htaccess redirect between subdomains depending on the file extension

Kenny Lajara

Situtation

I have 2 subdomains www.example.com and static.example.com and they both read the files on the same folder. So:

If I go to https://static.example.com/privacy I see the same that I see on https://www.example.com/privacy
If I go to https://www.example.com/src/file.js I see the same that I see on https://static.example.com/src/file.js
Also, both subdomains read the same .htaccess file.

What I want to do

I want is to redirect any request of an image, video, js or css file from www to static and any other file type from static to www.

Expected Behavior

That way, if I go to https://static.example.com/privacy I should be redirected to https://www.example.com/privacy

And, if I go to https://www.example.com/src/file.js I see the same the is on https://static.example.com/src/file.js

MrWhite

You can do something like the following:

# Identify static resources - set an environment variable
SetEnvIf Request_URI "(?i)\.(jpg|png|gif|mpg|mp4|wmv|js|css)$" STATIC_RESOURCE

# Redirect static resources to static subdomain
RewriteCond %{HTTP_HOST} ^www\.
RewriteCond %{ENV:STATIC_RESOURCE} =1
RewriteRule \.([\w]{2,4})$ https://static.example.com%{REQUEST_URI} [R=301,L]

# Redirect "other" requests to www
RewriteCond %{HTTP_HOST} ^static\.
RewriteCond %{ENV:STATIC_RESOURCE} ^$
RewriteRule ^ https://www.example.com%{REQUEST_URI} [R=301,L]

Although, I assume your site is already linking to the appropriate subdomain?

You could just force a 404 instead?

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