public async Task LookupWithFallback_FailedAll()
{
var mockMailReference = new MockMailReference(
"mock-1",
"*****@*****.**",
new[] { "*****@*****.**" }.ToImmutableList(),
true,
"Some text",
_queue);
_queue.References.Add(mockMailReference);
_dns.AddMx("example.com", "first.example.com", 10);
_dns.AddIp("first.example.com", IPAddress.Parse("10.0.0.1"));
Task executeTask = Task.Run(
() => _transfer.SendMailsToDomain("example.com", new[] { mockMailReference }, CancellationToken.None));
MockTcpConnectionProvider.MockTcpClient client = await GetClientFor(IPAddress.Parse("10.0.0.1"));
await WriteToAsync(
client.HalfStream,
@"554 Failed
554 Failed
");
await executeTask;
Assert.Equal(1, _queue.References.Count);
Assert.Equal(0, _queue.DeletedReferences.Count);
SmtpFailureData failure = _failures.GetFailure("mock-1", false);
Assert.NotNull(failure);
Assert.Equal(1, failure.Retries);
Assert.InRange(failure.FirstFailure, DateTimeOffset.UtcNow - TimeSpan.FromSeconds(1), DateTime.UtcNow);
}
public async Task LookupWithFallback()
{
var mockMailReference = new MockMailReference(
"mock-1",
"*****@*****.**",
new[] { "*****@*****.**" }.ToImmutableList(),
true,
"Some text",
_queue);
_queue.References.Add(mockMailReference);
_dns.AddMx("example.com", "second.example.com", 20);
_dns.AddMx("example.com", "first.example.com", 10);
_dns.AddMx("example.com", "third.example.com", 30);
_dns.AddIp("first.example.com", IPAddress.Parse("10.0.0.1"));
_dns.AddIp("second.example.com", IPAddress.Parse("10.0.0.2"));
_dns.AddIp("third.example.com", IPAddress.Parse("10.0.0.3"));
Task executeTask = Task.Run(
() => _transfer.SendMailsToDomain("example.com", new[] { mockMailReference }, CancellationToken.None));
MockTcpConnectionProvider.MockTcpClient client = await GetClientFor(IPAddress.Parse("10.0.0.1"));
await WriteToAsync(
client.HalfStream,
@"554 Failed
554 Failed
");
client = await GetClientFor(IPAddress.Parse("10.0.0.2"));
await WriteToAsync(
client.HalfStream,
@"554 Failed
554 Failed
");
client = await GetClientFor(IPAddress.Parse("10.0.0.3"));
await WriteToAsync(
client.HalfStream,
@"220 example.com greets test.example.com (HELO)
250 Ok (MAIL)
250 Ok (RCPT)
354 End data with <CR><LF>.<CR><LF> (DATA)
250 Ok (DATA with .)
250 Bye (QUIT)
");
await executeTask;
Assert.Equal(0, _queue.References.Count);
Assert.Equal(1, _queue.DeletedReferences.Count);
}
private async Task <MockTcpConnectionProvider.MockTcpClient> GetClientFor(IPAddress ipAddress)
{
MockTcpConnectionProvider.MockTcpClient client = null;
while (client?.HalfStream == null)
{
client = _tcp.Created.FirstOrDefault(t => Equals(t.IpAddress, ipAddress));
if (client?.HalfStream == null)
{
await Task.Delay(100);
}
}
return(client);
}