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 

    24 import com.sun.net.httpserver.*;

    25 

    26 import java.io.IOException;

    27 import java.io.InputStream;

    28 import java.io.OutputStream;

    29 import java.net.InetSocketAddress;

    30 import java.nio.file.Files;

    31 import java.nio.file.Path;

    32 import 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  */

    40 class 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