/*
 * Copyright (c) 2017, 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
 */

package test;

import java.io.IOException;
import java.util.Arrays;

import jakarta.servlet.AsyncContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.WriteListener;
import jakarta.servlet.annotation.HttpMethodConstraint;
import jakarta.servlet.annotation.ServletSecurity;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import jakarta.servlet.http.PushBuilder;
import static jakarta.servlet.annotation.ServletSecurity.TransportGuarantee.CONFIDENTIAL;

@WebServlet(urlPatterns="/test")
@ServletSecurity(httpMethodConstraints={
        @HttpMethodConstraint(value="GET", transportGuarantee=CONFIDENTIAL) })
public class TestServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res)
            throws IOException, ServletException {
        HttpSession session = req.getSession(true);
        session.putValue("info", "...");
        PushBuilder pushBuilder = req.newPushBuilder().
            addHeader("test", "gf2").
            setHeader("test", "gf").
            addHeader("cookie", "JSESSIONID=" + session.getId()).
            queryString(req.getQueryString()).
            path("test.jsp");
        pushBuilder.push();
        res.getWriter().println("<html><head><title>HTTP2 Test</title><body>"
            + "<div id=\"test\"></div>"
            + "<script>function loadDoc() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById(\"test\").innerHTML = this.responseText; } }; xhttp.open(\"GET\", \"test.jsp?\" + window.location.search, true); xhttp.setRequestHeader(\"test\", \"gf\"); xhttp.send(); } loadDoc()</script>"
            + "</body></html>");
    }
}