which leads me to think that it is not actually on the classpath. I have the same configuration as that in the blog post, except having Wildfly 10.0.1.Final instead of Wildfly 9.0.0.Beta1. I have the correct alpn-boot jar version since it already works outside of WildFly, but I do not know what else I could be missing. Thank you very much for your time.okhttp3.OkHttpClient -- ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path?