113 lines
3.5 KiB
Java
113 lines
3.5 KiB
Java
/*
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* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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*
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*
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* Client that will run in its own vm and tell the main CheckFQDN test
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* program what its rmi host name is, name obtained from TCPEndpoint.
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*/
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import java.rmi.*;
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import java.rmi.server.*;
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import sun.rmi.transport.tcp.TCPEndpoint;
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/**
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* Get the local endpoint: make sure that this process does
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* not take too much time and that the resulting localhost
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* string is correct for the property set on an execed vm process.
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*/
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public class CheckFQDNClient implements Runnable {
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final static int NAME_SERVICE_TIME_OUT = 12000;
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static TCPEndpoint ep = null;
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/**
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* main, lookup remote object and tell it the rmi
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* hostname of this client vm.
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*/
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public static void main (String args[]) {
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// start a registry and register a copy of this in it.
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TellServerName tell;
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String hostname = null;
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try {
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hostname = retrieveServerName();
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System.err.println("Client host name: " +
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hostname);
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int registryPort = Integer.parseInt(System.getProperty("rmi.registry.port"));
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tell = (TellServerName) Naming.lookup("rmi://:" +
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registryPort
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+ "/CheckFQDN");
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tell.tellServerName(hostname);
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System.err.println("client has exited");
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} catch (Exception e ) {
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throw new RuntimeException(e.getMessage());
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}
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System.exit(0);
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}
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/* what is the rmi hostname for this vm? */
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public static String retrieveServerName () {
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try {
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CheckFQDNClient chk = new CheckFQDNClient();
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synchronized(chk) {
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(new Thread (chk)).start();
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chk.wait(NAME_SERVICE_TIME_OUT);
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}
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if (ep == null) {
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throw new RuntimeException
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("Timeout getting the local endpoint.");
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}
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// this is the name used by rmi for the client hostname
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return ep.getHost();
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}catch (Exception e){
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throw new RuntimeException (e.getMessage());
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}
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}
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/* thread to geth the rmi hostname of this vm */
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public void run () {
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try {
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synchronized(this) {
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ep = TCPEndpoint.getLocalEndpoint(0);
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}
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} catch (Exception e) {
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throw new RuntimeException();
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} finally {
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synchronized(this) {
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this.notify();
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}
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}
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}
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}
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