recipe for SSL configuration with httpkit to solve javax.net.ssl.SSLException

httpkit_ssl.clj

(ns httpkit-ssl
  "recipe for SSL configuration with httpkit if you get javax.net.ssl.SSLException on Java 8
  more info: https://github.com/http-kit/http-kit/issues/334"
  (:require [org.httpkit.client :as http])
  (:import (java.net URI)
           (javax.net.ssl SSLEngine
                          SSLParameters
                          SNIHostName)))

(defn sni-configure
  [^SSLEngine ssl-engine ^URI uri]
  (let [^SSLParameters ssl-params (.getSSLParameters ssl-engine)]
    (.setServerNames ssl-params [(SNIHostName. (.getHost uri))])
    (.setSSLParameters ssl-engine ssl-params)))

(def client (http/make-client {:ssl-configurer sni-configure}))

(comment

  (http/post url {:client client ,,,})
  )