HTTP Put results in "Unable to make field private java.lang.String java.net.URL.host accessible: module java.base does not "opens java.net" to unnamed"

[maheshreddy77]

khttp version is 1.0.0

When calling HTTP PUT to a url, i keep getting below error

java.lang.reflect.InaccessibleObjectException: Unable to make field private java.lang.String java.net.URL.host accessible: module java.base does not "opens java.net" to unnamed module @5f5a92bb
        at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[na:na]
        at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[na:na]
        at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178) ~[na:na]
        at java.base/java.lang.reflect.Field.setAccessible(Field.java:172) ~[na:na]
        at khttp.requests.GenericRequest.toIDN(GenericRequest.kt:198) ~[khttp-1.0.0.jar!/:na]
        at khttp.requests.GenericRequest.makeRoute(GenericRequest.kt:208) ~[khttp-1.0.0.jar!/:na]
        at khttp.requests.GenericRequest.<init>(GenericRequest.kt:132) ~[khttp-1.0.0.jar!/:na]
        at khttp.KHttp.request(KHttp.kt:60) ~[khttp-1.0.0.jar!/:na]
        at khttp.KHttp.put(KHttp.kt:55) ~[khttp-1.0.0.jar!/:na]
        at khttp.KHttp.put$default(KHttp.kt:54) ~[khttp-1.0.0.jar!/:na]
        at ai.paravision.mozart.orchestrator.worker.WorkerClient.search$suspendImpl(WorkerClient.kt:29) ~[classes!/:0.0.0]

[Georglider]

I have the same issue

[Jetug]

Use JDK 1.8

[HagiCohn]

not work for me, any other solution?

[repodiac]

Hi @maheshreddy77, @Georglider, @Jetug and @HagiCohn, I had the same issue and could not find a soluton - but I was successful, eventually.

The root of the problem is the JDK version, from 16.0 or 17.0 on it consequently denies "illegal reflective access" - before, for instance with JDK 11.0, it was possible to ignore or allow those accesses via VM argument (--illegal-access={warn, deny, permit})

Now it is possible only via another VM argument or a list of those, you can just refer to the error message and adjust accordingly. For enabling khttp 1.0 with JDK 17.0 I use these VM arguments:

--add-opens java.base/java.net=ALL.UNNAMED --add-opens java.base/sun.net.www.protocol.https=ALL-UNNAMED

Hope, this was of little help.

PS: The author should make the code compatible with JDK 16.0+ or mention it in the install/setup notes, cc @ascclemens

[OndraZizka]

This is because of JDK 9's modularity (JigSaw).

As mentioned, the author should fix this, preferrably by not using internal JDK API (not intended to be used).

[OndraZizka]

    private fun URL.toIDN(): URL {
        val newHost = IDN.toASCII(this.host)
        //val url = URL(this.protocol, newHost, port, this.file)

        val query = this.query ?. let { URLDecoder.decode(it, "UTF-8") }
        return URL(URI(this.protocol, this.userInfo, newHost, this.port, this.path, query, this.ref).toASCIIString())
    }

[OndraZizka]

The PR should fix it. Pity that the project is likely dormant :)

[OndraZizka]

@ascclemens , Would you allow to publish this into Maven central under ch.zizka.khttp ?