Quarantine RedirectionTest.RedirectStreamingEnhancedPostToExternal

[github-actions]

Failing Test(s)

Microsoft.AspNetCore.Components.E2ETests.ServerRenderingTests.RedirectionTest.RedirectStreamingEnhancedPostToExternal

Error Message

OpenQA.Selenium.WebDriverException : The HTTP request to the remote WebDriver server for URL (localhost/redacted) timed out after 60 seconds.
---- System.Threading.Tasks.TaskCanceledException : The request was canceled due to the configured HttpClient.Timeout of 60 seconds elapsing.
-------- System.TimeoutException : The operation was canceled.
------------ System.Threading.Tasks.TaskCanceledException : The operation was canceled.
---------------- System.IO.IOException : Unable to read data from the transport connection: Operation canceled.
-------------------- System.Net.Sockets.SocketException : Operation canceled

Stacktrace

Stack trace

   at OpenQA.Selenium.Remote.HttpCommandExecutor.ExecuteAsync(Command commandToExecute)
   at OpenQA.Selenium.Remote.DriverServiceCommandExecutor.ExecuteAsync(Command commandToExecute)
   at OpenQA.Selenium.WebDriver.ExecuteAsync(String driverCommandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.WebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
   at OpenQA.Selenium.Window.get_Size()
   at Microsoft.AspNetCore.E2ETesting.BrowserTestBase.InitializeBrowser(String isolationContext) in /mnt/vss/_work/1/s/src/Shared/E2ETesting/BrowserTestBase.cs:line 91
   at Microsoft.AspNetCore.E2ETesting.BrowserTestBase.InitializeAsync(String isolationContext) in /mnt/vss/_work/1/s/src/Shared/E2ETesting/BrowserTestBase.cs:line 78
   at Microsoft.AspNetCore.Components.E2ETests.ServerRenderingTests.RedirectionTest.InitializeAsync() in /mnt/vss/_work/1/s/src/Components/test/E2ETest/ServerRenderingTests/RedirectionTest.cs:line 29
--- End of stack trace from previous location ---
----- Inner Stack Trace -----
   at System.Net.Http.HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
   at OpenQA.Selenium.Remote.HttpCommandExecutor.MakeHttpRequest(HttpRequestInfo requestInfo)
   at OpenQA.Selenium.Remote.HttpCommandExecutor.ExecuteAsync(Command commandToExecute)
----- Inner Stack Trace -----
   at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at OpenQA.Selenium.Remote.HttpCommandExecutor.DiagnosticsHttpHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async)
   at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)

Logs

The failure occurs during InitializeBrowser — the Selenium WebDriver HTTP request times out before the test body executes. This is an infrastructure-level flake in the E2E test environment.

Build

https://dev.azure.com/dnceng-public/public/_build/results?buildId=1436713

Generated by Daily Test Quarantine Management · sonnet46 11.3M · ◷

[github-actions]

Investigation

The test RedirectStreamingEnhancedPostToExternal has failed 2 times in the components-e2e pipeline (definition 87) on the main branch:

• Build 1436713 (May 27, 2026)
• Build 1405887 (May 2, 2026)

Both failures share the same root cause: a Selenium WebDriver HTTP timeout during browser initialization (BrowserTestBase.InitializeBrowser). The WebDriver connection to localhost timed out after 60 seconds, with an underlying SocketException: Operation canceled. The failure occurs in InitializeAsync — before the test body even runs — which strongly indicates an infrastructure-level flake (WebDriver process startup delay, port contention, or OS-level socket cancellation).

The RedirectStreamingEnhancedPostToExternal test itself verifies that submitting a streaming-enhanced form redirects to an external URL. It is unlikely that this specific test's logic is the cause; other tests in RedirectionTest have exhibited the same pattern of WebDriver timeout failures.

No obvious code-level fix is apparent. The test is quarantined to avoid blocking CI while infrastructure reliability is monitored.

Generated by Daily Test Quarantine Management · sonnet46 11.3M · ◷