System.InvalidCastException on ImapClient.Authenticate

[Miraichi]

Auth and get Exception System.InvalidCastException
Message from Exception: Unable to cast object of type "System.Char" to type "System.String".

Protocol Log

[Test] Connecting..
Connected to imaps://imap.qq.com:993/
S: * OK [CAPABILITY IMAP4 IMAP4rev1 ID AUTH=LOGIN NAMESPACE] QQMail IMAP4Server ready
[Test] Connected: True
C: A00000000 ID ("command" "ID" "name" "com.tencent.foxmail" "version" "7.2.9.79" "os" "windows" "os-version" "6.1" "vendor" "tencent limited")
S: * ID NIL
S: A00000000 OK ID completed
[Test] Authenticating..
C: A00000001 AUTHENTICATE LOGIN
S: + VXNlciBOYW1lAA==
C: cmVtaXhrQHFxLmNvbQ==
S: + UGFzc3dvcmQA
C: NDYxMjIwNQ==
S: A00000001 NO ╟ы╩╣╙├╩┌╚и┬ы╡╟┬╝бг╧ъ╟щ╟ы┐┤: http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256

[jstedfast]

I need a stacktrace of the exception

[jstedfast]

I can't reproduce any InvalidCastException in MailKit by connecting to imap.qq.com and sending an invalid username and password. You must have a bug in your own code somewhere.

[Miraichi]

StackTrace:

   в MailKit.Net.Imap.ImapCommand.<StepAsync>d__83.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в MailKit.Net.Imap.ImapEngine.<IterateAsync>d__170.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в MailKit.Net.Imap.ImapEngine.<RunAsync>d__171.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   в MailKit.Net.Imap.ImapClient.<AuthenticateAsync>d__84.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в MailKit.Net.Imap.ImapClient.Authenticate(Encoding encoding, ICredentials credentials, CancellationToken cancellationToken)
   в MailKit.MailService.Authenticate(Encoding encoding, String userName, String password, CancellationToken cancellationToken)
   в MailKit.MailService.Authenticate(String userName, String password, CancellationToken cancellationToken)
   в Tester.Program.IMAPKA() в C:\Users\Defest\source\repos\Tester\Tester\Program.cs:строка 61

[Miraichi]

You must have a bug in your own code somewhere.

About this... Its large code for MailKit? :D

[jstedfast]

You can use the MyGet download link displayed on the main GitHub page to test this fix out in about 30 minutes or so when CI publishes the build.