clojure - Compojure handler friend/authenticate eats body of POST request -


how can safely content of :body inputstream compojure?

see related different question background.

i'm trying authenticate ring routes friend using compojure handler/site when try read :body http post request (which java inputstream), closed:

23:01:20.505 error [io.undertow.request] (xnio-1 task-3) undertow request failed httpserverexchange{ post /paypal/ipn} java.io.ioexception: ut000034: stream closed     @ io.undertow.io.undertowinputstream.read(undertowinputstream.java:84) ~[undertow-core-1.1.0.final.jar:1.1.0.final]     @ sun.nio.cs.streamdecoder.readbytes(streamdecoder.java:284) ~[na:1.8.0_45]     @ sun.nio.cs.streamdecoder.implread(streamdecoder.java:326) ~[na:1.8.0_45]     @ sun.nio.cs.streamdecoder.read(streamdecoder.java:178) ~[na:1.8.0_45]     @ java.io.inputstreamreader.read(inputstreamreader.java:184) ~[na:1.8.0_45]     @ java.io.bufferedreader.fill(bufferedreader.java:161) ~[na:1.8.0_45]     @ java.io.bufferedreader.read(bufferedreader.java:182) ~[na:1.8.0_45]     @ clojure.core$slurp.doinvoke(core.clj:6650) ~[clojure-1.7.0-beta1.jar:na]     @ clojure.lang.restfn.invoke(restfn.java:410) ~[clojure-1.7.0-beta1.jar:na]

if remove handler, problem goes away. i've found 1 possible solution called groundhog captures , stores requests. library i'm using, clojure-paypal-ipn called reset on stream, not supported undertow (or indeed several other java/clojure servers), worked around it.

here a related discussion weavejester, author of compojure.

here snippets of code:

(defroutes routes   ...   (post "/paypal/ipn" [] (payment/paypal-ipn-handler                            payment/paypal-data                            payment/paypal-error                            paypal-sandbox?))   (route/resources "/"))  (defn authenticate-routes   "add friend handler routes"   [routes-set]   (handler/site     (friend/authenticate routes-set friend-settings)))  ;; middleware below immutant.web.middleware (defn -main [& {:as args}]   (web/run     (-> routes       (web-middleware/wrap-session {:timeout 20})        (authenticate-routes) ; use friend handler        ;; wrap handler websocket support       ;; websocket requests go callbacks, ring requests handler       (web-middleware/wrap-websocket websocket-callbacks))     args))

and here guts of payment.clj (paypal-data , paypal-error pprint input right now):

(defn req->body-str [req]   "get request body ring post http request"   (let [input-stream (:body req)]       (let [raw-body-str (slurp input-stream)]           raw-body-str)))  (defn paypal-ipn-handler   ([on-success on-failure] (paypal-ipn-handler on-success on-failure true))   ([on-success on-failure sandbox?]    (fn [req]      (let [body-str (req->body-str req)            ipn-data (paypal/parse-paypal-ipn-string body-str)]        (do          (.start (thread. (fn [] (paypal/handle-ipn ipn-data on-success on-failure sandbox?))))          ; respond paypal right away, go , process ipn-data          {:status  200           :headers {"content-type" "text/html"}           :body    ""})))))


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