(use http-client)
;; Finally, an example where we need to send an "attachment" (file)
;; We post a file to the echo-service from the first example.
;; This results in a multi-part POST request, for which we set
;; custom headers on the file (but not the main request)
(with-input-from-request "http://localhost/echo-service"
                         '((test . "value")
                           (test-file file: "/tmp/myfile" filename: "hello.txt"
                                      headers: ((content-type text/plain))))
                         read-string)