Clever Geek Handbook

Using the [L] flag when redirecting to another host

apache docs mention

You almost always want to use [R]

in conjunction with [L]

(ie use [R,L]

) because the flag itself is [R]

http://thishost[:thisport]

in the URI, but then passes that value to the next rule in the ruleset, which can often lead to "Invalid URI in request".

Now let's say I have a rewrite statement like this:

RewriteRule ^pass/?$ https://www.example.com/ [R,NC]

Since I'm redirecting my client to a different host / domain here, is it really necessary to pass the flag [L]

?

Were there any effects if I also use the flag [QSA]

?

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1 answer


Good question.

In all of my testing, I was unable to create a scenario where an exception to L

this rule shows a change in overall behavior. Only the change happens internally, as setting L

flag force mod_rewrite

starts the loop rewrite

immediately and not until the end of the file. So IMO s is L

better for performance reasons, if not for other reasons.



A QSA

: It is absolutely unnecessary here, as it QSA

is only required when your rule changes QUERY_STRING

what is wrong here.

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