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package test;
import java.io.IOException;
import java.util.Arrays;
import javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.annotation.HttpMethodConstraint;
import javax.servlet.annotation.ServletSecurity;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.PushBuilder;
import static javax.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>");
}
}