Closed
Description
Test classes affected:
System.Net.Http.Functional.Tests.SocksProxyTest_Http1_SyncSystem.Net.Http.Functional.Tests.SocksProxyTest_Http1_AsyncSystem.Net.Http.Functional.Tests.SocksProxyTest_Http2
Failed tests 5/21-9/3 (incl. PRs):
| Day | Run | OS | Test type | Failure |
|---|---|---|---|---|
| 6/24 | PR #54676 | Debian.10.Amd64.Open | SocksProxyTest_Http1_Sync | |
| 6/26 | PR #54636 | Debian.10.Amd64.Open | SocksProxyTest_Http1_Sync | |
| 6/29 | 2x PR #52237 | Alpine.312.Amd64.Open | both | TimeoutException : The operation has timed out. |
| 7/1 | 20x misc PRs | 16x Alpine.312.Amd64.Open + 4x SLES.15.Amd64.Open | misc | TimeoutException : The operation has timed out. |
| 7/8 | PR #55292 | Alpine.312.Amd64.Open | SocksProxyTest_Http2 | TimeoutException : The operation has timed out. |
| 7/16 | Official run | SLES.12.Amd64.Open | SocksProxyTest_Http1_Async | SocketException : Connection reset by peer |
| 7/20 | PR #53949 | Alpine.312.Amd64.Open | SocksProxyTest_Http2 | TimeoutException : The operation has timed out. |
| 7/21 | Official run | Centos.8.Amd64.Open | SocksProxyTest_Http1_Async | SocketException : Connection reset by peer |
| 7/21 | Official run | Centos.8.Amd64.Open | SocksProxyTest_Http1_Async | SocketException : Connection reset by peer |
| 7/23 | PR #56013 | SLES.15.Amd64.Open | SocksProxyTest_Http1_Async | SocketException : Connection reset by peer |
| 7/28 | PR #56316 | RedHat.7.Amd64.Open | SocksProxyTest_Http1_Sync | TimeoutException : The operation has timed out. |
| 7/28 | PR #56316 | RedHat.7.Amd64.Open | SocksProxyTest_Http2 | TimeoutException : The operation has timed out. |
| 8/6 | PR #57002 | SLES.15.Amd64.Open | SocksProxyTest_Http1_Async | HttpRequestException : Received an invalid status line: 'HTTP/2.0 400 Bad Request'. |
| 8/6 | PR #57002 | SLES.15.Amd64.Open | SocksProxyTest_Http2 | Exception : HTTP/1.1 request sent to HTTP/2 connection |
| 8/10 | PR #56787 | Debian.10.Amd64.Open | SocksProxyTest_Http2 | SocketException : Connection reset by peer |
| 8/14 | PR #57421 | Windows.10.Amd64.Server19H1.Open | SocksProxyTest_Http1_Async | TimeoutException : The operation has timed out. |
| 8/27 | PR #57088 | SLES.15.Amd64.Open | SocksProxyTest_Http1_Async | HttpRequestException : Received an invalid status line: 'HTTP/2.0 400 Bad Request'. |
| 8/27 | PR #57088 | SLES.15.Amd64.Open | SocksProxyTest_Http2 | Exception : HTTP/1.1 request sent to HTTP/2 connection |
| 9/2 | Official run - release/6.0 | Debian.9.Amd64.Open | SocksProxyTest_Http2 | Http2ConnectionException : The HTTP/2 server sent invalid data on the connection. |
| 9/2 | Official run - release/6.0 | Debian.9.Amd64.Open | SocksProxyTest_Http1_Sync | TimeoutException : The operation has timed out. |
| 9/3 | PR #58199 | 434x failures - unrelated PR-only failures |
Failure SocketException : Connection reset by peer:
System.Net.Http.HttpRequestException : An error occurred while sending the request.
---- System.IO.IOException : Unable to read data from the transport connection: Connection reset by peer.
