public async Task UpdateDnsResultsForRecordAsync(WatchedRecord record)
{
var query = !string.IsNullOrWhiteSpace(record.Prefix)
? $"{record.Prefix}.{record.WatchedDomain.DomainName}"
: record.WatchedDomain.DomainName;
var servers = await _dnsServersService.GetDnsServersAsync();
foreach (var server in servers.DnsServers)
{
var data = new DnsQueryData
{
Domain = query,
RecordType = record.RecordType,
Ip = server.IpAddress,
Port = server.Port
};
var result = await _dnsResolver.ResolveDnsQuery(data);
var existingResult = record.Results
.FirstOrDefault(e => e.DnsServerId == server.Id);
if (existingResult != null)
{
existingResult.Value = result.Value;
existingResult.TimeToLive = result.TimeToLive;
}
else
{
var newResult = new RecordServerResult
{
Value = result.Value,
TimeToLive = result.TimeToLive,
DnsServerId = server.Id
};
record.Results.Add(newResult);
}
}
await _context.SaveChangesAsync();
}