URL rewriting for different protocols in .htaccess

I need help with url-rewriting in .htaccess.

So the issue is about different protocols: https and http. The main purpose of rewriting is to remove "www" from URL, but protocol should stay the same it was before.

For example, when I have URL like http://www.domain.com/request, it should be redi开发者_运维知识库rected to the http://domain.com/request. I resolve it with these rules:

RewriteBase /
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

But in case, when URL looks like https://www.domain.com/request it should be redirected to https://domain.com/request.

Unfortunately, the above rule will redirect to http regardless current protocol.

Thanks in advance.

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This is fairly similar to the linked possible duplicate, but since that one forces www where you want to remove it, it might warrant a separate answer.

Try something like this:

RewriteCond %{HTTP_HOST} ^www\.
RewriteCond %{HTTPS}s ^on(s)|off
RewriteCond http%1://%{HTTP_HOST} ^(https?://)(www\.)?(.+)$
RewriteRule ^ %1%3%{REQUEST_URI} [R=301,L]