(defun read-message (stream)
  (let* ((magic (make-array 4))
         (command (make-array 12))
         (size (make-array 4))
         (checksum (make-array 4)))
    (read-sequence magic stream)
    ;; (read-sequence command stream)
    (dotimes (i 12 t)
      (push (read-char stream) command))
    (read-sequence size stream)
    (read-sequence checksum stream)
    (format t "~a" command)))

(defun read-write-and-close ()
  (let* ((sock
          (usocket:socket-connect "localhost" 8333 :element-type '(unsigned-byte 8))))
    (write-command "version"
                   (make-version-message)
                   'write-version-message
                   (usocket:socket-stream sock))
    (read-message (usocket:socket-stream sock))
    (usocket:socket-close sock)))