0005476: Async requests via Resin LoadBalancer

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Category

Severity

Reproducibility

Date Submitted

Last Update

0005476

[Resin]

minor

always

07-01-13 15:24

07-01-13 09:05

Reporter

alex

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

4.0.37

Product Version

4.0.36

Product Build

Summary

0005476: Async requests via Resin LoadBalancer

Description

Comet requests return prematurely if requested via load balancer.

<html>
  <head>
    <title>test</title>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
    <script type="text/javascript">
      var i = 0; function test() {
        if (i++ > 32) return; $.ajax({
          type: 'GET',
          url: 'async'
        });
        get(Math.floor(Math.random() * 100));
      }
      function get(n) {
        $.ajax({
          type: 'GET',
          url: 'image.png',
          data: { '_': n },
          success: function() { setTimeout(test, 1000); }
        });
      }
      $(function() {
           test();
      });
    </script>
  </head>
  <body></body>
</html>

package jp.co.intra_mart;

import java.io.IOException;
import java.util.concurrent.TimeUnit;

import javax.servlet.AsyncContext;
import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class AsyncServlet extends GenericServlet {
    @Override
    public void service(final ServletRequest request, final ServletResponse response) throws IOException, ServletException {
        final AsyncContext context = request.startAsync();

        context.setTimeout(30 * 1000);
        context.start(new Runnable() {
            @Override
            public void run() {
                try {
                    TimeUnit.SECONDS.sleep(5);
                } catch (final Exception e) {
                    e.printStackTrace();
                } finally {
                    context.complete();
                }
            }
        });
    }
}

package jp.co.intra_mart;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ResinIISTestServlet extends HttpServlet {
    @Override
    protected void service(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
        final StringBuilder builder = new StringBuilder(1024);

        builder.append("<html>\n");
        builder.append(" <head>\n");
        builder.append(" <title>test</title>\n");
        builder.append(" <script src=\"//ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js\"></script>\n");
        builder.append(" <script type=\"text/javascript\">\n");
        builder.append(" var i = 0;");
        builder.append(" function test() {\n");
        builder.append(" if (i++ > 32) return;");
        builder.append(" $.ajax({\n");
        builder.append(" type: 'GET',\n");
        builder.append(" url: 'async'\n");
        builder.append(" });\n");
        builder.append(" get(Math.floor(Math.random() * 100));\n");
        builder.append(" }\n");
        builder.append(" function get(n) {\n");
        builder.append(" $.ajax({\n");
        builder.append(" type: 'GET',\n");
        builder.append(" url: 'image.png',\n");
        builder.append(" data: { '_': n },\n");
        builder.append(" success: function() { setTimeout(test, 1000); }\n");
        builder.append(" });\n");
        builder.append(" }\n");
        builder.append(" $(function() {\n");
        builder.append(" test();\n");
        builder.append(" });\n");
        builder.append(" </script>\n");
        builder.append(" </head>\n");
        builder.append(" <body></body>\n");
        builder.append("</html>\n");

        resp.getWriter().write(builder.toString());
    }
}

Steps To Reproduce

Additional Information

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" [^] xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" [^] metadata-complete="false" version="3.0" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee [^] http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> [^]
    <servlet>
        <servlet-name>ResinIISTestServlet</servlet-name>
        <servlet-class>jp.co.intra_mart.ResinIISTestServlet</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>AsyncServlet</servlet-name>
        <servlet-class>jp.co.intra_mart.AsyncServlet</servlet-class>
        <async-supported>true</async-supported>
    </servlet>

    <servlet-mapping>
        <servlet-name>ResinIISTestServlet</servlet-name>
        <url-pattern>/test</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>AsyncServlet</servlet-name>
        <url-pattern>/async</url-pattern>
    </servlet-mapping>
</web-app>

Attached Files

Relationships

Notes
(0006292) ferg 07-01-13 09:05	server/26u2

Issue History
Date Modified	Username	Field	Change
07-01-13 15:24	alex	New Issue
07-01-13 15:43	alex	Description Updated
07-01-13 16:57	yanonaoki	Issue Monitored: yanonaoki
07-01-13 09:05	ferg	Note Added: 0006292
07-01-13 09:05	ferg	Assigned To	=> ferg
07-01-13 09:05	ferg	Status	new => closed
07-01-13 09:05	ferg	Resolution	open => fixed
07-01-13 09:05	ferg	Fixed in Version	=> 4.0.37

Mantis 1.0.0rc3[^]

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