com.liferay.portal.kernel.util.SocketUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of com.liferay.portal.kernel Show documentation

Contains interfaces for the portal services. Interfaces are only loaded by the global class loader and are shared by all plugins.

There is a newer version: 156.0.0

Show newest version

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.util;

import java.io.IOException;

import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NetworkInterface;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;

import java.nio.channels.ServerSocketChannel;

/**
 * @author Shuyang Zhou
 */
public class SocketUtil {

	public static ServerSocketChannel createServerSocketChannel(
			InetAddress bindingInetAddress, int startPort,
			ServerSocketConfigurator serverSocketConfigurator)
		throws IOException {

		ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();

		int port = startPort;

		while (true) {
			try {
				ServerSocket serverSocket = serverSocketChannel.socket();

				if (serverSocketConfigurator != null) {
					serverSocketConfigurator.configure(serverSocket);
				}

				serverSocket.bind(
					new InetSocketAddress(bindingInetAddress, port));

				return serverSocketChannel;
			}
			catch (IOException ioe) {
				port++;
			}
		}
	}

	public static BindInfo getBindInfo(String host, int port)
		throws IOException {

		Socket socket = null;

		try {
			socket = new Socket(host, port);

			InetAddress inetAddress = socket.getLocalAddress();
			NetworkInterface networkInterface =
				NetworkInterface.getByInetAddress(inetAddress);

			BindInfo bindInfo = new BindInfo();

			bindInfo.setInetAddress(inetAddress);
			bindInfo.setNetworkInterface(networkInterface);

			return bindInfo;
		}
		finally {
			if (socket != null) {
				try {
					socket.close();
				}
				catch (IOException ioe) {
				}
			}
		}
	}

	public static class BindInfo {

		public InetAddress getInetAddress() {
			return _inetAddress;
		}

		public NetworkInterface getNetworkInterface() {
			return _networkInterface;
		}

		public void setInetAddress(InetAddress inetAddress) {
			_inetAddress = inetAddress;
		}

		public void setNetworkInterface(NetworkInterface networkInterface) {
			_networkInterface = networkInterface;
		}

		private InetAddress _inetAddress;
		private NetworkInterface _networkInterface;

	}

	public interface ServerSocketConfigurator {

		public void configure(ServerSocket serverSocket) throws SocketException;

	}

}