MySqlConnection.OpenAsync() throws IndexOutOfRangeException

[marton200472]

Software versions
MySqlConnector version: 2.1.2
Server type (MySQL, MariaDB, Aurora, etc.) and version: MariaDB 10.4.17
.NET version: .NET Standard 2.0

Describe the bug
MySqlConnection.OpenAsync() throws IndexOutOfRangeException.

Exception

{System.IndexOutOfRangeException: Index was outside the bounds of the array.
  at MySqlConnector.Protocol.PayloadData.get_HeaderByte () [0x00000] in /_/src/MySqlConnector/Protocol/PayloadData.cs:22 
  at MySqlConnector.Core.ServerSession.ReceiveReplyAsync (MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x00076] in /_/src/MySqlConnector/Core/ServerSession.cs:928 
  at MySqlConnector.Core.ServerSession.ReceiveAsync (MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x0000b] in /_/src/MySqlConnector/Core/ServerSession.cs:905 
  at MySqlConnector.Core.ServerSession.ConnectAsync (MySqlConnector.Core.ConnectionSettings cs, MySqlConnector.MySqlConnection connection, System.Int32 startTickCount, MySqlConnector.Core.ILoadBalancer loadBalancer, MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x0035a] in /_/src/MySqlConnector/Core/ServerSession.cs:441 
  at MySqlConnector.Core.ConnectionPool.ConnectSessionAsync (MySqlConnector.MySqlConnection connection, System.String logMessage, System.Int32 startTickCount, MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x000bc] in /_/src/MySqlConnector/Core/ConnectionPool.cs:363 
  at System.Threading.Tasks.ValueTask`1[TResult].get_Result () [0x0001b] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Threading/Tasks/ValueTask.cs:813 
  at MySqlConnector.Core.ConnectionPool.GetSessionAsync (MySqlConnector.MySqlConnection connection, System.Int32 startTickCount, MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x00519] in /_/src/MySqlConnector/Core/ConnectionPool.cs:94 
  at MySqlConnector.Core.ConnectionPool.GetSessionAsync (MySqlConnector.MySqlConnection connection, System.Int32 startTickCount, MySqlConnector.Protocol.Serialization.IOBehavior ioBehavior, System.Threading.CancellationToken cancellationToken) [0x00767] in /_/src/MySqlConnector/Core/ConnectionPool.cs:124 
  at System.Threading.Tasks.ValueTask`1[TResult].get_Result () [0x0001b] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Threading/Tasks/ValueTask.cs:813 
  at MySqlConnector.MySqlConnection.CreateSessionAsync (MySqlConnector.Core.ConnectionPool pool, System.Int32 startTickCount, System.Nullable`1[T] ioBehavior, System.Threading.CancellationToken cancellationToken) [0x00120] in /_/src/MySqlConnector/MySqlConnection.cs:915 
  at System.Threading.Tasks.ValueTask`1[TResult].get_Result () [0x0001b] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Threading/Tasks/ValueTask.cs:813 
  at MySqlConnector.MySqlConnection.OpenAsync (System.Nullable`1[T] ioBehavior, System.Threading.CancellationToken cancellationToken) [0x0012e] in /_/src/MySqlConnector/MySqlConnection.cs:406 
  at GanzkkautotoltoDBManager.Data.DatabaseManager.InsertDataRow (System.String brand, System.Boolean[] answers) [0x00041] in C:\Users\User\source\repos\GanzkkautotoltoDBManager\GanzkkautotoltoDBManager\GanzkkautotoltoDBManager\Data\DatabaseManager.cs:45 }

Code sample

MySqlConnection DBConnection=new MySqlConnection("Server= 10.0.2.2; Port= 3306; User= Kutato_1; Password= abcd; Database= ganzkkautotolto;");
await DBConnection.OpenAsync();

Expected behavior
I expected the method not to throw an exception.

Additional context
The synchronous version does not throw the exception.

Edit:
I am using Xamarin.Forms. Could the mono runtime cause the problem?

[bgrainger]

See also https://stackoverflow.com/questions/70685738/mysqlconnector-mysqlconnection-openasync-not-working

[marton200472]

Yes, I also asked on Stackoverflow.

[bgrainger]

I am using Xamarin.Forms. Could the mono runtime cause the problem?

This seems very likely, since this is an unusual bug, you are observing it on Xamarin Android, and no one has reported it from any other platform.