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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 2012 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.channel.oio;

import io.netty.channel.AbstractChannel;
import io.netty.channel.Channel;
import io.netty.channel.ChannelPromise;
import io.netty.channel.EventLoop;
import io.netty.channel.ThreadPerChannelEventLoop;

import java.net.SocketAddress;

/**
 * Abstract base class for {@link Channel} implementations that use Old-Blocking-IO
 *
 * @deprecated use NIO / EPOLL / KQUEUE transport.
 */
@Deprecated
public abstract class AbstractOioChannel extends AbstractChannel {

    protected static final int SO_TIMEOUT = 1000;

    boolean readPending;
    boolean readWhenInactive;
    final Runnable readTask = new Runnable() {
        @Override
        public void run() {
            doRead();
        }
    };
    private final Runnable clearReadPendingRunnable = new Runnable() {
        @Override
        public void run() {
            readPending = false;
        }
    };

    /**
     * @see AbstractChannel#AbstractChannel(Channel)
     */
    protected AbstractOioChannel(Channel parent) {
        super(parent);
    }

    @Override
    protected AbstractUnsafe newUnsafe() {
        return new DefaultOioUnsafe();
    }

    private final class DefaultOioUnsafe extends AbstractUnsafe {
        @Override
        public void connect(
                final SocketAddress remoteAddress,
                final SocketAddress localAddress, final ChannelPromise promise) {
            if (!promise.setUncancellable() || !ensureOpen(promise)) {
                return;
            }

            try {
                boolean wasActive = isActive();
                doConnect(remoteAddress, localAddress);

                // Get the state as trySuccess() may trigger an ChannelFutureListener that will close the Channel.
                // We still need to ensure we call fireChannelActive() in this case.
                boolean active = isActive();

                safeSetSuccess(promise);
                if (!wasActive && active) {
                    pipeline().fireChannelActive();
                }
            } catch (Throwable t) {
                safeSetFailure(promise, annotateConnectException(t, remoteAddress));
                closeIfClosed();
            }
        }
    }

    @Override
    protected boolean isCompatible(EventLoop loop) {
        return loop instanceof ThreadPerChannelEventLoop;
    }

    /**
     * Connect to the remote peer using the given localAddress if one is specified or {@code null} otherwise.
     */
    protected abstract void doConnect(
            SocketAddress remoteAddress, SocketAddress localAddress) throws Exception;

    @Override
    protected void doBeginRead() throws Exception {
        if (readPending) {
            return;
        }
        if (!isActive()) {
            readWhenInactive = true;
            return;
        }

        readPending = true;
        eventLoop().execute(readTask);
    }

    protected abstract void doRead();

    /**
     * @deprecated No longer supported.
     * No longer supported.
     */
    @Deprecated
    protected boolean isReadPending() {
        return readPending;
    }

    /**
     * @deprecated Use {@link #clearReadPending()} if appropriate instead.
     * No longer supported.
     */
    @Deprecated
    protected void setReadPending(final boolean readPending) {
        if (isRegistered()) {
            EventLoop eventLoop = eventLoop();
            if (eventLoop.inEventLoop()) {
                this.readPending = readPending;
            } else {
                eventLoop.execute(new Runnable() {
                    @Override
                    public void run() {
                        AbstractOioChannel.this.readPending = readPending;
                    }
                });
            }
        } else {
            this.readPending = readPending;
        }
    }

    /**
     * Set read pending to {@code false}.
     */
    protected final void clearReadPending() {
        if (isRegistered()) {
            EventLoop eventLoop = eventLoop();
            if (eventLoop.inEventLoop()) {
                readPending = false;
            } else {
                eventLoop.execute(clearReadPendingRunnable);
            }
        } else {
            // Best effort if we are not registered yet clear readPending. This happens during channel initialization.
            readPending = false;
        }
    }
}