TLS/SSL web socket feature demo not working

[field-theory]

Steps to reproduce:

1. System setup: macOS X 10.12.6, Leiningen 2.8.1 on Java 1.8.0_152 Java HotSpot(TM) 64-Bit Server VM, the feature demo is checked out from this repository.
2. Run lein with-profiles http2 run
3. Connect to wss://localhost:8443/reverser with the client http://demos.kaazing.com/echo/.

Expected behavior: The web socket connection is established.

Actual behavior: The connection fails with the following exception stack trace:

Exception in thread "XNIO-1 task-3" java.lang.NoSuchMethodError: sun.security.ssl.SupportedEllipticCurvesExtension.curveIds()[I
        at sun.security.ssl.ServerHandshaker.setupEphemeralECDHKeys(ServerHandshaker.java:1470)
        at sun.security.ssl.ServerHandshaker.trySetCipherSuite(ServerHandshaker.java:1272)
        at sun.security.ssl.ServerHandshaker.chooseCipherSuite(ServerHandshaker.java:1076)
        at sun.security.ssl.ServerHandshaker.clientHello(ServerHandshaker.java:742)
        at sun.security.ssl.ServerHandshaker.processMessage(ServerHandshaker.java:225)
        at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1026)
        at sun.security.ssl.Handshaker$1.run(Handshaker.java:966)
        at sun.security.ssl.Handshaker$1.run(Handshaker.java:963)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.security.ssl.Handshaker$DelegatedTask.run(Handshaker.java:1416)
        at io.undertow.protocols.ssl.SslConduit$5.run(SslConduit.java:1034)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)