Re: [squid-users] Icap Reqmod

Robert Szabo wrote:
>
> From: Robert Szabo
> Sent: Tuesday, November 03, 2009 10:46 PM
> To: squid-users_at_squid-cache.org
> Subject: Icap Reqmod
>
>
> Hi all,
>
> I am attempting to use the icap client interface to perform url redirects. I have done this using my icap server connecting to several commercial gateway boxes without issue however, with squid it's not working as I had hoped.
>
> A typical icap reqmod would appear something like:
>
> REQMOD icap://localhost:8082/ ICAP/1.0
> Host: localhost
> Connection: close
> Encapsulated: req-hdr=0, null-body=117
> X-UserId: 55555555555
>
> GET / HTTP/1.1
> Host: fastclick.net
> Accept: text/html, text/plain
> Accept-Encoding: compress
> Pragma: no-cache
>
> And a blocking or redirect response would look like:
>
> ICAP/1.0 200 OK
> Encapsulated: req-hdr=0, req-body=148
> ISTag: istag
> Server: AMS-ICAP-Server-Software/1.0
>
> GET www.nogo.com/redirect.pl?cat=3&a=b HTTP/1.1
> Accept: text/html, text/plain
> Accept-Encoding: compress
> Pragma: no-cache
> Content-Length: 2
>

Missing either protocol spec http:// or path-spec / at the start of the
URL, and a Host: header....

>
> You will notice the GET and Host: portions in the reqmod, these are essential for redirection to work.
>
> However with Squid 3.0 and Squid 3.1, the reqmod does not look right, it is missing the GET and instead has HEAD in that location and does not split out the query path from the host :
>
> REQMOD icap://127.0.0.1:8082/reqmod ICAP/1.0
> Host: 127.0.0.1:8082
> Date: Tue, 03 Nov 2009 23:38:31 GMT
> Encapsulated: req-hdr=0, null-body=135
> Allow: 204
>
> HEAD http://www.888.com/ HTTP/1.0
> User-Agent: Wget/1.11.4 (Red Hat modified)
> Accept: */*
> Host: www.888.com
> X-UserId: 5555555555
>
> I have tried responding in the same vane as the message above replacing the url in the HEAD line, however, the request goes through fine without considering the redirect.
>
> Can someone provide a sample reqmod and redirect response that would work?
>
>
> Many Thanks,
>
> Bob

You seem to have generated that test request with wget --spider or -N
options and with wget configured to use a proxy.

That means it generates HEAD requests instead of GET and formats the
request URL suitable for a proxy to handle easily. Squid is simply
passing what it is given to the ICAP server.

What exact releases of squid did you test with?

Amos

-- 
Please be using
   Current Stable Squid 2.7.STABLE7 or 3.0.STABLE20
   Current Beta Squid 3.1.0.14