subrequest and POST

[Roman Vasilyev]

Hi,

I'm writing code, which making decision to accept or not rest of request 
in NGINX. For that I've created 2 modules, one subrequest module, 
another one accepting "client_max_body_size_var".

Everything works fine, except POST data, I can get result of subrequest 
only when POST finished,
can I get subrequest data before accepting or declining request_body?

Regards
Roman Vasilyev