public async Task TestQuery()
{
using var tokenSource = new CancellationTokenSource(TimeSpan.FromMilliseconds(500));
var endpoint = GenerateEndPoint();
// Create a real upstream DNS client to serve the request (todo: mock this)
using var upstream = new DnsUdpClient(IPAddress.Parse("1.1.1.1"));
// Create a loopback server
using var server = new DnsHttpServer(upstream, x => x.ConfigureKestrel(y => y.Listen(endpoint)));
// Start recieving
using var receiveTask = server.Listen(tokenSource.Token);
// Create a loopback DNS client to talk to the server
using var client = new DnsHttpClient(new HttpClient { BaseAddress = new Uri($"http://{endpoint.Address}:{endpoint.Port}") });
try
{
var query = DnsQueryFactory.CreateQuery("google.com");
// Send a DNS request to the server, verify the results
var response = await client.Query(query, tokenSource.Token);
Assert.Equal(query.Id, response.Header.Id);
Assert.Equal(query.Host, response.Header.Host);
Assert.True(response.Answers.Count > 0);
}
finally
{
tokenSource.Cancel();
await receiveTask;
}
}
public async Task TestLookupWithGoogle(string domain, DnsQueryType type)
{
using var client = new DnsHttpClient(new HttpClient { BaseAddress = new Uri("https://dns.google/") });
await client.RunQuery(domain, type);
}
public async Task TestLookupWithCloudFlare(string domain, DnsQueryType type)
{
using var client = new DnsHttpClient(new HttpClient { BaseAddress = new Uri("https://cloudflare-dns.com/") });
await client.RunQuery(domain, type, type == DnsQueryType.ANY?DnsResponseCode.NotImp : DnsResponseCode.NoError);
}
