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Java example source code file (EpollDomainSocketFdTest.java)

This example Java source code file (EpollDomainSocketFdTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractsockettest, blockingqueue, bootstrap, channelfuturelistener, channelinboundhandleradapter, epolldomainsocketchannel, epolldomainsocketfdtest, exception, filedescriptor, linkedblockingqueue, net, network, object, override, socketaddress, threading, threads, throwable, util

The EpollDomainSocketFdTest.java Java example source code

/*
 * Copyright 2015 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:
 *
 *   http://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.epoll;

import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.unix.DomainSocketReadMode;
import io.netty.channel.unix.FileDescriptor;
import io.netty.testsuite.transport.TestsuitePermutation;
import io.netty.testsuite.transport.socket.AbstractSocketTest;
import org.junit.Assert;
import org.junit.Test;

import java.net.SocketAddress;
import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;


public class EpollDomainSocketFdTest extends AbstractSocketTest {
    @Override
    protected SocketAddress newSocketAddress() {
        return EpollSocketTestPermutation.newSocketAddress();
    }

    @Override
    protected List<TestsuitePermutation.BootstrapComboFactory newFactories() {
        return EpollSocketTestPermutation.INSTANCE.domainSocket();
    }

    @Test(timeout = 30000)
    public void testSendRecvFd() throws Throwable {
        run();
    }

    public void testSendRecvFd(ServerBootstrap sb, Bootstrap cb) throws Throwable {
        final BlockingQueue<Object> queue = new LinkedBlockingQueue(1);
        sb.childHandler(new ChannelInboundHandlerAdapter() {
            @Override
            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                // Create new channel and obtain a file descriptor from it.
                final EpollDomainSocketChannel ch = new EpollDomainSocketChannel();

                ctx.writeAndFlush(ch.fd()).addListener(new ChannelFutureListener() {
                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
                        if (!future.isSuccess()) {
                            Throwable cause = future.cause();
                            queue.offer(cause);
                        }
                    }
                });
            }
        });
        cb.handler(new ChannelInboundHandlerAdapter() {
            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                FileDescriptor fd = (FileDescriptor) msg;
                queue.offer(fd);
            }

            @Override
            public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
                queue.add(cause);
                ctx.close();
            }
        });
        cb.option(EpollChannelOption.DOMAIN_SOCKET_READ_MODE,
                DomainSocketReadMode.FILE_DESCRIPTORS);
        Channel sc = sb.bind().sync().channel();
        Channel cc = cb.connect().sync().channel();

        Object received = queue.take();
        cc.close().sync();
        sc.close().sync();

        if (received instanceof FileDescriptor) {
            FileDescriptor fd = (FileDescriptor) received;
            Assert.assertTrue(fd.isOpen());
            fd.close();
            Assert.assertFalse(fd.isOpen());
            Assert.assertNull(queue.poll());
        } else {
            throw (Throwable) received;
        }
    }
}

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