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Why does the ring resource response respond with the content type of the application / octet stream?

I'm trying to understand why Ring resource-responseprefers to respond with a content type application/octet-stream. I recently updated some sample code that I learned from, so that it uses a new one ring-defaults. Prior to use, ring-defaultsthis code responded with a content type html. Why now do you choose the octet stream?

(ns replays.handler
  (:require [compojure.core :refer [GET defroutes]]
            [compojure.route :as route]
            [ring.util.response :refer [response resource-response]]
            [ring.middleware.json :as middleware]
            [ring.middleware.defaults :refer [wrap-defaults api-defaults]]))

(defroutes app-routes
  (GET  "/" [] (resource-response "index.html" {:root "public"}))
  (GET  "/widgets" [] (response [{:name "Widget 1"} {:name "Widget 2"}]))
  (route/resources "/public")
  (route/not-found "not found"))

(def app
  (-> app-routes
      (middleware/wrap-json-body)
      (middleware/wrap-json-response)
      (wrap-defaults api-defaults)))

And, for version numbers, here is the project file ...

(defproject replays "0.1.0-SNAPSHOT"

  :url "http://example.com/FIXME"
  :description "FIXME: write description"

  :plugins [[lein-pdo "0.1.1"]
            [lein-ring "0.9.3"]
            [lein-cljsbuild "1.0.5"]]

  :dependencies [[org.clojure/clojure "1.6.0"]
                 [org.clojure/core.async "0.1.346.0-17112a-alpha"]
                 [org.clojure/clojurescript "0.0-3126"]
                 [org.omcljs/om "0.8.8"]
                 [ring/ring-core "1.3.2"]
                 [ring/ring-json "0.3.1"]
                 [ring/ring-defaults "0.1.4"]
                 [compojure "1.3.2"]
                 [cljs-http "0.1.29"]]

  :source-paths ["src/clj"]

  :ring {:handler replays.handler/app}

  :cljsbuild {:builds [{:id "dev"
                        :source-paths ["src/cljs"]
                        :compiler {:output-to "resources/public/js/app.js"
                                   :output-dir "resources/public/js/out"
                                   :optimizations :none
                                   :source-map true}}]}

  :aliases {"up" ["pdo" "cljsbuild" "auto" "dev," "ring" "server-headless"]}

  :profiles {:dev {:dependencies [[javax.servlet/servlet-api "2.5"]
                                  [ring-mock "0.1.5"]]}})
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1 answer

, api-defaults ( ring.middleware.content-type) , . , resource-response, . ring.middleware.content-type application/octet-stream.

, , :

(ns app.routes
  (:require [compojure.core :refer [defroutes GET]]
            [ring.util.response :as resp]))

(defroutes appRoutes
  ;; ...
  ;; your routes
  ;; ...
  (GET "/"
       resp/content-type (resp/resource-response "index.html" {:root "public"}) "text/html"))
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