) };
if (!string.IsNullOrEmpty(primaryNameServerAddresses))
{
soaRR[0].SetGlueRecords(primaryNameServerAddresses);
}
stubZone._entries[DnsResourceRecordType.SOA] = soaRR;
stubZone._isExpired = true; //new stub zone is considered expired till it refreshes
stubZone._refreshTimer = new Timer(stubZone.RefreshTimerCallback, null, Timeout.Infinite, Timeout.Infinite);
return(stubZone);
}
