"error_page"& "return" bug?

[Nginx User]

On 19 February 2012 17:46, Edho Arief <edho at myconan.net> wrote:
> On Sun, Feb 19, 2012 at 9:01 PM, Nginx User <nginx at nginxuser.net> wrote:
>>> What's the problem with placing return 503 in location / { } block?
>>
>> None whatsoever. Did anyone say there was one?
>>
>
> Just wondering. Also I couldn't make the method with rewriting work. I
> got 302'd ad infinitum.

That'll be because none of the code I posted is actually real. They
were just to help get an answer.

This is what actually works:

Server {
	error_page 503 /error_docs/custom503.html;
	if ( $request_uri !~ \.(jpg|gif|png|css|js)$ ) {
		set $tt  "T";
	}
	if ( $request_uri !~ ^/maintenance/$ ) {
    	set $tt  "${tt}T";
	}
	if ( $tt = TT ) {
		rewrite ^ /maintenance/ redirect;
	}
	location /maintenance {
		internal;
		return 503;
	}
	location /error_docs {
		internal;
		alias /server/path/to/503_status/folder;
	}
}