SOLVED: Mac self-hosted action stopped connecting to job server in the last week

[bwilliams-sequence]

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Sometime in the last week our self-hosted github action stopped working. It fails once it receives a job. It says that it is starting a job but then no further to the terminal. Digging into the logs, I can see that the problem is the worker is unable to connect to the server:

[2025-01-16 22:41:52Z INFO JobRunner] Creating job server with URL: https://pipelinesghubeus5.actions.githubusercontent.com/Eobfuscated8/
[2025-01-16 22:41:52Z INFO GitHubActionsService] Starting operation Location.GetConnectionData
[2025-01-16 22:41:53Z INFO Worker] Listening for cancel message from the channel.
[2025-01-16 22:41:53Z INFO Worker] Waiting for the job to complete or for a cancel message from the channel.
[2025-01-16 22:41:55Z ERR  GitHubActionsService] GET request to https://pipelinesghubeus5.actions.githubusercontent.com/Eobfuscated8/_apis/connectionData?connectOptions=1&lastChangeId=4710403&lastChangeId64=4710403 failed. System.Net.Http.HttpRequestException: Connection refused (pipelinesghubeus5.actions.githubusercontent.com:443)
 ---> System.Net.Sockets.SocketException (61): Connection refused
   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 System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(QueueItem queueItem)
   at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
   at System.Net.Http.AuthenticationHelper.SendWithAuthAsync(HttpRequestMessage request, Uri authUri, Boolean async, ICredentials credentials, Boolean preAuthenticate, Boolean isProxyAuth, Boolean doRequestAuth, HttpConnectionPool pool, CancellationToken cancellationToken)
   at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at GitHub.Services.Common.VssHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at GitHub.Services.Common.VssHttpRetryMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)

Running curl on that URL, I also am unable to connect to the server, however if I run nmap to the server, it sees that it can be reached:

nmap -p 443 pipelinesghubeus5.actions.githubusercontent.com
Starting Nmap 7.95 ( https://nmap.org ) at 2025-01-16 14:49 PST
Nmap scan report for pipelinesghubeus5.actions.githubusercontent.com (192.168.4.1)
Host is up (0.00071s latency).
Other addresses for pipelinesghubeus5.actions.githubusercontent.com (not scanned): fd36:5fef:1172:1::1

PORT    STATE    SERVICE
443/tcp filtered https

Nmap done: 1 IP address (1 host up) scanned in 0.24 seconds

We are running our action on a M2 Mac Mini. Our runner was installed on 14.7.2 when it was last running, and I have tried updating to 15.2. I have also tried making a new action worker, and even did so a third time, configuring it without TLS.

Does anyone have advice?

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[abrowne2]

Have seen this happen as well.

[bwilliams-sequence]

We figured it out. Our router, an eero max 7, had a recent update which saw the github action as an insecure application and blocked it. We disabled all of the router's built-in security features and our worker started running again.