[squid-users] Icap Reqmod

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

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
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Received on Wed Nov 04 2009 - 04:10:43 MST