/*

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

import com.sun.net.httpserver.*;

import java.io.IOException;

import java.io.InputStream;

import java.net.*;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.atomic.AtomicBoolean;

import jdk.test.lib.net.URIBuilder;

import sun.net.httpserver.HttpExchangeAccess;

/**

 * @test

 * @bug 8203036

 * @library /test/lib

 * @modules jdk.httpserver/sun.net.httpserver

 * @build jdk.httpserver/sun.net.httpserver.HttpExchangeAccess AutoCloseableHttpExchange

 * @run main/othervm AutoCloseableHttpExchange

 * @summary Ensure that HttpExchange closes correctly when utilising the

 * AutoCloseable interface e.g. both request InputStream and response OutputStream

 * are closed, if not already.

 */

public class AutoCloseableHttpExchange {

    static HttpServer testHttpServer;

    static AtomicBoolean exchangeCloseFail = new AtomicBoolean(false);

    static class Handler implements HttpHandler {

        private CountDownLatch latch;

        Handler(CountDownLatch latch) {

            this.latch = latch;

        }

        public void handle(HttpExchange t) throws IOException {

            InputStream is = t.getRequestBody();

            try (HttpExchange e = t) {

                while (is.read() != -1) ;

                t.sendResponseHeaders(200, -1);

            }

            if (!HttpExchangeAccess.isClosed(t)) {

                exchangeCloseFail.set(true);

            }

            latch.countDown();

        }

    }

    static void connectAndCheck(String realm) throws Exception {

        URL url = URIBuilder.newBuilder()

                .scheme("http")

                .loopback()

                .port(testHttpServer.getAddress().getPort())

                .path(realm)

                .toURL();

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

        InputStream is = testConnection.getInputStream();

        while (is.read() != -1) ;

        is.close();

    }

    public static void main(String[] args) throws Exception {

        int CONNECTION_COUNT = 5;

        CountDownLatch latch = new CountDownLatch(CONNECTION_COUNT);

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

        testHttpServer = HttpServer.create(addr, 0);

        testHttpServer.createContext("/test", new Handler(latch));

        ExecutorService executor = Executors.newFixedThreadPool(CONNECTION_COUNT);

        testHttpServer.setExecutor(executor);

        testHttpServer.start();

        while (CONNECTION_COUNT-- != 0) {

            connectAndCheck("/test");

        }

        latch.await();

        testHttpServer.stop(2);

        executor.shutdown();

        if (exchangeCloseFail.get())

            throw new RuntimeException("The exchange was not closed properly");

    }

}