[squid-users] TProxy for Squid-2.7.STABLE8

Hi Henrik, Amos, etc

I've been trying to compile Squid-2.7.STABLE8 (squid-2.HEAD-20100222)
but am having difficulty applying the Visolve TProxy-4 patch
 * http://www.visolve.com/squid/squid-tproxy.php

The patch no longer applies cleanly. I spent some time trying to
resolve the conflicts, and after successful compilation, