If you meant a specific library or different term, just let me know and I will rewrite the post for you. Remember Telnet?
That's it. 15 lines of Lisp, and you have a protocol server. You might think: "A loop that reads and writes? Python can do that." lisp tlen
;;; tlen.lisp - A minimalist Telnet echo server (require :usocket) ; A portable socket library (defun handle-client (stream) "Echo back whatever the client sends, but shout it in uppercase." (loop :for line = (read-line stream nil) :while line :do (write-line (string-upcase line) stream) (force-output stream))) If you meant a specific library or different
And Lisp? Lisp is the perfect knife for cutting through that stream. Modern APIs are obsessed with structure. GraphQL schemas, Protobuf definitions, OpenAPI specs. It's powerful, but it's heavy. 15 lines of Lisp, and you have a protocol server