AdaptDatagramSocket.java revision 9330:8b1f1c2a400f 
1/*
2 * Copyright (c) 2001, 2013, 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 4313882 4981129
26 * @summary Unit test for datagram-socket-channel adaptors
27 * @library ..
28 */
29
30import java.net.*;
31import java.nio.channels.*;
32import java.util.*;
33
34
35public class AdaptDatagramSocket {
36
37    static java.io.PrintStream out = System.out;
38    static Random rand = new Random();
39
40    static String toString(DatagramPacket dp) {
41        return ("DatagramPacket[off=" + dp.getOffset()
42                + ", len=" + dp.getLength()
43                + "]");
44    }
45
46    static void test(DatagramSocket ds, InetSocketAddress dst,
47                     boolean shouldTimeout)
48        throws Exception
49    {
50        DatagramPacket op = new DatagramPacket(new byte[100], 13, 42, dst);
51        rand.nextBytes(op.getData());
52        DatagramPacket ip = new DatagramPacket(new byte[100], 19, 100 - 19);
53        out.println("pre  op: " + toString(op) + "  ip: " + toString(ip));
54
55        long start = System.currentTimeMillis();
56        ds.send(op);
57
58        for (;;) {
59            try {
60                ds.receive(ip);
61                if (ip.getLength() == 0) { // ## Not sure why this happens
62                    ip.setLength(100 - 19);
63                    continue;
64                }
65            } catch (SocketTimeoutException x) {
66                if (shouldTimeout) {
67                    out.println("Receive timed out, as expected");
68                    return;
69                }
70                throw x;
71            }
72            break;
73        }
74
75        out.println("rtt: " + (System.currentTimeMillis() - start));
76        out.println("post op: " + toString(op) + "  ip: " + toString(ip));
77
78        for (int i = 0; i < ip.getLength(); i++) {
79            if (ip.getData()[ip.getOffset() + i]
80                != op.getData()[op.getOffset() + i])
81                throw new Exception("Incorrect data received");
82        }
83
84        if (!(ip.getSocketAddress().equals(dst))) {
85            throw new Exception("Incorrect sender address, expected: " + dst
86                + " actual: " + ip.getSocketAddress());
87        }
88    }
89
90    static void test(InetSocketAddress dst,
91                     int timeout, boolean shouldTimeout,
92                     boolean connect)
93        throws Exception
94    {
95        out.println();
96        out.println("dst: " + dst);
97
98        DatagramSocket ds;
99        if (false) {
100            // Original
101            ds = new DatagramSocket();
102        } else {
103            DatagramChannel dc = DatagramChannel.open();
104            ds = dc.socket();
105            ds.bind(new InetSocketAddress(0));
106        }
107
108        out.println("socket: " + ds);
109        if (connect) {
110            ds.connect(dst);
111            out.println("connect: " + ds);
112        }
113        InetSocketAddress src = new InetSocketAddress(ds.getLocalAddress(),
114                                                      ds.getLocalPort());
115        out.println("src: " + src);
116
117        if (timeout > 0)
118            ds.setSoTimeout(timeout);
119        out.println("timeout: " + ds.getSoTimeout());
120
121        for (int i = 0; i < 5; i++) {
122            test(ds, dst, shouldTimeout);
123        }
124
125        // Leave the socket open so that we don't reuse the old src address
126        //ds.close();
127
128    }
129
130    public static void main(String[] args) throws Exception {
131        // need an UDP echo server
132        try (TestServers.UdpEchoServer echoServer
133                = TestServers.UdpEchoServer.startNewServer(100)) {
134            final InetSocketAddress address
135                = new InetSocketAddress(echoServer.getAddress(),
136                                        echoServer.getPort());
137            test(address, 0, false, false);
138            test(address, 0, false, true);
139            test(address, 15000, false, false);
140        }
141        try (TestServers.UdpDiscardServer discardServer
142                = TestServers.UdpDiscardServer.startNewServer()) {
143            final InetSocketAddress address
144                = new InetSocketAddress(discardServer.getAddress(),
145                                        discardServer.getPort());
146            test(address, 10, true, false);
147        }
148    }
149
150}
151