JdkAlpnSslUtils.java — netty Source File

Source Code

/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.ssl;

import io.netty.util.internal.EmptyArrays;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.List;
import java.util.function.BiFunction;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLParameters;

final class JdkAlpnSslUtils {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(JdkAlpnSslUtils.class);
    private static final Method SET_APPLICATION_PROTOCOLS;
    private static final Method GET_APPLICATION_PROTOCOL;
    private static final Method GET_HANDSHAKE_APPLICATION_PROTOCOL;
    private static final Method SET_HANDSHAKE_APPLICATION_PROTOCOL_SELECTOR;
    private static final Method GET_HANDSHAKE_APPLICATION_PROTOCOL_SELECTOR;

    static {
        Method getHandshakeApplicationProtocol;
        Method getApplicationProtocol;
        Method setApplicationProtocols;
        Method setHandshakeApplicationProtocolSelector;
        Method getHandshakeApplicationProtocolSelector;

        try {
            SSLContext context = SSLContext.getInstance(JdkSslContext.PROTOCOL);
            context.init(null, null, null);
            SSLEngine engine = context.createSSLEngine();
            getHandshakeApplicationProtocol = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() {
                @Override
                public Method run() throws Exception {
                    return SSLEngine.class.getMethod("getHandshakeApplicationProtocol");
                }
            });
            getHandshakeApplicationProtocol.invoke(engine);
            getApplicationProtocol = AccessController.doPrivileged(new PrivilegedExceptionAction<Method>() {
                @Override
                public Method run() throws Exception {
// ... (119 more lines)