1/*
2 * Copyright (c) 2015, 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
24import com.sun.net.httpserver.*;
25
26import java.io.IOException;
27import java.io.InputStream;
28import java.io.OutputStream;
29import java.net.InetSocketAddress;
30import java.nio.file.Files;
31import java.nio.file.Path;
32import java.nio.file.Paths;
33
34/**
35 * Extremely simple server that only performs one task.  The server listens for
36 * requests on the ephemeral port.  If it sees a request that begins with
37 * "/multi-release.jar", it consumes the request and returns a stream of bytes
38 * representing the jar file multi-release.jar found in "userdir".
39 */
40class SimpleHttpServer {
41    private static final String userdir = System.getProperty("user.dir", ".");
42    private static final Path multirelease = Paths.get(userdir, "multi-release.jar");
43
44    private final HttpServer server;
45
46    public SimpleHttpServer() throws IOException {
47        server = HttpServer.create();
48    }
49
50    public void start() throws IOException {
51        server.bind(new InetSocketAddress(0), 0);
52        server.createContext("/multi-release.jar", t -> {
53            try (InputStream is = t.getRequestBody()) {
54                is.readAllBytes();  // probably not necessary to consume request
55                byte[] bytes = Files.readAllBytes(multirelease);
56                t.sendResponseHeaders(200, bytes.length);
57                try (OutputStream os = t.getResponseBody()) {
58                    os.write(bytes);
59                }
60            }
61        });
62        server.setExecutor(null); // creates a default executor
63        server.start();
64    }
65
66    public void stop() {
67        server.stop(0);
68    }
69
70    int getPort() {
71        return server.getAddress().getPort();
72    }
73}
74
75