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jeremybenn |
/* GameManagerAddressServer.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.classpath.examples.CORBA.swing.x5;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.ServerSocket;
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import java.net.Socket;
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/**
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* The main executable class of the game manager server.
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*
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* The manager address server returns the IOR address string of the game
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* manager. Hence the user does not need to enter the rather long IOR address
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* string and only needs to specify the host and port of the machine where the
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* game manager is running.
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*
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* The manager address server starts the main game manager as well.
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*
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* This server acts as a HTTP server that always returns the same response. This
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* primitive functionality is sufficient for its task.
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*
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* The more complex CORBA applications should use the name service instead. We
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* do not use the name service as this would require to start additional
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* external application, specific for the different java platforms.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public class X5Server
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{
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/**
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* Start the game manager.
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*/
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public static void main(String[] args)
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{
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// Start the game manager, write the IOR to the agreed location.
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OrbStarter.startManager(args);
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if (!GameManagerImpl.ok)
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{
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System.out.println("Unable to start the game manager:");
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System.exit(1);
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}
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// Print the IOR.
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System.out.println(GameManagerImpl.ior);
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String manager_address = null;
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// Start the game manager server.
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ServerSocket nameServer = null;
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try
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{
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nameServer = new ServerSocket(OrbStarter.MANAGER_NAMER_PORT);
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System.out.println("The game manager is listening at:");
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manager_address = "http://"
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+ InetAddress.getLocalHost().getHostAddress() + ":"
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+ nameServer.getLocalPort();
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System.out.println(manager_address);
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System.out.println("Enter this address to the "
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+ "input field of the game client.");
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System.out.println("Use ^C to stop the manager.");
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}
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catch (Exception ex)
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{
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System.out.println("The port " + OrbStarter.MANAGER_NAMER_PORT
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+ " is not available. The game manager namer will not start.");
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System.exit(1);
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}
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// Write the IOR to the local file system.
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if (OrbStarter.WRITE_URL_TO_FILE != null)
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{
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try
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{
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File gmf = new File(OrbStarter.WRITE_URL_TO_FILE);
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FileWriter f = new FileWriter(gmf);
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BufferedWriter b = new BufferedWriter(f);
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b.write(manager_address);
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b.close();
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}
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catch (IOException e)
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{
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System.out.println("Local filesystem not accessible."
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+ "Read IOR from console.");
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}
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}
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// Do forever.
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while (true)
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{
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try
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{
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Socket socket = nameServer.accept();
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System.out.println("Connected.");
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// Set the two minutes timeout.
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socket.setSoTimeout(1000 * 120);
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OutputStream out = socket.getOutputStream();
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int length = GameManagerImpl.ior.length();
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StringBuilder b = new StringBuilder();
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b.append("HTTP/1.0 200 OK\r\n");
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b.append("Content-Length: " + length + "\r\n");
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b.append("Connection: close\r\n");
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b.append("Content-Type: text/plain; charset=UTF-8\r\n");
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b.append("\r\n");
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b.append(GameManagerImpl.ior);
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out.write(b.toString().getBytes("UTF-8"));
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socket.shutdownOutput();
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if (!socket.isClosed())
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socket.close();
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System.out.println("Completed.");
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}
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catch (Exception exc)
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{
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exc.printStackTrace();
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System.out.println("Network problem.");
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}
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}
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}
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}
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