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Re: Squid going through another forward proxy

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On 14/11/2014 10:36 a.m., Hector Chan wrote:
> Basically, what I am looking for is whether it's possible to set up
> the following:
> 
> Client (A) --> Squid as Reverse Proxy (B) --> Squid as Forward
> Proxy (C) --> Origin Servers Depending on Client Request URI (D)
> 
> Depending on the client request from (A), (B) could route the
> request to different origin servers (multiple cache_peer lines).
> The request has to go through (C) to reach (D), as (C) is the only
> way out of the network to the internet.  Moreover, the logic of
> figuring out where to go to lies in (C).
> 
> I know it's kind of a weird setup, but, unfortunately, we do not
> have access or control of (A) and (C).

Nothing weird about that at all. It is a perfectly normal CDN proxy
chain. The only potentially tricky bit will be getting the domain
owner to add your reverse-proxy IP address to the domain.

Forward/reverse are *input* modes, indicating the HTTP syntax expected
and resulting behaviour. Any type of proxy can be configured with a
cache_peer for *output*.

Only the interception proxy have problems with cache_peer sometimes,
because their very existence is a violation of the protocol.

Amos

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