io.vertx.core.net.JdkSSLEngineOptions.java Source code

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Here is the source code for io.vertx.core.net.JdkSSLEngineOptions.java

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/*
 * Copyright (c) 2011-2019 Contributors to the Eclipse Foundation
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 * which is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 */

package io.vertx.core.net;

import io.vertx.codegen.annotations.DataObject;
import io.vertx.core.json.JsonObject;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;

/**
 * Configures a {@link TCPSSLOptions} to use the JDK ssl engine implementation.
 *
 * @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
 */
@DataObject
public class JdkSSLEngineOptions extends SSLEngineOptions {

    private static Boolean jdkAlpnAvailable;

    /**
     * @return if alpn support is available via the JDK SSL engine
     */
    public static synchronized boolean isAlpnAvailable() {
        if (jdkAlpnAvailable == null) {
            boolean available = false;
            try {
                // Public method on SSLEngine
                SSLEngine.class.getDeclaredMethod("getApplicationProtocol");
                available = true;
            } catch (Exception ignore1) {
                // JDK provides ALPN
                try {
                    // Always use bootstrap class loader.
                    JdkSSLEngineOptions.class.getClassLoader().loadClass("sun.security.ssl.ALPNExtension");
                    available = true;
                } catch (Exception ignore2) {
                    // alpn-boot was not loaded.
                }
            } finally {
                jdkAlpnAvailable = available;
            }
        }
        return jdkAlpnAvailable;
    }

    public JdkSSLEngineOptions() {
    }

    public JdkSSLEngineOptions(JsonObject json) {
    }

    public JdkSSLEngineOptions(JdkSSLEngineOptions that) {
    }

    public JsonObject toJson() {
        return new JsonObject();
    }

    @Override
    public JdkSSLEngineOptions copy() {
        return new JdkSSLEngineOptions();
    }
}