<PackageReference Include="BouncyCastle.Cryptography" Version="2.6.2" />

TlsNoCloseNotifyException

This exception will be thrown (only) when the connection is closed by the peer without sending a close_notifyclose_notify warning alert.
using System; using System.IO; using System.Runtime.Serialization; namespace Org.BouncyCastle.Tls { [Serializable] public class TlsNoCloseNotifyException : EndOfStreamException { public TlsNoCloseNotifyException() : base("No close_notify alert received before connection closed") { } protected TlsNoCloseNotifyException(SerializationInfo info, StreamingContext context) : base(info, context) { } } }