public void prepareHandshake(HttpProtocol[] protocols, AlpnResolvedCallback callback)
            throws IOException {
        this.mClientAlpns = protocols;
        this.mAlpnCallback = callback;
        super.prepareHandshake();
    }
Http 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 23:31
netbare-core/src/main/java/com/github/megatronking/netbare/http/HttpSSLResponseCodec.java