1/*
2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 *
26 *
27 * Client that will run in its own vm and tell the main CheckFQDN test
28 * program what its rmi host name is, name obtained from TCPEndpoint.
29 */
30
31import java.rmi.*;
32import java.rmi.server.*;
33import sun.rmi.transport.tcp.TCPEndpoint;
34
35/**
36 * Get the local endpoint: make sure that this process does
37 * not take too much time and that the resulting localhost
38 * string is correct for the property set on an execed vm process.
39 */
40public class CheckFQDNClient implements Runnable {
41
42    final static int NAME_SERVICE_TIME_OUT = 12000;
43
44    static TCPEndpoint ep = null;
45
46    /**
47     * main, lookup remote object and tell it the rmi
48     * hostname of this client vm.
49     */
50    public static void main (String args[]) {
51
52        // start a registry and register a copy of this in it.
53        TellServerName tell;
54        String hostname = null;
55
56        try {
57            hostname = retrieveServerName();
58            System.err.println("Client host name: " +
59                               hostname);
60
61            int registryPort = Integer.parseInt(System.getProperty("rmi.registry.port"));
62            tell = (TellServerName) Naming.lookup("rmi://:" +
63                                                  registryPort
64                                                  + "/CheckFQDN");
65            tell.tellServerName(hostname);
66            System.err.println("client has exited");
67
68        } catch (Exception e ) {
69            throw new RuntimeException(e.getMessage());
70        }
71        System.exit(0);
72    }
73
74    /* what is the rmi hostname for this vm? */
75    public static String retrieveServerName () {
76        try {
77
78            CheckFQDNClient chk = new CheckFQDNClient();
79
80            synchronized(chk) {
81                (new Thread (chk)).start();
82                chk.wait(NAME_SERVICE_TIME_OUT);
83            }
84
85            if (ep == null) {
86                throw new RuntimeException
87                    ("Timeout getting the local endpoint.");
88            }
89
90            // this is the name used by rmi for the client hostname
91            return ep.getHost();
92
93        }catch (Exception e){
94            throw new RuntimeException (e.getMessage());
95        }
96    }
97
98    /* thread to geth the rmi hostname of this vm */
99    public void run () {
100        try {
101            synchronized(this) {
102                ep = TCPEndpoint.getLocalEndpoint(0);
103            }
104        } catch (Exception e) {
105            throw new RuntimeException();
106        } finally {
107            synchronized(this) {
108                this.notify();
109            }
110        }
111    }
112}
113