SSH.NET: Server identification problem in NETStandart 2.0

Renci.SshNet.Common.SshConnectionException: "Server response does not contain SSH protocol identification." - VS 2017, causes only using UWP with NETStandart 2.0, but on UWP with NETCore there were no problems. After 2,5 hours of testing I`ve found out that problem is in timeouts of Session/ Could you fix it up?

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 55 (14 by maintainers)

Most upvoted comments

2020.0.0-beta1 is now available, and includes this fix.

drieseng on Jun 7, 2020

Any updates on solving this?

M1XGear on Sep 18, 2019

I have the same issue using SSH.NET within my Azure Function deployed to Microsoft Azure. I use this library to check each minute for new files to download them and move them to another folder (just small text files).

It works for about 1-3 days and then it stops working until I stop and start the Function again.

I’m using SSH.NET version 2016.1.0 in my .NET Core 3.1 project.

Maybe this information helps resolving the issue.

“Just my code” stack trace: Microsoft.Azure.WebJobs.Host.FunctionInvocationException: at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<ExecuteWithLoggingAsync>d__19.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 322) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<TryExecuteAsyncCore>d__16.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 117) Inner exception Renci.SshNet.Common.SshConnectionException handled at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw: at Renci.SshNet.Session.Connect (Renci.SshNet, Version=2016.1.0.0, Culture=neutral, PublicKeyToken=1cee9f8bde3db106) at Renci.SshNet.BaseClient.Connect (Renci.SshNet, Version=2016.1.0.0, Culture=neutral, PublicKeyToken=1cee9f8bde3db106) at MyNamespace.MyClass.Receive (MyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\MySourcecontrol\Functions\MyNamespace\MyClass.csMyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 40) at MyNamespace.MyClass.Run (MyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullMyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\MySourcecontrol\Functions\MyNamespace\MyClass.csMyNamespace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 29) at lambda_method (Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null) at Microsoft.Azure.WebJobs.Host.Executors.VoidMethodInvoker2.InvokeAsync (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\VoidMethodInvoker.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 20) at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker2+<InvokeAsync>d__10.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 52) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<InvokeAsync>d__27.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 585) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<ExecuteWithWatchersAsync>d__26.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 532) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<ExecuteWithLoggingAsync>d__25.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 468) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<ExecuteWithLoggingAsync>d__19.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.16.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 278)

dudi-dev on Apr 6, 2020

I am experiencing this issue too, I’m using 2016.1.0 from NuGet, and building a UWP app against Fall Creators Update. I get failed SFTP connections on both my Linux server and Mac server. Both work fine with my other SFTP clients.

Version 2013.4.7 from NuGet doesn’t have the problem, but I don’t really want to drop back to such and old version.

theescapers on Jan 22, 2018