1 /*
2 * Copyright (c) 2013, 2017, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package sun.management.jdp;
26
27 import java.io.IOException;
28 import java.net.InetAddress;
29 import java.net.UnknownHostException;
30 import java.util.UUID;
31
32 import java.lang.management.ManagementFactory;
33 import java.lang.management.RuntimeMXBean;
34 import java.lang.reflect.Field;
35 import java.lang.reflect.Method;
36 import java.lang.UnsupportedOperationException;
37 import sun.management.VMManagement;
38
39 /**
40 * JdpController is responsible to create and manage a broadcast loop.
41 *
42 * <p> Other part of code has no access to broadcast loop and have to use
43 * provided static methods
44 * {@link #startDiscoveryService(InetAddress,int,String,String) startDiscoveryService}
45 * and {@link #stopDiscoveryService() stopDiscoveryService}
46 * <p>{@link #startDiscoveryService(InetAddress,int,String,String) startDiscoveryService} could be called multiple
47 * times as it stops the running service if it is necessary.
48 * Call to {@link #stopDiscoveryService() stopDiscoveryService}
49 * ignored if service isn't run.
50 *
51 *
52 * <p> System properties below could be used to control broadcast loop behavior.
53 * Property below have to be set explicitly in command line. It's not possible to
54 * set it in management.config file. Careless changes of these properties could
55 * lead to security or network issues.
56 * <ul>
57 * <li>com.sun.management.jdp.ttl - set ttl for broadcast packet</li>
|
1 /*
2 * Copyright (c) 2013, 2018, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.management.jdp;
27
28 import java.io.IOException;
29 import java.lang.management.ManagementFactory;
30 import java.lang.management.RuntimeMXBean;
31 import java.lang.reflect.Field;
32 import java.lang.reflect.Method;
33 import java.net.InetAddress;
34 import java.net.UnknownHostException;
35 import java.util.UUID;
36
37 /**
38 * JdpController is responsible to create and manage a broadcast loop.
39 *
40 * <p> Other part of code has no access to broadcast loop and have to use
41 * provided static methods
42 * {@link #startDiscoveryService(InetAddress,int,String,String) startDiscoveryService}
43 * and {@link #stopDiscoveryService() stopDiscoveryService}
44 * <p>{@link #startDiscoveryService(InetAddress,int,String,String) startDiscoveryService} could be called multiple
45 * times as it stops the running service if it is necessary.
46 * Call to {@link #stopDiscoveryService() stopDiscoveryService}
47 * ignored if service isn't run.
48 *
49 *
50 * <p> System properties below could be used to control broadcast loop behavior.
51 * Property below have to be set explicitly in command line. It's not possible to
52 * set it in management.config file. Careless changes of these properties could
53 * lead to security or network issues.
54 * <ul>
55 * <li>com.sun.management.jdp.ttl - set ttl for broadcast packet</li>
|