Skip to Content (Press Enter)

This document is a draft, and is designed to show changes from a previous version. It is presently showing added text,changed text,deleted text,[start]/[end] markers,and Issue Numbers.

Hide All Edits   |   Toggle Deletions  |   Toggle Issue Numbers   |   Toggle [start]/[end] Markers   |   Show All Edits

Changes are displayed as follows:

F58: Failure of SC 2.2.1 due to using server-side techniques to automatically redirect pages after a time-out


This failure relates to:

User Agent and Assistive Technology Support Notes

The Refresh header is not defined in HTTP/1.1 or HTTP/1.0, but it is widely supported by browsers (tested in Firefox 1.0 and IE 6 on Windows).


Server-side scripting languages allow developers to set the non-standard HTTP header "Refresh" with a time-out (in seconds) and a URL to which the browser is redirected after the specified time-out. If the time interval is too short, people who are blind will not have enough time to make their screen readers read the page before the page refreshes unexpectedly and causes the screen reader to begin reading at the top. Sighted users may also be disoriented by the unexpected refresh.

The HTTP header that is set is Refresh: {time in seconds}; url={URI of new location}. It is also possible to omit the URL and obtain a periodically refreshing page, which causes the same problem. The HTTP header that is set is Refresh: {time in seconds}.


Failure Example 1

The following example is a failure because a timed server-side redirect is implemented in Java Servlets or JavaServer Pages (JSP).

public void doGet (HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException {
	PrintWriter out = response.getWriter();
	response.setHeader("Refresh", "10; URL=TargetPage.html");
	out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"
	out.println("<p>This page will redirect you in 10 seconds.</p>");

Failure Example 2

The following example is a failure because a timed server-side redirect is implemented in Active Server Pages (ASP) with VBScript.

 <% @Language = "VBScript" %>
 <% option explicit 
 Response.AddHeader "Refresh", "5; URL=TargetPage.htm"
 %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
 <html xmlns="" lang="en" xml:lang="en">
 <!--HTML code for content that is shown before the redirect is triggered-->


Resources are for information purposes only, no endorsement implied.



  1. When a Web page is rendered, check to see if it automatically redirects to another page after some period of time without the user taking any action.

Expected Results