http-equiv="Refresh" Meta Tag not Followed

This section provides a tutorial example showing that the LWP::UserAgent get() method does not follow the http-equiv='Refresh' meta tag in the response.

Okay, my LWP-UserAgent-GET-Redirect.pl script works well on with the HTTP redirect header line: "Location: ...uri..." in the response header.

But does it work with "Refresh" http-equiv meta tag in the response document? We can find it out with my CGI script CGI-pm-http-equiv-Refresh.pl running on my local Apache Web server as described in previous tutorials.

C:\herong>LWP-UserAgent-GET-Redirect.pl 
   http://localhost/CGI-pm-HTTP-equiv-Refresh.pl

GET http://localhost/CGI-pm-HTTP-equiv-Refresh.pl
User-Agent: Mozilla/5.0 (Windows NT 6.1)

HTTP/1.1 200 OK
Connection: close
Server: Apache/2.2.25 (Win32)
Content-Type: text/html; charset=ISO-8859-1
Client-Response-Num: 1
Client-Transfer-Encoding: chunked
Refresh: 1,CGI-pm-http-equiv-Refresh.pl
Title: CGI-pm-http-equiv-Refresh.pl

...
<html ...>
<head>
<title>A Simple Web Clock</title>
<meta http-equiv="Refresh" content="1,CGI-pm-http-equiv-Refresh.pl" />
...
</head>
<body>
<p>Current time: 8:41:8
</p>
</body>
</html>

Apparently, the default behavior of LWP::UserAgent get() method does not follow the http-equiv="Refresh" meta tag in the response.

Last update: 2014.

Table of Contents

 About This Book

 Perl on Linux Systems

 ActivePerl on Windows Systems

 Data Types: Values and Variables

 Expressions, Operations and Simple Statements

 User Defined Subroutines

 Perl Built-in Debugger

 Name Spaces and Perl Module Files

 Symbolic (or Soft) References

 Hard References - Addresses of Memory Objects

 Objects (or References) and Classes (or Packages)

 Typeglob and Importing Identifiers from Other Packages

 String Built-in Functions and Performance

 File Handles and Data Input/Output

 Open Files in Binary Mode

 Open Directories and Read File Names

 File System Functions and Operations

 Converting Perl Script to Executable Binary

 Using DBM Database Files

 Using MySQL Database Server

 Socket Communication Over the Internet

 XML::Simple Module - XML Parser and Generator

 XML Communication Model

 SOAP::Lite - SOAP Server-Client Communication Module

 Perl Programs as IIS Server CGI Scripts

 CGI (Common Gateway Interface)

 XML-RPC - Remote Procedure Call with XML and HTTP

 RPC::XML - Perl Implementation of XML-RPC

 Integrating Perl with Apache Web Server

 CGI.pm Module for Building Web Pages

LWP::UserAgent and Web Site Testing

 What Is LWP::UserAgent?

 What Is HTTP::Response?

 What Is HTTP::Request?

 LWP-UserAgent-GET.pl - Sending a GET Request

 LWP-UserAgent-GET-Redirect.pl - Following HTTP Redirects

http-equiv="Refresh" Meta Tag not Followed

 LWP-UserAgent-POST.pl - Posting Form Data

 post() Method not Following Redirect Location

 LWP-UserAgent-POST-Redirect.pl - Posting with Redirects

 What Is HTTP::Cookies?

 LWP-UserAgent-Request.pl - GET, POST and Cookies

 LWP-UserAgent-Request.pl - Login to facebook.com

 HTTP::Cookies save() not Saving Temporary Cookies

 LWP-UserAgent-Request-Cookies.pl - Sending Request with Cookies

 References

 PDF Printing Version