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HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success failure from too many BindIPEndPointDelegate retries #131951

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HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success failure from too many BindIPEndPointDelegate retries#131951
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Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.Net.Httpblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'untriagedNew issue has not been triaged by the area owner

Description

@svick
svick
opened on Aug 6, 2026

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1541017
Build error leg or test failing: System.Net.Tests.HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success
Pull request: #131876

Error Message

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

{
  "ErrorMessage": ["HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success [FAIL]", "OverflowException: Reached the maximum number of BindIPEndPointDelegate retries."],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}
  Starting:    System.Net.Requests.Tests (parallel test collections = on [2 threads], stop on fail = off)
    System.Net.Tests.FtpWebRequestTest.Ftp_AppendFile [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_RenameFile [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_Ignore_NewLine_GetRequestStream_And_GetResponse_Throws_FormatException_As_InnerException [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_NewLineInRenameTo_GetResponse_Throws_FormatException_As_InnerException [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_LargeFile [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_CreateAndDelete [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_RenameFileSubDir_Success [SKIP]
      Condition(s) not met: "LocalServerAvailable"
    System.Net.Tests.FtpWebRequestTest.Ftp_MakeAndRemoveDir_Success [SKIP]
      Condition(s) not met: "LocalServerAvailable"
Unhandled exception. System.Net.WebException: Reached the maximum number of BindIPEndPointDelegate retries. (127.0.0.1:52729)
 ---> System.Net.Http.HttpRequestException: Reached the maximum number of BindIPEndPointDelegate retries. (127.0.0.1:52729)
 ---> System.OverflowException: Reached the maximum number of BindIPEndPointDelegate retries.
   at System.Net.HttpWebRequest.<CreateHttpClient>g__BindHelper|224_4(ServicePoint servicePoint, IPAddress[]& addresses, Socket socket, Int32 port) in /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs:line 1847
   at System.Net.HttpWebRequest.<>c__DisplayClass224_0.<CreateHttpClient>b__1(SocketsHttpConnectionContext context, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs:line 1813
   at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, Int64 connectionId, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs:line 693
   --- End of inner exception stack trace ---
   at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, Int64 connectionId, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs:line 726
   at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, Boolean isForHttp2, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs:line 595
   at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.Http1.cs:line 296
   at System.Net.Http.HttpConnectionPool.InjectNewHttp11ConnectionAsync(QueueItem queueItem) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.Http1.cs:line 265
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result) in /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs:line 139
   at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskCompletionSourceWithCancellation.cs:line 21
   at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs:line 495
   at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs:line 21
   at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs:line 21
   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/RedirectHandler.cs:line 29
   at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs:line 21
   at System.Net.Http.SocketsHttpHandler.<SendAsync>g__CreateHandlerAndSendAsync|119_0(HttpRequestMessage request, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocketsHttpHandler.cs:line 668
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/HttpClient.cs:line 544
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result) in /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs:line 139
   at System.Net.HttpWebRequest.HandleResponse(Boolean async) in /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs:line 1281
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) in /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs:line 1455
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) in /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs:line 1459
   at System.Net.WebRequest.<>c.<GetResponseAsync>b__68_1(IAsyncResult iar) in /_/src/libraries/System.Net.Requests/src/System/Net/WebRequest.cs:line 536
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskFactory_T.cs:line 508
--- End of stack trace from previous location ---
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result) in /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs:line 139
   at System.Net.WebRequest.GetResponseAsync() in /_/src/libraries/System.Net.Requests/src/System/Net/WebRequest.cs:line 534
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result) in /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs:line 139
   at System.Net.Tests.HttpWebRequestTest.<>c__DisplayClass159_0.<SendHttpRequest_BindIPEndPoint_Success>b__1(Uri uri) in /_/src/libraries/System.Net.Requests/tests/HttpWebRequestTest.cs:line 2444
   at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 119
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 89
   at System.Net.Test.Common.LoopbackServer.<>c__DisplayClass15_0.<CreateClientAndServerAsync>b__0(LoopbackServer server) in /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs:line 123
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult(Task task, Byte& result) in /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs:line 131
   at System.Net.Test.Common.LoopbackServer.CreateServerAsync(Func`2 funcAsync, Options options) in /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs:line 107
   at System.Net.Tests.HttpWebRequestTest.<>c.<SendHttpRequest_BindIPEndPoint_Success>b__159_0(String async) in /_/src/libraries/System.Net.Requests/tests/HttpWebRequestTest.cs:line 2438
   at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args) in /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs:line 65
--- End of stack trace from previous location ---
   at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args) in /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs:line 97
    System.Net.Tests.HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success [FAIL]
      Microsoft.DotNet.RemoteExecutor.RemoteExecutionException : Remote process failed with an unhandled exception.
      Stack Trace:
        
