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