org.freeswitch.esl.client.outbound.SocketClient.java Source code

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Here is the source code for org.freeswitch.esl.client.outbound.SocketClient.java

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/*
 * Copyright 2010 david varnes.
 *
 * Licensed 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 org.freeswitch.esl.client.outbound;

import com.google.common.util.concurrent.AbstractService;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.net.SocketAddress;

/**
 * Entry point to run a socket client that a running FreeSWITCH Event Socket Library module can
 * make outbound connections to.
 * <p/>
 * This class provides for what the FreeSWITCH documentation refers to as 'Outbound' connections
 * from the Event Socket module. That is, with reference to the module running on the FreeSWITCH
 * server, this client accepts an outbound connection from the server module.
 * <p/>
 * See <a href="http://wiki.freeswitch.org/wiki/Mod_event_socket">http://wiki.freeswitch.org/wiki/Mod_event_socket</a>
 */
public class SocketClient extends AbstractService {

    private final Logger log = LoggerFactory.getLogger(this.getClass());
    private final EventLoopGroup bossGroup;
    private final EventLoopGroup workerGroup;
    private final IClientHandlerFactory clientHandlerFactory;
    private final SocketAddress bindAddress;

    private Channel serverChannel;

    public SocketClient(SocketAddress bindAddress, IClientHandlerFactory clientHandlerFactory) {
        this.bindAddress = bindAddress;
        this.clientHandlerFactory = clientHandlerFactory;
        this.bossGroup = new NioEventLoopGroup();
        this.workerGroup = new NioEventLoopGroup();
    }

    @Override
    protected void doStart() {
        final ServerBootstrap bootstrap = new ServerBootstrap().group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new OutboundChannelInitializer(clientHandlerFactory))
                .childOption(ChannelOption.TCP_NODELAY, true).childOption(ChannelOption.SO_KEEPALIVE, true);

        serverChannel = bootstrap.bind(bindAddress).syncUninterruptibly().channel();
        notifyStarted();
        log.info("SocketClient waiting for connections on [{}] ...", bindAddress);
    }

    @Override
    protected void doStop() {
        if (null != serverChannel) {
            serverChannel.close().awaitUninterruptibly();
        }
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
        notifyStopped();
        log.info("SocketClient stopped");
    }

}