Nginx - Redirect Domain Trailing Dot

Question

How can I redirect "http://domain.com." to "http://domain.com" with Nginx?

What's the recommended way of doing this? Regex or is there any other options?

see this post about danger of trailing dot in domain: http://saynt2day.blogspot.com/2013/03/danger-of-trailing-dot-in-domain-name.html — Taha Jahangir, Apr 16 '13 at 03:14

score 22 · Accepted Answer · edited Dec 11 '13 at 15:16

22

The following snippet does this in a general way, without having to hard code any hostnames (useful if your server config handles requests for multiple domains). Add this inside any server definition that you need to.

if ($http_host ~ "\.$" ){
    rewrite ^(.*) $scheme://$host$1 permanent;
}

This takes advantage of the fact (pointed out by Igor Sysoev) that $host has the trailing dot removed, while $http_host doesn't; so we can match the dot in $http_host and automatically use $host for the redirect.

edited Dec 11 '13 at 15:16

Slava Fomin II

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answered Mar 17 '13 at 09:41

El Yobo

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1

Use `rewrite ^(.*) $scheme://$host$1 permanent;` to get rid of hardcoded scheme. – Slava Fomin II Dec 11 '13 at 15:06
Thanks for the suggesion (and edit) @SlavaFominII - much better. – El Yobo Dec 17 '13 at 00:26
In the 1.10 Nginx, the trailing dot is not in the $host or $http_host. – xiaoke Jun 22 '19 at 01:08
I did not test Nginx 1.10, but using [this excellent answer](https://stackoverflow.com/a/45363247/25507), I tested 1.18, and `$http_host` still includes the trailing dot, so this solution should still work. – Josh Kelley Sep 02 '21 at 15:17

score 0 · Answer 2 · answered Mar 16 '13 at 22:19

You will need to use Regex.

server {
    listen       80;
    server_name  domain.com.WHATEVER, domain.com.WHATEVER-2, domain.com.WHATEVER-3;
    rewrite  ^  $scheme://domain.com$request_uri?  permanent;
}

From: http://wiki.nginx.org/HttpRewriteModule

redirect - returns temporary redirect with code 302; it is used if the substituting line begins with http:// permanent - returns permanent redirect with code 301

Nginx - Redirect Domain Trailing Dot

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