[squid-dev] form PROXY header for cache_peer requests

[Alex Rousskov]

On 2026-04-16 10:23, Anthony Pankov wrote:
> Thursday, April 16, 2026, 4:45:40 PM, you wrote: 
>> On 2026-04-16 07:51, Anthony Pankov wrote:
> 
>>> I didn't find how to instruct Squid to form PROXY header for request
>>> going to parent cache_peer.

>> Official Squid code does not support PROXY protocol on cache_peer
>> connections. Factory has implemented the required changes, but the
>> corresponding proxy_protocol_outgoing feature is currently stuck in
>> Squid Project backlog. Squid core developers cannot find a way to
>> collaborate on clearing that growing backlog, so there is no ETA.


> Is it somewhere in pull requests?

Not yet: Dozens of backlogged changes, including several large ones, 
need to be officially posted, reviewed, and merged first, but core 
developers actions (and inaction) all but froze that process. There is 
currently no consensus on how to solve this problem. We cannot even 
agree to meet to discuss it. :-(

Alex.