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Common LISP: How to open an SSL / TLS stream

• Author: Solène
• Date: 26 September 2016
• Tags: lisp networking

NILHere is a tiny code to get a connection to an SSL/TLS server. I am

writing an IRC client and an IRC bot too and it's better to connect

through a secure channel.

This requires **usocket** and **cl+ssl**:

(usocket:with-client-socket (socket stream *server* *port*)
  (let ((ssl-stream (cl+ssl:make-ssl-client-stream stream
    						   :external-format '(:iso-8859-1 :eol-style :lf)
    						   :unwrap-stream-p t
    						   :hostname *server*)))
    (format ssl-stream "hello there !~%")
    (force-output ssl-stream)))