1 /*
   2  * Copyright (c) 2002, 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 /* @test
  25  * @bug 4290727
  26  * @summary Verify that ConnectException will trigger HTTP fallback if
  27  *          sun.rmi.transport.proxy.eagerHttpFallback system property is set.
  28  * @run main/othervm EagerHttpFallback
  29  */
  30 
  31 import java.rmi.*;
  32 import java.rmi.registry.*;
  33 
  34 public class EagerHttpFallback {
  35 
  36     static final int INITIAL_PORT = 7070;
  37     static final int FALLBACK_PORT = 7071;
  38 
  39     public static void main(String[] args) throws Exception {
  40         System.setProperty("http.proxyHost", "127.0.0.1");
  41         System.setProperty("http.proxyPort", Integer.toString(FALLBACK_PORT));
  42         System.setProperty("sun.rmi.transport.proxy.eagerHttpFallback",
  43                            "true");
  44         LocateRegistry.createRegistry(FALLBACK_PORT);
  45 
  46         /*
  47          * The call below should trigger a ConnectException in the
  48          * RMIMasterSocketFactory when it attempts a direct connection to
  49          * INITIAL_PORT, which no one is listening on.  Since
  50          * eagerHttpFallback is set, this ConnectException should trigger HTTP
  51          * fallback, which will send a call through the HTTP proxy, which is
  52          * configured to be localhost with a port behind which a registry is
  53          * listening--so if fallback works properly, the list() call should
  54          * succeed.
  55          */
  56         try {
  57             LocateRegistry.getRegistry(INITIAL_PORT).list();
  58         } catch (Exception e) {
  59             System.err.println(
  60                 "call on registry stub with port " + INITIAL_PORT +
  61                 "did not successfully perform HTTP fallback to " +
  62                 FALLBACK_PORT);
  63             throw e;
  64         }
  65     }
  66 }