HTTP client app hangs on after all work done

[Marko Topolnik]

I execute just this code:

(run-pipeline

 (http-request {:method :get :url "http://localhost/test"})

 (fn [resp]

   (println "response" (update-in resp [:body] decode-json))))

and the application hangs on after printing the response. Thread dump shows lamina-scheduler-n threads (daemons, so shouldn't be causing trouble), and some Netty threads: Hashed wheel timer #n, and New I/O boss #n. 

What function should I call to clean up? I'm running with:

[org.clojure/clojure "1.5.1"]

[aleph "0.3.0-beta16" :exclusions [lamina]]

[lamina "0.5.0-beta15"]

(lamina-beta14 has dep issues with yammer metrics)

-marko

[Zach Tellman]

The issue here is that clients share an NioClientSocketChannelFactory [1].  I've pushed a change to 0.3.0-SNAPSHOT which makes those shared threads daemons, which should fix your issue.

By the way, aleph beta16 already targets lamina beta15, so the exclusions in your project.clj shouldn't be necessary.

Zach

[1] https://github.com/ztellman/aleph/blob/perf/src/aleph/netty/client.clj#L86

-marko

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