/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/**

 *

 *

 * Client that will run in its own vm and tell the main CheckFQDN test

 * program what its rmi host name is, name obtained from TCPEndpoint.

 */

import java.rmi.*;

import java.rmi.server.*;

import sun.rmi.transport.tcp.TCPEndpoint;

/**

 * Get the local endpoint: make sure that this process does

 * not take too much time and that the resulting localhost

 * string is correct for the property set on an execed vm process.

 */

public class CheckFQDNClient implements Runnable {

    final static int NAME_SERVICE_TIME_OUT = 12000;

    static TCPEndpoint ep = null;

    /**

     * main, lookup remote object and tell it the rmi

     * hostname of this client vm.

     */

    public static void main (String args[]) {

        // start a registry and register a copy of this in it.

        TellServerName tell;

        String hostname = null;

        try {

            hostname = retrieveServerName();

            System.err.println("Client host name: " +

                               hostname);

            tell = (TellServerName) Naming.lookup("rmi://:" +

                                                  TestLibrary.REGISTRY_PORT

                                                  + "/CheckFQDN");

            tell.tellServerName(hostname);

            System.err.println("client has exited");

        } catch (Exception e ) {

            throw new RuntimeException(e.getMessage());

        }

        System.exit(0);

    }

    /* what is the rmi hostname for this vm? */

    public static String retrieveServerName () {

        try {

            CheckFQDNClient chk = new CheckFQDNClient();

            synchronized(chk) {

                (new Thread (chk)).start();

                chk.wait(NAME_SERVICE_TIME_OUT);

            }

            if (ep == null) {

                throw new RuntimeException

                    ("Timeout getting the local endpoint.");

            }

            // this is the name used by rmi for the client hostname

            return ep.getHost();

        }catch (Exception e){

            throw new RuntimeException (e.getMessage());

        }

    }

    /* thread to geth the rmi hostname of this vm */

    public void run () {

        try {

            synchronized(this) {

                ep = TCPEndpoint.getLocalEndpoint(0);

            }

        } catch (Exception e) {

            throw new RuntimeException();

        } finally {

            synchronized(this) {

                this.notify();

            }

        }

    }

}