public DnsDatagram QueryClosestDelegation(DnsDatagram request)
{
DnsDatagram authResponse = DnsApplicationQueryClosestDelegation(request);
if (authResponse is null)
{
authResponse = _authZoneManager.QueryClosestDelegation(request);
}
DnsDatagram cacheResponse = _cacheZoneManager.QueryClosestDelegation(request);
if ((authResponse is not null) && (authResponse.Authority.Count > 0))
{
if ((cacheResponse is not null) && (cacheResponse.Authority.Count > 0))
{
DnsResourceRecord authResponseFirstAuthority = authResponse.FindFirstAuthorityRecord();
DnsResourceRecord cacheResponseFirstAuthority = cacheResponse.FindFirstAuthorityRecord();
if (cacheResponseFirstAuthority.Name.Length > authResponseFirstAuthority.Name.Length)
{
return(cacheResponse);
}
}
return(authResponse);
}
