public async Task Resolve_ShouldUse_DnsClients_DnsServers()
{
// Arrange
var nameServers = new[]
{
new IPEndPoint(IPAddress.Parse("15.46.251.79"), 53),
new IPEndPoint(IPAddress.Parse("8.8.8.8"), 53),
new IPEndPoint(IPAddress.Parse("10.3.15.47"), 66)
};
_dnsClients.NameServers().Returns(nameServers.ToList());
_dnsClients.DnsClient(Arg.Any <IReadOnlyCollection <IPEndPoint> >()).Returns(args =>
{
var dnsClient = Substitute.For <IDnsClient>();
dnsClient.NameServers.Returns(args.ArgAt <IReadOnlyCollection <IPEndPoint> >(0));
return(dnsClient);
});
var client = new Core.OS.Net.Dns.DnsClient(_dnsClients, _networkInterfaces);
// Act
await client.Resolve("some.host", CancellationToken.None);
// Assert
client.NameServers.Should().BeEquivalentTo(nameServers);
}
private void RefreshDnsClient()
{
if (!_addressChanged)
{
return;
}
_addressChanged = false;
var dnsServers = _dnsClients.NameServers();
if (_dnsClient.NameServers.ToHashSet().SetEquals(dnsServers))
{
return;
}
_dnsClient = _dnsClients.DnsClient(dnsServers);
}