public LookupClientWrapper(DomainParser domainParser, ILogService logService, ILookupClient lookupClient, LookupClientWrapper @default)
{
LookupClient = lookupClient;
lookupClient.UseCache = false;
_log = logService;
_domainParser = domainParser;
_default = @default;
}
private IDnsQueryResponse RecursivelyFollowCnames(IDnsQueryResponse result)
{
if (result.Answers.CnameRecords().Any())
{
var cname = result.Answers.CnameRecords().First();
var nsChecker = this;
if (_default != null)
{
nsChecker = _default;
}
var nameServerIpAddresses = nsChecker.GetNameServerIpAddresses(cname.CanonicalName);
var recursiveClient = new LookupClientWrapper(_domainParser, _log, new LookupClient(nameServerIpAddresses.ToArray()), _default);
IDnsQueryResponse txtResponse = recursiveClient.LookupClient.Query(cname.CanonicalName, QueryType.TXT);
_log.Debug("Name server {NameServerIpAddress} selected", txtResponse.NameServer.Endpoint.Address.ToString());
return(recursiveClient.RecursivelyFollowCnames(txtResponse));
}
return(result);
}