.net core bad cyrillic symbols

[bloodyroll]

Hi! I am trying to retrieve messages with Pop3Client. In .net core console application there is a problem with cyrillic symbols in MimeMessage objects. Results of last 10 message subjects in console (with Console.OutputEncoding = Encoding.Unicode;):

Subject: ðÒÏÓØÂÁ! Subject: ïÔÐÒÁ×ËÁ: ëÏÎÃÅÐÃÉÑ E3.Hub 2.0.pptx Subject: FW: E3.Series × Wiki. æÏÒÕÍ E3.Series. Subject: ðÅÒÅÈÏÄÎÉË OTG c USB ÎÁ micro USB Subject: ðÅÞÁÌØÎÁÑ ÄÁÔÁ Subject: E3.Series × Wiki. æÏÒÕÍ E3.Series. Subject: [Zuken E3 GmbH] ZDE551435 Answer to [Panel Sheets (errors)] Subject: Анонс DotNext 2017 Moscow Subject: RE: E3.series файл лицензии до 19 июня Subject: ïÔÐÕÓË

The same code result data in .net framework 4.5.2 console app:

Subject: Просьба! Subject: Отправка: Концепция E3.Hub 2.0.pptx Subject: FW: E3.Series в Wiki. Форум E3.Series. Subject: Переходник OTG c USB на micro USB Subject: Печальная дата Subject: E3.Series в Wiki. Форум E3.Series. Subject: [Zuken E3 GmbH] ZDE551435 Answer to [Panel Sheets (errors)] Subject: Анонс DotNext 2017 Moscow Subject: RE: E3.series файл лицензии до 19 июня Subject: Отпуск

Method code is the same:

using (var client = new Pop3Client(new ProtocolLogger("pop3.log")))
            {
                client.ServerCertificateValidationCallback = (s, c, h, e) => true;

                client.Connect("webhost.pointcad.ru", 0, true);
                client.AuthenticationMechanisms.Remove("XOAUTH2");

                client.Authenticate("somedomain/somelogin", "somepassword");

                for (int i = 0; i < 10; i++) 
                {
                    var message = client.GetMessage(client.Count - i - 1);

                    Console.WriteLine("Subject: {0}", message.Subject);
                }
                client.Disconnect(true);
            }

[jstedfast]

This suggests the problem is that your .net core installation does not include the proper text encodings. There's nothing MimeKit can do about that.

To test my theory, write a simple test program that tries to get a cyrilic encoding such as koi8-r:

var encoding = System.Text.Encoding.GetEncoding ("koi8-r");

My bet is that you'll get an exception.

[bloodyroll]

thank you for help. Need to install System.Text.Encoding.CodePages package and add:

Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

[jstedfast]

Thanks for the update, that will likely be helpful to others that run into this issue on .NET Core :)