Nginx RFC21266 Compliance - 'Proxy-Connection'

Server NGINX
1

Hi,

I’ve posted this question on the IRC before but had no luck. I have the
following problem:

I’d like to disable the ‘Proxy-Connection’ Response Header. I know, that
the “Connection” Header is hard coded in
ngx_http_header_filter_module.c, but does the same apply to
“Proxy-Connection” (couldn’t find it in the sources)?

I’ve tried the more_clear_headers from the ngx_headers_more module and
proxy_set_header(which both work fine with all other headers).

Background: The ‘Proxy-Connection’ sadly violates our Server Policy
(strict RFC21266 compliance).

Kind regards

T. Rodney

2

On Tuesday 25 August 2015 22:03:10 Tyarko Leander Rodney wrote:

Hi,

I’ve posted this question on the IRC before but had no luck. I have the
following problem:

I’d like to disable the ‘Proxy-Connection’ Response Header. I know, that the
“Connection” Header is hard coded in ngx_http_header_filter_module.c, but does the
same apply to “Proxy-Connection” (couldn’t find it in the sources)?
[…]

NGINX doesn’t produce the Proxy-Connection header.

I assume it’s returned by your backend.
If so, then see the “proxy_hide_header” directive:
http://nginx.org/r/proxy_hide_header

wbr, Valentin V. Bartenev

3

Looking at List of HTTP header fields - Wikipedia it
suggests it’s a non-standard request header.

You can probably strip this out of the request to the real server with

proxy_set_header “Proxy-Connection” “”;

Although I’d expect the backend server to ignore invalid request headers
rather than bork on the request.

Steve.