appserver/tests/appserv-tests/devtests/web/requestDispatcherForwardCommitResponse/WebTest.java

/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

import java.io.*;
import java.net.*;
import com.sun.ejte.ccl.reporter.*;

/**
 * Unit test for CR 6374990 ("Response is not flushed to browser on
 * RequestDispatcher.forward()")
 */
public class WebTest {

    private static SimpleReporterAdapter stat
        = new SimpleReporterAdapter("appserv-tests");

    private static final String TEST_NAME
        = "request-dispatcher-forward-commit-response";

    private static final String EXPECTED_RESPONSE
        = "Message from target servlet";

    private String host;
    private String port;
    private String contextRoot;

    public WebTest(String[] args) {
        host = args[0];
        port = args[1];
        contextRoot = args[2];
    }

    public static void main(String[] args) {
        stat.addDescription("Unit test for 6374990");
        WebTest webTest = new WebTest(args);
        try {
            webTest.doTest();
            stat.addStatus(TEST_NAME, stat.PASS);
        } catch (Exception ex) {
            stat.addStatus(TEST_NAME, stat.FAIL);
            ex.printStackTrace();
        }

        stat.printSummary(TEST_NAME);

        // Wait until the request has returned, to avoid undeploying this
        // test application prematurely.
        try {
            Thread.currentThread().sleep(10 * 1000);
        } catch (Exception e) {
            // Ignore
        }
    }

    public void doTest() throws Exception {

        URL url = new URL("http://" + host  + ":" + port
                          + contextRoot + "/From");
        System.out.println("Connecting to: " + url.toString());

        long start = System.currentTimeMillis();
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.connect();
        int responseCode = conn.getResponseCode();
        if (responseCode != 200) {
            throw new Exception("Unexpected return code: " + responseCode);
        }

        InputStream is = null;
        BufferedReader input = null;
        try {
            is = conn.getInputStream();
            input = new BufferedReader(new InputStreamReader(is));
            String line = input.readLine();
            long end = System.currentTimeMillis();
            if (!EXPECTED_RESPONSE.equals(line)) {
                throw new Exception("Wrong response. Expected: " +
                    EXPECTED_RESPONSE + ", received: " + line);
            }

            if ((end-start) >= (10*1000)) {
                throw new Exception("Response was delayed by 10 seconds " +
                    "or more, which is how long the " +
                    "origin servlet of the RD.forward() " +
                    "has been sleeping for. " +
                    "The response should have been " +
                    "committed immediately.");
            }
        } finally {
            try {
                if (is != null) {
                    is.close();
                }
            } catch (IOException ioe) {
                // ignore
            }
            try {
                if (input != null) {
                    input.close();
                }
            } catch (IOException ioe) {
                // ignore
            }
        }
    }
}