Redirect Loop issue for Rewrite and Redirect to same page

[davideastes Profile]

I am trialling the effects of a URL rewrite on one version of one of our pages. Goal 1 does work but adding in Goal 2 creates a redirect loop. Any ideas on how this can be achieved?


GOAL 1: Rewrite (DONE)
Setup http://www.cleancruising.com.au/cruisel ... rica-line/ as a rewrite of http://www.cleancruising.com.au/cruiseline.asp?id=HAL



GOAL 2: Redirect
301 Redirect ALL traffic from http://www.cleancruising.com.au/cruiseline.asp?id=HAL over to the new page at http://www.cleancruising.com.au/cruisel ... rica-line/



CURRENT CODE:
# Helicon Ape version 3.1.0.248

RewriteEngine On
RewriteBase /
RewriteRule ^cruiseline/holland-america-line/ /cruiseline.asp?id=HAL [NC, L]

RewriteCond %{QUERY_STRING} ^id=HAL
RewriteRule ^cruiseline\.asp$ /cruiseline/holland-america-line/? [NC,R=301]

[Yaroslav]

Hello.

Add an NS flag to redirect rule to prevent from calling it on subrequests:

RewriteCond %{QUERY_STRING} ^id=HAL
RewriteRule ^cruiseline\.asp$ /cruiseline/holland-america-line/? [NS,NC,R=301]

[davideastes Profile]

Yaroslav. You are fantastic.

This worked a treat. Well done. Really appreciate this as I was completely unaware of the NS flag. I will read up on the documentation.

THANK YOU!

[Yaroslav]

You're welcome!

This is to comply with Apache mod_rewrite behavior - every time config results into a change of URL, new internal subrequest is called starting all rules sequence with new URL again. This can result in a loop if one rule takes the same pattern that other generates, which is sometimes useful, but need to be screened out with NS flag when undesired.