        Child exception:
          System.Net.WebException: Reached the maximum number of BindIPEndPointDelegate retries. (127.0.0.1:52729)
         ---> System.Net.Http.HttpRequestException: Reached the maximum number of BindIPEndPointDelegate retries. (127.0.0.1:52729)
         ---> System.OverflowException: Reached the maximum number of BindIPEndPointDelegate retries.
        /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs(1847,0): at System.Net.HttpWebRequest.<CreateHttpClient>g__BindHelper|224_4(ServicePoint servicePoint, IPAddress[]& addresses, Socket socket, Int32 port)
        /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs(1813,0): at System.Net.HttpWebRequest.<>c__DisplayClass224_0.<CreateHttpClient>b__1(SocketsHttpConnectionContext context, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(693,0): at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, Int64 connectionId, CancellationToken cancellationToken)
           --- End of inner exception stack trace ---
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(726,0): at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String host, Int32 port, HttpRequestMessage initialRequest, Boolean async, Int64 connectionId, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(595,0): at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, Boolean isForHttp2, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.Http1.cs(296,0): at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.Http1.cs(265,0): at System.Net.Http.HttpConnectionPool.InjectNewHttp11ConnectionAsync(QueueItem queueItem)
        /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
        /_/src/libraries/Common/src/System/Threading/Tasks/TaskCompletionSourceWithCancellation.cs(21,0): at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectionPool/HttpConnectionPool.cs(495,0): at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs(21,0): at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs(21,0): at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/RedirectHandler.cs(29,0): at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpMessageHandlerStage.cs(21,0): at System.Net.Http.HttpMessageHandlerStage.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocketsHttpHandler.cs(668,0): at System.Net.Http.SocketsHttpHandler.<SendAsync>g__CreateHandlerAndSendAsync|119_0(HttpRequestMessage request, CancellationToken cancellationToken)
        /_/src/libraries/System.Net.Http/src/System/Net/Http/HttpClient.cs(544,0): at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
        /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
        /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs(1281,0): at System.Net.HttpWebRequest.HandleResponse(Boolean async)
        /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs(1455,0): at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
           --- End of inner exception stack trace ---
        /_/src/libraries/System.Net.Requests/src/System/Net/HttpWebRequest.cs(1459,0): at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
        /_/src/libraries/System.Net.Requests/src/System/Net/WebRequest.cs(536,0): at System.Net.WebRequest.<>c.<GetResponseAsync>b__68_1(IAsyncResult iar)
        /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskFactory_T.cs(508,0): at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
        --- End of stack trace from previous location ---
        /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
        /_/src/libraries/System.Net.Requests/src/System/Net/WebRequest.cs(534,0): at System.Net.WebRequest.GetResponseAsync()
        /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(139,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
        /_/src/libraries/System.Net.Requests/tests/HttpWebRequestTest.cs(2444,0): at System.Net.Tests.HttpWebRequestTest.<>c__DisplayClass159_0.<SendHttpRequest_BindIPEndPoint_Success>b__1(Uri uri)
        /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(119,0): at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task)
        --- End of stack trace from previous location ---
        /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(89,0): at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks)
        /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs(123,0): at System.Net.Test.Common.LoopbackServer.<>c__DisplayClass15_0.<CreateClientAndServerAsync>b__0(LoopbackServer server)
        /_/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeAsyncTaskContinuation.cs(131,0): at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult(Task task, Byte& result)
        /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs(107,0): at System.Net.Test.Common.LoopbackServer.CreateServerAsync(Func`2 funcAsync, Options options)
        /_/src/libraries/System.Net.Requests/tests/HttpWebRequestTest.cs(2438,0): at System.Net.Tests.HttpWebRequestTest.<>c.<SendHttpRequest_BindIPEndPoint_Success>b__159_0(String async)
        /_/src/arcade/src/Microsoft.DotNet.RemoteExecutor/src/Program.cs(65,0): at Microsoft.DotNet.RemoteExecutor.Program.Main(String[] args)
        
        Child process:
          System.Net.Requests.Tests, Version=11.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51 System.Net.Tests.HttpWebRequestTest+<>c System.Threading.Tasks.Task <SendHttpRequest_BindIPEndPoint_Success>b__159_0(System.String)
        
        Child arguments:
          True
        
  Finished:    System.Net.Requests.Tests

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1541017
Error message validated: [HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success [FAIL] OverflowException: Reached the maximum number of BindIPEndPointDelegate retries.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/6/2026 3:44:52 PM UTC

Report

Build Repository Test Pull Request
1542456 dotnet/runtime System.Net.Tests.HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success #131932
1541017 dotnet/runtime System.Net.Tests.HttpWebRequestTest_Async.SendHttpRequest_BindIPEndPoint_Success #131876

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    Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.Net.Httpblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'untriagedNew issue has not been triaged by the area owner

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