public static async Task <SecondaryZone> CreateAsync(DnsServer dnsServer, string name, string primaryNameServerAddresses = null)
{
SecondaryZone secondaryZone = new SecondaryZone(name);
secondaryZone._dnsServer = dnsServer;
DnsQuestionRecord soaQuestion = new DnsQuestionRecord(name, DnsResourceRecordType.SOA, DnsClass.IN);
DnsDatagram soaResponse = null;
if (primaryNameServerAddresses == null)
{
soaResponse = await secondaryZone._dnsServer.DirectQueryAsync(soaQuestion);
}
else
{
DnsClient dnsClient = new DnsClient(primaryNameServerAddresses);
dnsClient.Proxy = secondaryZone._dnsServer.Proxy;
dnsClient.PreferIPv6 = secondaryZone._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(secondaryZone._name, DnsResourceRecordType.SOA, DnsClass.IN, soa.Refresh, soa) };
if (!string.IsNullOrEmpty(primaryNameServerAddresses))
{
soaRR[0].SetGlueRecords(primaryNameServerAddresses);
}
secondaryZone._entries[DnsResourceRecordType.SOA] = soaRR;
secondaryZone._isExpired = true; //new secondary zone is considered expired till it refreshes
secondaryZone._refreshTimer = new Timer(secondaryZone.RefreshTimerCallback, null, Timeout.Infinite, Timeout.Infinite);
return(secondaryZone);
}
public static async Task <SecondaryZone> CreateAsync(DnsServer dnsServer, string name, string primaryNameServerAddresses = null, DnsTransportProtocol zoneTransferProtocol = DnsTransportProtocol.Tcp, string tsigKeyName = null)
{
switch (zoneTransferProtocol)
{
case DnsTransportProtocol.Tcp:
case DnsTransportProtocol.Tls:
break;
default:
throw new NotSupportedException("Zone transfer protocol is not supported: XFR-over-" + zoneTransferProtocol.ToString().ToUpper());
}
SecondaryZone secondaryZone = new SecondaryZone(dnsServer, name);
DnsQuestionRecord soaQuestion = new DnsQuestionRecord(name, DnsResourceRecordType.SOA, DnsClass.IN);
DnsDatagram soaResponse;
if (primaryNameServerAddresses == null)
{
soaResponse = await secondaryZone._dnsServer.DirectQueryAsync(soaQuestion);
}
else
{
DnsClient dnsClient = new DnsClient(primaryNameServerAddresses);
foreach (NameServerAddress nameServerAddress in dnsClient.Servers)
{
if (nameServerAddress.IsIPEndPointStale)
{
await nameServerAddress.ResolveIPAddressAsync(secondaryZone._dnsServer, secondaryZone._dnsServer.PreferIPv6);
}
}
dnsClient.Proxy = secondaryZone._dnsServer.Proxy;
dnsClient.PreferIPv6 = secondaryZone._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);
if (string.IsNullOrEmpty(tsigKeyName))
{
soaResponse = await dnsClient.ResolveAsync(soaRequest);
}
else if ((dnsServer.TsigKeys is not null) && dnsServer.TsigKeys.TryGetValue(tsigKeyName, out TsigKey key))
{
soaResponse = await dnsClient.ResolveAsync(soaRequest, key, REFRESH_TSIG_FUDGE);
}
public static async Task <SecondaryZone> CreateAsync(DnsServer dnsServer, string name, string primaryNameServerAddresses = null, DnsTransportProtocol zoneTransferProtocol = DnsTransportProtocol.Tcp, string tsigKeyName = null)
{
switch (zoneTransferProtocol)
{
case DnsTransportProtocol.Tcp:
case DnsTransportProtocol.Tls:
break;
default:
throw new NotSupportedException("Zone transfer protocol is not supported: XFR-over-" + zoneTransferProtocol.ToString().ToUpper());
}
SecondaryZone secondaryZone = new SecondaryZone(dnsServer, name);
DnsQuestionRecord soaQuestion = new DnsQuestionRecord(name, DnsResourceRecordType.SOA, DnsClass.IN);
DnsDatagram soaResponse;
if (primaryNameServerAddresses == null)
{
soaResponse = await secondaryZone._dnsServer.DirectQueryAsync(soaQuestion).WithTimeout(2000);
}
else
{
DnsClient dnsClient = new DnsClient(primaryNameServerAddresses);
dnsClient.Proxy = secondaryZone._dnsServer.Proxy;
dnsClient.PreferIPv6 = secondaryZone._dnsServer.PreferIPv6;
if (string.IsNullOrEmpty(tsigKeyName))
{
soaResponse = await dnsClient.ResolveAsync(soaQuestion);
}
else if ((dnsServer.TsigKeys is not null) && dnsServer.TsigKeys.TryGetValue(tsigKeyName, out TsigKey key))
{
soaResponse = await dnsClient.ResolveAsync(soaQuestion, key, REFRESH_TSIG_FUDGE);
}
public SecondarySubDomainZone(SecondaryZone secondaryZone, string name)
: base(secondaryZone, name)
{
}
