Failing test: Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.Tests.TcpFailoverTests.TcpFailover_Simple_Success

[radical]

Build Information

Build: https://github.com/dotnet/aspire/actions/runs/15937073176
Build error leg or test failing: Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.Tests.TcpFailoverTests.TcpFailover_Simple_Success
Pull request:

Error Message

Fill the error message using step by step known issues guidance.

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  "ErrorPattern": "",
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Assert.Single() Failure: The collection was empty   at Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.Tests.TcpFailoverTests.TcpFailover_Simple_Success() in /_/tests/Microsoft.Extensions.ServiceDiscovery.Dns.Tests/Resolver/TcpFailoverTests.cs:line 36
--- End of stack trace from previous location ---

Stdout

Details

| [2025-06-27T22:28:57] Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.DnsResolver Warning: Query A tcp-simple.test on 127.0.0.1:52756 attempt 1 failed due to a network error.
| System.Net.Sockets.SocketException (10061): No connection could be made because the target machine actively refused it.
|    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
|    at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
|    at System.Net.Sockets.Socket.<ConnectAsync>g__WaitForConnectWithCancellation|285_0(AwaitableSocketAsyncEventArgs saea, ValueTask connectTask, CancellationToken cancellationToken)
|    at Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.DnsResolver.SendDnsQueryCoreTcpAsync(IPEndPoint serverEndPoint, EncodedDomainName dnsSafeName, QueryType queryType, CancellationToken cancellationToken) in /_/src/Microsoft.Extensions.ServiceDiscovery.Dns/Resolver/DnsResolver.cs:line 777
|    at Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.DnsResolver.SendQueryToServerAsync(IPEndPoint serverEndPoint, String name, EncodedDomainName dnsSafeName, QueryType queryType, Int32 attempt, CancellationToken cancellationToken) in /_/src/Microsoft.Extensions.ServiceDiscovery.Dns/Resolver/DnsResolver.cs:line 523
|    at Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.DnsResolver.SendQueryToServerWithTimeoutAsync(IPEndPoint serverEndPoint, String name, EncodedDomainName dnsSafeName, QueryType queryType, Int32 attempt, CancellationToken cancellationToken) in /_/src/Microsoft.Extensions.ServiceDiscovery.Dns/Resolver/DnsResolver.cs:line 472
|    at Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.DnsResolver.SendQueryWithRetriesAsync[TResult](String name, EncodedDomainName dnsSafeName, QueryType queryType, Func`4 processResponseFunc, CancellationToken cancellationToken) in /_/src/Microsoft.Extensions.ServiceDiscovery.Dns/Resolver/DnsResolver.cs:line 377

Last 10 failures:

Run date	Test Name
Jun 27 10 PM	[windows] Microsoft.Extensions.ServiceDiscovery.Dns.Resolver.Tests.TcpFailoverTests.TcpFailover_Simple_Success

Summary of the failures

Last 24 hrs	Last 7 days	Last 30 days
1	1	1

-- Updated on 6/27/2025 11:37:09 PM UTC

[radical]

cc @joperezr