CODEWITHSUNDEEP
http-redirectnginx
user2814036
user2814036

Reputation: 41

Redirection in nginx

I'm very new to nginx and hit the wall configuring simple redirection. Here is my very simple config trying redirection:

server {
    listen 80 default_server;

    set $mobile "false";

    if ($http_user_agent ~* '(phone|droid)') {
        set $mobile "true";
    }

    if ($mobile = true) {
        return 301 http://X.X.X.X/mobile$request_uri;
    }

    location /mobile {
        include uwsgi_params;
        uwsgi_pass unix:/var/www/video_m/video.sock;
    }

    location / {
        include uwsgi_params;
        uwsgi_pass unix:/var/www/video/video.sock;
    }
}

When go to site from desktop everything is ok and my request is going to uwsgi. But from mobile device I get an error from browser ERR_TOO_MANY_REDIRECTS and request url looks like http://X.X.X.X/mobile/mobile/mobile/mobile/mobile/mobile/mobile/mobile

There is obviously something essential and possibly very simple piece that I missing. Please help me out.

Upvotes: 1

Views: 79

Answers (1)

Richard Smith
Richard Smith

Reputation: 49792

You have created a loop. The first time it hits the if/return a /mobile prefix is added. Then the URI is presented again and it hits the same statement adding another /mobile prefix, and this continues to be repeated.

To break the loop, you need to protect the if/return within a path that is not taken once the /mobile prefix is added the first time.

Maybe:

server {
    listen 80 default_server;

    location /mobile {
        include uwsgi_params;
        uwsgi_pass unix:/var/www/video_m/video.sock;
    }

    location / {
        if ($http_user_agent ~* '(phone|droid)') {
            return 301 $scheme://$host/mobile$request_uri;
        }

        include uwsgi_params;
        uwsgi_pass unix:/var/www/video/video.sock;
    }
}

Upvotes: 1

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