How to write proxy rewrite

Question

I want to proxy all the CSS and JS files in a webpage. For example, in a webpage http://domain-a.com/myapp/somepage/ has some JS/CSS. I want to proxy all those CSS/JS to another domain let's say http://domain-b.com. So, the goal is that http://domain-a.com/myapp/somepage/static/jsfiles/somejsfile.js should be proxied to http://domain-b.com/jsfiles/somejsfile.js That means, whatever comes after /myapp/somepage/static/, should be rewritten and proxied to http://domain-b.com/jsfiles/somejsfile.js.

I have tried the following but it does not work.

RewriteRule ^/myapp/somepage/static/?.*$ http://domain-b.com$0 [P]

When I open this url http://domain-a.com/myapp/somepage/static/jsfiles/somejsfile.js then I expect that js file to be downloaded from domain-b.com using proxy.

Answer 1

Try the following instead:

RewriteRule ^/?myapp/somepage/static/(.*) http://domain-b.com/$1 [P]

If you only want to proxy .css and .js files (if you have other file types that should not be proxied) then use a more restrictive regex to target just those file types. eg. ...static/(.+\.(css|js))$