Custom transports in SecureBlackbox - SecureBlackbox®
So-called "Simple" client classes that offer implementation of popular network protocols (except TElSimpleFTPSClient) have a powerful built-in TCP socket that can connect via Web Tunneling (HTTP CONNECT) and SOCKS proxies, has bandwidth control, supports IPv6 and International Domain Names (IDN) and can use custom DNS servers and DNSSEC.
Still if you need to make the client work via your own socket or even some other communication channel (eg. named pipe or some custom protocol), you can do this! The above mentioned client classes can use events to send and receive data so your application can transfer the data the way you like.