public async Task Query_SecureEU()
{
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint
{
Hostname = "securedns.eu",
Pins = new[] { "h3mufC43MEqRD6uE4lz6gAgULZ5/riqH/E+U+jE3H8g=" },
Address = IPAddress.Parse("146.185.167.43")
},
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
var response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
}
}
public async Task Query_Cloudflare_IPv6()
{
if (!SupportsIPv6)
{
Assert.Inconclusive("IPv6 not supported by OS.");
}
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint
{
Hostname = "cloudflare-dns.com",
Address = IPAddress.Parse("2606:4700:4700::1111")
}
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
var response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
}
}
public async Task Query_Google()
{
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint
{
Hostname = "dns.google",
Address = IPAddress.Parse("8.8.8.8")
}
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
var response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
}
}
public async Task Query_OneDeadServer()
{
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint
{
Address = IPAddress.Parse("127.0.0.1"),
Port = 8530
},
new DotEndPoint
{
Hostname = "cloudflare-dns.com",
Address = IPAddress.Parse("1.1.1.1")
}
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
var response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
}
}
public void Query_InvalidServer_Hostname()
{
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint
{
Hostname = "bad-cloudflare-dns.com", // bad
Address = IPAddress.Parse("1.1.1.1")
}
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "emanon.noname.google.com", Type = DnsType.A
});
ExceptionAssert.Throws <Exception>(() =>
{
var _ = dot.QueryAsync(query).Result;
});
}
}
public async Task Query_Stream_Closes()
{
using (var dot = new DotClient())
{
var query = new Message {
RD = true, Id = 0x1234
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
var response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
(await dot.GetDnsServerAsync()).Dispose();
response = await dot.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
}
}
public void Query_UnknownName_NoThrow()
{
using (var dot = new DotClient {
ThrowResponseError = false
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "emanon.noname.google.com", Type = DnsType.A
});
var result = dot.QueryAsync(query).Result;
Assert.AreEqual(MessageStatus.NameError, result.Status);
}
}
public void Query_UnknownName()
{
using (var dot = new DotClient())
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "emanon.noname.google.com", Type = DnsType.A
});
ExceptionAssert.Throws <IOException>(() =>
{
var _ = dot.QueryAsync(query).Result;
}, "DNS error 'NameError'.");
}
}
public void NoSerer()
{
using (var dot = new DotClient
{
Servers = new DotEndPoint[0]
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "ipfs.io", Type = DnsType.TXT
});
ExceptionAssert.Throws <Exception>(() =>
{
var _ = dot.QueryAsync(query).Result;
});
}
}
public async Task SecureQuery_Has_RRs()
{
var dns = new DotClient();
var query = new Message {
RD = true
}.UseDnsSecurity();
query.Questions.Add(new Question {
Name = "cloudflare-dns.com", Type = DnsType.AAAA
});
var response = await dns.QueryAsync(query);
Assert.IsNotNull(response);
Assert.AreNotEqual(0, response.Answers.Count);
var opt = response.AdditionalRecords.OfType <OPTRecord>().Single();
Assert.AreEqual(true, opt.DO);
var rrsig = response.Answers.OfType <RRSIGRecord>().Single();
Assert.AreEqual(DnsType.AAAA, rrsig.TypeCovered);
}
public void Query_InvalidServer_IPAddress()
{
using (var dot = new DotClient
{
Servers = new[]
{
new DotEndPoint {
Address = IPAddress.Any
}
}
})
{
var query = new Message {
RD = true
};
query.Questions.Add(new Question {
Name = "emanon.noname.google.com", Type = DnsType.A
});
ExceptionAssert.Throws <Exception>(() =>
{
var _ = dot.QueryAsync(query).Result;
});
}
}