-------- System.Net.Sockets.SocketException : Connection reset by peer
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 817
at System.Net.Http.HttpConnectionPool.SendUsingHttp11Async(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 981
at System.Net.Http.HttpConnectionPool.DetermineVersionAndSendAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1015
at System.Net.Http.HttpConnectionPool.SendAndProcessAltSvcAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1028
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1038
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 30
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 553
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c__DisplayClass3_0.<<TestLoopbackAsync>b__0>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 60
--- 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 55
at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 82
at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass5_0.<<CreateClientAndServerAsync>b__0>d.MoveNext() in /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs:line 39
--- End of stack trace from previous location ---
at System.Net.Test.Common.LoopbackServer.CreateServerAsync(Func`2 funcAsync, Options options) in /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs:line 103
at System.Net.Http.Functional.Tests.SocksProxyTest.TestLoopbackAsync(String scheme, Boolean useSsl, Boolean useAuth, String host) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 67
--- End of stack trace from previous location ---
----- Inner Stack Trace -----
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource<System.Int32>.GetResult(Int16 token) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1267
at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 1593
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 580
----- Inner Stack Trace -----
Alternative failure SocketException : Connection reset by peer (SocksProxyTest_Http2):
System.Net.Http.HttpRequestException : The SSL connection could not be established, see inner exception.
---- System.IO.IOException : Unable to read data from the transport connection: Connection reset by peer.
-------- System.Net.Sockets.SocketException : Connection reset by peer
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectHelper.cs:line 92
at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1389
at System.Net.Http.HttpConnectionPool.AddHttp2ConnectionAsync(HttpRequestMessage request) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 624
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.GetHttp2ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 778
at System.Net.Http.HttpConnectionPool.TrySendUsingHttp2Async(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 943
at System.Net.Http.HttpConnectionPool.DetermineVersionAndSendAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 991
at System.Net.Http.HttpConnectionPool.SendAndProcessAltSvcAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1008
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1027
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 30
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 527
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c__DisplayClass3_0.<<TestLoopbackAsync>b__0>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 56
--- End of stack trace from previous location ---
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c__DisplayClass3_0.<<TestLoopbackAsync>b__0>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 58
--- 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 64
at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 91
at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass5_0.<<CreateClientAndServerAsync>b__0>d.MoveNext() in /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs:line 38
--- End of stack trace from previous location ---
at System.Net.Test.Common.Http2LoopbackServerFactory.CreateServerAsync(Func`3 funcAsync, Int32 millisecondsTimeout, GenericLoopbackOptions options) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 229
at System.Net.Http.Functional.Tests.SocksProxyTest.TestLoopbackAsync(String scheme, Boolean useSsl, Boolean useAuth, String host) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 37
--- End of stack trace from previous location ---
----- Inner Stack Trace -----
at System.Net.Sockets.NetworkStream.Read(Span`1 buffer) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/NetworkStream.cs:line 258
at System.Net.Security.SyncReadWriteAdapter.ReadAsync(Memory`1 buffer) in /_/src/libraries/System.Net.Security/src/System/Net/Security/ReadWriteAdapter.cs:line 53
at System.Net.Security.SslStream.FillHandshakeBufferAsync[TIOAdapter](TIOAdapter adapter, Int32 minSize) in /_/src/libraries/System.Net.Security/src/System/Net/Security/SslStream.Implementation.cs:line 1079
at System.Net.Security.SslStream.ReceiveBlobAsync[TIOAdapter](TIOAdapter adapter) in /_/src/libraries/System.Net.Security/src/System/Net/Security/SslStream.Implementation.cs:line 462
at System.Net.Security.SslStream.ForceAuthenticationAsync[TIOAdapter](TIOAdapter adapter, Boolean receiveFirst, Byte[] reAuthenticationData, Boolean isApm) in /_/src/libraries/System.Net.Security/src/System/Net/Security/SslStream.Implementation.cs:line 381
at System.Net.Security.SslStream.AuthenticateAsClient(SslClientAuthenticationOptions sslClientAuthenticationOptions) in /_/src/libraries/System.Net.Security/src/System/Net/Security/SslStream.cs:line 296
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectHelper.cs:line 74
----- Inner Stack Trace -----
at System.Net.Sockets.Socket.Receive(Span`1 buffer, SocketFlags socketFlags) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 1500
at System.Net.Sockets.NetworkStream.Read(Span`1 buffer) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/NetworkStream.cs:line 254
Alternative failure Exception : HTTP/1.1 request sent to HTTP/2 connection.:
System.Exception : HTTP/1.1 request sent to HTTP/2 connection.
