[Unified] Error pre-validating against SSO service

[Entrepreneur-AJ]

Steps To Reproduce

1. Follow the tutorial on https://bitwarden.com/help/saml-keycloak/ (Needs updating)
2. Open incognito/private window
3. Try to login via SSO

Expected Result

Should redirect to Keycloak for authentication and redirect back (I'm kerberos enabled)

Actual Result

Red error box pops up on screen saying Error pre-validating against SSO service.

Loading spinner keeps spinning.

Screenshots or Videos

Additional Context

Logs from docker:

fail: Bit.Identity.Controllers.SsoController[0]
=> SpanId:5f02e6c46dc1eb02, TraceId:fd52673c93ea7b154b0fe56161b4ab48, ParentId:0000000000000000 => ConnectionId:0HMSU72UBRP6A => RequestPath:/identity/account/prevalidate RequestId:0HMSU72UBRP6A:00000002 => Bit.Identity.Controllers.SsoController.PreValidate (Identity)
Error pre-validating against SSO service
System.Net.Http.HttpRequestException: Cannot assign requested address (localhost:5007)
---> System.Net.Sockets.SocketException (99): Cannot assign requested address
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.g__WaitForConnectWithCancellation|277_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(HttpRequestMessage request)
at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.GetHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at Microsoft.Extensions.Http.Logging.LoggingScopeHttpMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
at Bit.Identity.Controllers.SsoController.PreValidate(String domainHint) in /source/src/Identity/Controllers/SsoController.cs:line 59

Githash Version

9b00758-dirty

Environment Details

• Server Type: VPS (Vultr)
• vCPU/s: 1 vCPU
• RAM: 2048.00 MB
• Storage: 50 GB NVMe
• IPv4 Address: True
• IPv6 Address: True
• Operating System: Fedora 38 Minimal (No GUI)
• Container: Docker (Standalone)
• Firewall: CSF Firewall
• DNS Resolver: Unbound
• Additional Software: Grafana Agent (Logging & Monitoring)

Database Image

Seperate VPS same specs as Environment Details without Docker
PostgreSQL version 15.1-2

Issue-Link

#2480

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.

[Entrepreneur-AJ]

As a note this instance is not yet in use still trying to setup so it's safe to play around with that and keycloak if need be