Redirect all request to a server except static files.

nginx-redirect.conf

server {
        listen 80 ;
        server_name 127.0.0.1;

        client_header_timeout 60s;
        client_body_timeout 30s;
        send_timeout 60s;

        #access_log /var/log/redirect.access_log redirect;

        location / {
                access_by_lua '
                        local uri = ngx.var.uri
                        local method = ngx.req.get_method()
                        if not ngx.re.match(method,"^GET|POST$","oj") then
                                return ngx.exit(ngx.HTTP_NOT_ALLOWED)
                        end
                        if ngx.re.match(uri, "\.(jp?g|png|gif|bmp|ico|rar|zip|gz|flv|swf|js|css)$", "ioj") then
                                return ngx.exit(ngx.HTTP_NOT_FOUND)
                        end
                        return ngx.redirect("http://www.notsobad.me/?a=1", ngx.HTTP_MOVED_TEMPORARILY)
                ';
        }
}