Nginx limit related modules

Implementation

Modules work in three steps:

After request comes, limit_proxy_module sends question to local server.
Depending on local server answer, HTTP UNAUTHORIZED is send, or control is forwarded to protected module.
During execution of protected module, data are transfered via traffic filter which counts them. When all data are send, filter sends total traffic used to local server.

Author:: Copyright 2009 DreamLab Onet.pl Sp. z o.o.
Authors: Grzegorz Jablonski jablonski.grzegorz@gmail.com, Michal Szklarzewicz michal.szklarzewicz@gmail.com