Приложение .NET 4.8, работающее в Windows 10 (версия 10.0.19041) с включенным TLS 1.3, с использованием реестра согласно как включить TLS 1.3 в Windows 10
Однако выполняется следующий код:
try
{
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls13;
using (var client = new WebClient())
{
var img = client.DownloadData("URL of an image - Only TLS 1.3 at client side - removed for privacy purposes");
MemoryStream ms = new MemoryStream(img);
Image i = Image.FromStream(ms);
i.Save(AppDomain.CurrentDomain.BaseDirectory+"/img1.jpeg");
}
}
catch(Exception ex)
{
logger.Log(LogLevel.Error, ex.ToString());
}
Выдает следующее - Exception StackTrace:
2020-10-05 12:40:52.4779 ERROR System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Cannot determine the frame size or a corrupted frame was received.
at System.Net.Security._SslStream.StartFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.TlsStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead)
Я обнаружил связанную проблему с .NET 5.0, однако я не вижу, будет ли она исправлена или будет исправлена для .NET 4.8 https://github.com/dotnet/runtime/issues/1720