HTTP/2 Client

Questions & Help How to?
5

If you are running Clojure on Java11 you can use the newly added HttpClient which has full support for HTTP/2. The API is a bit java-ish but works well enough from Clojure.

(ns foo.test
  (:import [java.net.http HttpClient HttpRequest HttpClient$Version HttpResponse$BodyHandlers]
           [java.net URI]))

(let [req
      (-> (HttpRequest/newBuilder)
          (.uri (URI/create "https://www.google.com"))
          (.GET)
          (.build))

      client
      (-> (HttpClient/newBuilder)
          (.version HttpClient$Version/HTTP_2)
          (.build))

      res
      (.send client req (HttpResponse$BodyHandlers/ofString))]
  (println (.body res)))

The entire java.net.http package is pretty powerful and supports everything you’ll ever need to do HTTP requests. Assuming of course you are running Java11 and Clojure.