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

Org.BouncyCastle.Tls.ServerName

public sealed class ServerName
RFC 6066 3. Server Name Indication
namespace Org.BouncyCastle.Tls { public sealed class ServerName { public byte[] NameData { get; } public short NameType { get; } public ServerName(short nameType, byte[] nameData); public void Encode(Stream output); public static ServerName Parse(Stream input); } }