I skimmed over the ngx_http_limit_req_module.c and didn't see anything
obvious in relation to file checking, but here's my scenario...

I have a location block that will re-write the requested 'versioned'
file name to the actual common file name, so I can set some things
immutable without having to deal with changing tons of physical files
(only the HTML changes).

example (shortened for brevity):

# file.v1.gif = file.gif
location ~* (.+)\.v\d+\.(gif|jpg|png)$ {
try_files $1.$2 $uri @proxy;
}

When I had the following limit_req in my @proxy 'location' block,
limiting worked fine.

location @proxy {
limit_req zone=reqlimit burst=24 delay=12;
proxy_pass http://backend;
}

Obviously the above limit_req never interacted with the rewriting
'location' mentioned above (the @proxy at the end of try_files was
just a fallback in case of errors).

However, when I moved the limit_req up to the 'server' level, I
started getting 404 errors for all the image requests that were
handled by the above mentioned rewriting location block. All other
files were handled just fine.

Kind of scratching my head on this one. Any thoughts Maxim?

Thanks!
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