at System.Net.Test.Common.Http2LoopbackConnection.ReadPrefixAsync() in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackConnection.cs:line 107
at System.Net.Test.Common.Http2LoopbackConnection.CreateAsync(SocketWrapper socket, Stream stream, Http2Options httpOptions, TimeSpan timeout) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackConnection.cs:line 82
at System.Net.Test.Common.Http2LoopbackServer.AcceptConnectionAsync(Nullable`1 timeout) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 95
at System.Net.Test.Common.Http2LoopbackServer.EstablishConnectionGetSettingsAsync(Nullable`1 timeout, Nullable`1 ackTimeout, SettingsEntry[] settingsEntries) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 126
at System.Net.Test.Common.Http2LoopbackServer.EstablishConnectionAsync(Nullable`1 timeout, Nullable`1 ackTimeout, SettingsEntry[] settingsEntries) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 115
at System.Net.Test.Common.Http2LoopbackServer.HandleRequestAsync(HttpStatusCode statusCode, IList`1 headers, String content) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 147
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c.<<TestLoopbackAsync>b__3_1>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 60
--- 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 64
at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 91
at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass5_0.<<CreateClientAndServerAsync>b__0>d.MoveNext() in /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs:line 38
--- End of stack trace from previous location ---
at System.Net.Test.Common.Http2LoopbackServerFactory.CreateServerAsync(Func`3 funcAsync, Int32 millisecondsTimeout, GenericLoopbackOptions options) in /_/src/libraries/Common/tests/System/Net/Http/Http2LoopbackServer.cs:line 229
at System.Net.Http.Functional.Tests.SocksProxyTest.TestLoopbackAsync(String scheme, Boolean useSsl, Boolean useAuth, String host) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 37
--- End of stack trace from previous location ---
Alternative failure HttpRequestException : Received an invalid status line: 'HTTP/2.0 400 Bad Request'.:
System.Net.Http.HttpRequestException : Received an invalid status line: 'HTTP/2.0 400 Bad Request'.
at System.Net.Http.HttpConnection.ParseStatusLine(ReadOnlySpan`1 line, HttpResponseMessage response) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 986
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 599
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnection.cs:line 820
at System.Net.Http.HttpConnectionPool.SendUsingHttp11Async(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 964
at System.Net.Http.HttpConnectionPool.DetermineVersionAndSendAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1003
at System.Net.Http.HttpConnectionPool.SendAndProcessAltSvcAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1008
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1027
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 30
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 527
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c__DisplayClass3_0.<<TestLoopbackAsync>b__0>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 56
--- End of stack trace from previous location ---
at System.Net.Http.Functional.Tests.SocksProxyTest.<>c__DisplayClass3_0.<<TestLoopbackAsync>b__0>d.MoveNext() in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 58
--- 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 64
at System.Threading.Tasks.TaskTimeoutExtensions.WhenAllOrAnyFailed(Task[] tasks) in /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs:line 91
at System.Net.Test.Common.LoopbackServerFactory.<>c__DisplayClass5_0.<<CreateClientAndServerAsync>b__0>d.MoveNext() in /_/src/libraries/Common/tests/System/Net/Http/GenericLoopbackServer.cs:line 38
--- End of stack trace from previous location ---
at System.Net.Test.Common.LoopbackServer.CreateServerAsync(Func`2 funcAsync, Options options) in /_/src/libraries/Common/tests/System/Net/Http/LoopbackServer.cs:line 101
at System.Net.Http.Functional.Tests.SocksProxyTest.TestLoopbackAsync(String scheme, Boolean useSsl, Boolean useAuth, String host) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 37
--- End of stack trace from previous location ---
Alternative failure TimeoutException : The operation has timed out.:
System.TimeoutException : The operation has timed out.
at System.Net.Http.Functional.Tests.SocksProxyTest.TestLoopbackAsync(String scheme, Boolean useSsl, Boolean useAuth, String host) in /_/src/libraries/System.Net.Http/tests/FunctionalTests/SocksProxyTest.cs:line 37
--- End of stack trace from previous location ---
Alternative failure Http2ConnectionException : The HTTP/2 server sent invalid data on the connection.
System.Net.Http.HttpRequestException : An error occurred while sending the request.
---- System.IO.IOException : The request was aborted.
-------- System.Net.Http.Http2ConnectionException : The HTTP/2 server sent invalid data on the connection. HTTP/2 error code 'PROTOCOL_ERROR' (0x1).