[squid-users] Huge amount of time_wait connections after upgrade from v2 to v3

[Amos Jeffries]

On 15/07/17 11:28, Ivan Larionov wrote:
> Ok, mystery solved.
> 
> Patch "HTTP: do not allow Proxy-Connection to override Connection 
> header" changes the behavior. And we indeed send from our clients:
> 
> Connection: close
> Proxy-Connection: Keep-Alive
> 

Ah. Yes that would lead to trouble.

If you have any influence with the authors of that client software 
please get them to remove the Proxy-Connection header. It should never 
be used in HTTP/1.1 traffic. At the very least, if the clients are 
HTTP/1.0 still it should mirror the Connection value to have consistent 
behaviour from proxies.

If you need a more authoritative reference:
<https://tools.ietf.org/html/rfc7230#appendix-A.1.2>

Amos