How to detect browser and re-direct Post: 302246020

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Top Forums Web Development How to detect browser and re-direct Post 302246020 by cbkihong on Sunday 12th of October 2008 09:55:47 AM

10-12-2008

Registered User

You can examine the HTTP "User-Agent" header that may carry information about the user's browser used. How to do depends on your server-side development platform (e.g. CGI/PHP/Java etc.) However, because that field can be easily forged, it is not necessarily accurate but that is mostly what you can do.

For redirects, there are mainly 2 ways: HTTP redirect and HTML-based (browser) redirect. With HTTP redirect the server-side generates a redirect (a "moved" HTTP response) that the browser responds to. The second way is to generate a meta tag in the HTML returned to browser, that the browser will do the redirect, but only after the original response is rendered completely. Again, how to do depends on your development platform.

The main difference is that HTML-based redirect will break the "back" button. If the user presses the back button after the redirect, the browser will run the redirect again and the end result is the user is not redirected.

You do not necessarily need to do this with programming. I think you can also implement some of these redirect schemes with certain Apache configuration directives. Dealing with this the Apache way is not my favourite, but that is up to you.

cbkihong

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hman

hman(1)                                                       General Commands Manual                                                      hman(1)

NAME

       hman - browse the on-line manual pages

SYNOPSIS

       hman [ -P browser ] [ -H host ] [ section ] name
       hman [ -P browser ] [ -H host ] [ section ] [ index ]

DESCRIPTION

       The  hman  script is an interface to man2html(1) that allows you to enter man page requests at the command line and view the output in your
       favourite browser.  The behaviour reminds of that of man(1) so that many people will be able to alias hman to man.  If the browser used  is
       netscape, and an incarnation of netscape is running already, hman will pass the request to the existing browser.

OPTIONS

       -P  browser
              Specify  which  browser  (like  lynx, xmosaic, arena, chimera, netscape, amaya, ...) to use.  This option overrides the MANHTMLPAGER
              environment variable.  The default is the non-httpd version of lynx, or sensible-browser if lynx cannot be found.

       -H  host
              Specify from what host to get the man pages.  This option overrides the MANHTMLHOST environment variable.  The default is localhost.

ENVIRONMENT

       MANHTMLPAGER
              The default browser to use is selected using this environment variable.

       MANHTMLHOST
              The default host to use is selected using this environment variable.

SEE ALSO

       man(1), man2html(1), arena(1), lynx(1), sensible-browser(1), netscape(1), xmosaic(1), glimpse(1)

       http://www.mcom.com/newsref/std/x-remote.html

                                                                  19 January 1998                                                          hman(1)