Nginx Redirect – How to Redirect Requests to a Different Domain/URL

nginxredirectrewrite

I'm trying to redirect all users coming to a URL "http://example.com/something" to a URL like "http://answares.com/examples_com/something".

I'm trying with code like this:

server {
  listen 1.2.3.4:80;
  server_name "example.com";
  rewrite ^(.*) http://answares.com/examples_com$1 permanent;
}

By accessing "http://example.com/" I get redirected to "http://answares.com/examples_com/", but by accessing "http://example.com/something" I get redirected to: "http://answares.com/something".

I tried to do it in different ways but the best I got was:

http://answares.com/examples_com//something

Which because of the two slashes looks lame.
I'm using Nginx 0.7.65 on Ubuntu 10.4

Best Answer

The fastest way is to do a return instead of a rewrite. see here:

nginx redirect to www.domain

I just answered the linked question and tumbled upon this one.

Correct way in new versions of nginx

Turn out my first answer to this question was correct at certain time, but it turned into another pitfall - to stay up to date please check Taxing rewrite pitfalls

I have been corrected by many SE users, so the credit goes to them, but more importantly, here is the correct code:

server {
       listen         80;
       server_name    my.domain.com;
       return         301 https://$server_name$request_uri;
}

server {
       listen         443 ssl;
       server_name    my.domain.com;
       # add Strict-Transport-Security to prevent man in the middle attacks
       add_header Strict-Transport-Security "max-age=31536000" always; 

       [....]
}

Nginx 0.7.65 rewrite not working for double slashes

The reason is rewrite module auto trim the slash when parsing the request. If you take a look at error log, you will see something like this:

[notice] 5883#0: 1 "(.+)//(image.jpg)" does not match "/uploads/image.jpg", client: 127.0.0.1, server: localhost, request: "GET /uploads//image.jpg HTTP/1.1", host: "localhost"

However, you can use $request_uri variable to keep the original request URI as received from client:

    location ~* \.jpg {
        if ($request_uri ~ "(.+)\/\/(.+\.jpg)") {
            set $folder_uri $1;
            set $file_uri $2;
            rewrite .* $folder_uri/300/$file_uri permanent;
        }
    }

Best Answer

Related Solutions

NGINX Redirect – How to Rewrite All HTTP Requests to HTTPS While Maintaining Sub-Domain

Correct way in new versions of nginx

Nginx 0.7.65 rewrite not working for double slashes

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