Internet Direct (Indy) Version 9.0.1 Beta
TIdTunnelSlave.Socks4
Indicates that the server uses Socks authentication for client connections.

property Socks4: Boolean;
Description
Socks4 is a Boolean property that indicates that the server uses Socks authentication for newly established client connections.

When Sock4 is True, a new client connection may contain the Socks version, OpCode, Port number and IP Address for the Socks proxy, as well as the null-terminated Socks user ID. A Socks response is written to the client connection using the Socks OpCode 90.

When Sock4 is False, the client connection uses the DefaultPort for the server.