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$browser_version

The $browser_version variable holds the full version string of the browser making the request. It is set by the device-type module when a request is processed.

Type

string

Possible values

  • 120.0.0.0: Represents the complete version string of the browser. This value indicates the specific version of the browser in use.

Examples

Using $browser_version in a log_format

Log the browser version for each request.

http {
    log_format main '$remote_addr - $remote_user [$time_local] '
                    '"$request" $status $body_bytes_sent '
                    '"$http_referer" "$http_user_agent" '
                    '"$browser_version"';

    access_log /var/log/nginx/access.log main;

    server {
        listen 80;
        location / {
            proxy_pass http://backend;
        }
    }
}

Setting a custom header with $browser_version

Pass the browser version to the backend server.

server {
    listen 80;

    location / {
        proxy_set_header X-Browser-Version $browser_version;
        proxy_pass http://backend;
    }
}

Conditional response based on $browser_version

Return a specific response for certain browser versions.

server {
    listen 80;

    location / {
        if ($browser_version = "120.0.0.0") {
            return 200 "Special content for version 120.0.0.0";
        }

        proxy_pass http://backend;
    }
}