Nginx proxy_intercept_errors

[Maxim Dounin]

Hello!

On Wed, Mar 06, 2013 at 03:44:37PM +0200, Kiril Kalchev wrote:

> I have noticed that when I set 'proxy_intercept_errors on;'  in 
> my nginx config it kills tcp connection to the origin server if 
> it returns 4xx or 5xx?
> This is my example config to reproduce the 
> situation(https://gist.github.com/kirilkalchev/5098882).  I am 
> in a situation where my backend server returns only 403 and 404 
> (it is some kind of home made authentication system 403 means go 
> away 404 means continue) and I need to display different things 
> in this cases, but without keep alive connections to the backend 
> are exhausted pretty fast.

With proxy_intercept_errors nginx doesn't read the response body 
if a response returned is the error, and the upstream connection 
can't be kept alive due to this (unless there is no body and it's 
known after reading response headers).

-- 
Maxim Dounin
http://nginx.org/en/donation.html