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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2014 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 static io.netty.handler.ssl.SslUtils.toSSLHandshakeException;
import static io.netty.util.internal.ObjectUtil.checkNotNull;

import io.netty.handler.ssl.JdkApplicationProtocolNegotiator.ProtocolSelectionListener;
import io.netty.handler.ssl.JdkApplicationProtocolNegotiator.ProtocolSelector;

import java.util.LinkedHashSet;
import java.util.List;

import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLException;

import io.netty.util.internal.PlatformDependent;
import org.eclipse.jetty.alpn.ALPN;

abstract class JettyAlpnSslEngine extends JdkSslEngine {
    private static final boolean available = initAvailable();

    static boolean isAvailable() {
        return available;
    }

    private static boolean initAvailable() {
        if (PlatformDependent.javaVersion() <= 8) {
            try {
                // Always use bootstrap class loader.
                Class.forName("sun.security.ssl.ALPNExtension", true, null);
                return true;
            } catch (Throwable ignore) {
                // alpn-boot was not loaded.
            }
        }
        return false;
    }

    static JettyAlpnSslEngine newClientEngine(SSLEngine engine,
            JdkApplicationProtocolNegotiator applicationNegotiator) {
        return new ClientEngine(engine, applicationNegotiator);
    }

    static JettyAlpnSslEngine newServerEngine(SSLEngine engine,
            JdkApplicationProtocolNegotiator applicationNegotiator) {
        return new ServerEngine(engine, applicationNegotiator);
    }

    private JettyAlpnSslEngine(SSLEngine engine) {
        super(engine);
    }

    private static final class ClientEngine extends JettyAlpnSslEngine {
        ClientEngine(SSLEngine engine, final JdkApplicationProtocolNegotiator applicationNegotiator) {
            super(engine);
            checkNotNull(applicationNegotiator, "applicationNegotiator");
            final ProtocolSelectionListener protocolListener = checkNotNull(applicationNegotiator
                            .protocolListenerFactory().newListener(this, applicationNegotiator.protocols()),
                    "protocolListener");
            ALPN.put(engine, new ALPN.ClientProvider() {
                @Override
                public List protocols() {
                    return applicationNegotiator.protocols();
                }

                @Override
                public void selected(String protocol) throws SSLException {
                    try {
                        protocolListener.selected(protocol);
                    } catch (Throwable t) {
                        throw toSSLHandshakeException(t);
                    }
                }

                @Override
                public void unsupported() {
                    protocolListener.unsupported();
                }
            });
        }

        @Override
        public void closeInbound() throws SSLException {
            try {
                ALPN.remove(getWrappedEngine());
            } finally {
                super.closeInbound();
            }
        }

        @Override
        public void closeOutbound() {
            try {
                ALPN.remove(getWrappedEngine());
            } finally {
                super.closeOutbound();
            }
        }
    }

    private static final class ServerEngine extends JettyAlpnSslEngine {
        ServerEngine(SSLEngine engine, final JdkApplicationProtocolNegotiator applicationNegotiator) {
            super(engine);
            checkNotNull(applicationNegotiator, "applicationNegotiator");
            final ProtocolSelector protocolSelector = checkNotNull(applicationNegotiator.protocolSelectorFactory()
                            .newSelector(this, new LinkedHashSet(applicationNegotiator.protocols())),
                    "protocolSelector");
            ALPN.put(engine, new ALPN.ServerProvider() {
                @Override
                public String select(List protocols) throws SSLException {
                    try {
                        return protocolSelector.select(protocols);
                    } catch (Throwable t) {
                        throw toSSLHandshakeException(t);
                    }
                }

                @Override
                public void unsupported() {
                    protocolSelector.unsupported();
                }
            });
        }

        @Override
        public void closeInbound() throws SSLException {
            try {
                ALPN.remove(getWrappedEngine());
            } finally {
                super.closeInbound();
            }
        }

        @Override
        public void closeOutbound() {
            try {
                ALPN.remove(getWrappedEngine());
            } finally {
                super.closeOutbound();
            }
        }
    }
}