/*

 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/**

 * @test

 * @bug 8233185

 * @summary HttpServer.stop() blocks indefinitely when called on dispatch thread

 * @modules java.base/sun.net.www

 * @library /test/lib

 * @run main/othervm HttpServerTest

 */

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.Proxy;

import java.net.URL;

import java.util.concurrent.CountDownLatch;

import com.sun.net.httpserver.HttpExchange;

import com.sun.net.httpserver.HttpHandler;

import com.sun.net.httpserver.HttpServer;

import jdk.test.lib.net.URIBuilder;

public class HttpServerTest implements HttpHandler {

    private static final int HTTP_STATUS_CODE_OK = 200;

    private static CountDownLatch serverStopped = new CountDownLatch(1);

    private final HttpServer server;

    public HttpServerTest(HttpServer server) {

        this.server = server;

    }

    @Override

    public void handle(HttpExchange ex) throws IOException {

        sendHttpStatusCode(HTTP_STATUS_CODE_OK, ex);

        System.out.println("Stopping server ...");

        server.stop(1);

        serverStopped.countDown();

    }

    private void sendHttpStatusCode(int httpCode, HttpExchange ex) {

        try {

            ex.sendResponseHeaders(httpCode, 0);

            ex.close();

        } catch (IOException e) {

            throw new RuntimeException("Server couldn't send response: " + e, e);

        }

    }

    public static void main(String[] args) throws IOException, InterruptedException {

        HttpServer server = HttpServer.create(

                new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0);

        try {

            server.createContext("/context", new HttpServerTest(server));

            server.start();

            URL url = URIBuilder.newBuilder()

                    .scheme("http")

                    .loopback()

                    .port(server.getAddress().getPort())

                    .path("/context")

                    .toURLUnchecked();

            HttpURLConnection urlc = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);

            System.out.println("Client: Response code received: " + urlc.getResponseCode());

            InputStream is = urlc.getInputStream();

            is.readAllBytes();

            is.close();

        } finally {

            serverStopped.await();

            System.out.println("Server stopped as expected");

        }

    }

}