Aleph invalid data

core.clj

(ns twoohfour.core
  (:require [aleph.http :as http])
  (:gen-class))

(defn handler [req]
  {:status 204
   :headers {"content-type" "text/plain"}
   :body "Something"})

(defn -main
  [& _]
  (prn "Starting server...")
  (http/start-server handler {:port 8080}))

transcript.txt

% curl -i -X GET http://127.0.0.1:8080/
HTTP/1.1 204 No Content
Content-Type: text/plain
Server: Aleph/0.4.0
Connection: Keep-Alive
Date: Thu, 24 Sep 2015 09:25:05 GMT
content-length: 9

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