RE: [squid-users] Newbie: Use Squid to provide intermediate proxy with proxy bypass list?

> -----Original Message-----
> From: Amos Jeffries [mailto:squid3_at_treenet.co.nz]
> Sent: Thursday, October 18, 2012 11:08 PM
> To: squid-users_at_squid-cache.org
> Subject: Re: [squid-users] Newbie: Use Squid to provide intermediate
> proxy with proxy bypass list?
>
> On 19/10/2012 3:03 p.m., KARR, DAVID wrote:
> > I know very little about Squid, except that I can use it to implement
> a proxy server.
> >
> > I'm trying to find a workaround to a problem I have with the Android
> emulator. The emulator can be started either with or without a proxy
> server host and port, but when the proxy server is provided, I cannot
> provide a proxy bypass list.
>
> Okay. Question: what type of proxy is it expecting? HTTP or something
> else (like SOCKS)? and why do you believe you need a bypass list?

Http.

Because some hosts on the internal network don't require a proxy to access, and in fact don't work properly if the host is not in the bypass list.

> > I'm trying to use the emulator to test a web site use case that
> consists of one or more pages that don't require a proxy, along with at
> least one page that does require a proxy. Because I can't set a proxy
> bypass list in the emulator, this test case won't work.
> >
> > I wondered if it is possible to set up an intermediate proxy, running
> either on localhost or on another box I control, such that this proxy
> just connects to another proxy, but it also has a proxy bypass list. I
> would then use this intermediate proxy instead of the downstream one.
> >
> > It seems like this would solve my problem. Am I misguided?
> >
> > If this is a reasonable thing to do, and will likely solve my
> problem, is it practical to do this with Squid? Is there a different
> open-source framework I should use instead of Squid?
>
> HTTP is stateless with proxy designed into the base protocol
> specification as *optional*. Requiring a proxy or requiring ones
> absence
> is both a violation of HTTP. Requiring a particular path of servers to
> be taken is also a protocol violation. The client makes a request and
> the recipient (proxy or server) determines how it is delivered - and
> even *if* it is delivered.

I don't know what to do with this information.
Received on Sat Oct 20 2012 - 18:38:19 MDT