I am making an application in Delphi using Indy to make a socket that can be encrypted with TLS. I have an IdTCPServer and an SslHandler connected to it. But I have some clients that can connect via TLS and others that do not support this type of connection because they are very old. I would need to know from my server if at the start of the connection I can identify if the client is connecting with TLS or not.