@Override
    protected SSLEngine createEngine(SSLEngineFactory factory) {
        return enableALPN(super.createEngine(factory));
    }
Http request ssl codec enables Application-Layer Protocol Negotiation(ALPN).

See http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-04#page-4

@author Megatron King
@since 2019/1/3 23:01
netbare-core/src/main/java/com/github/megatronking/netbare/http/HttpSSLRequestCodec.java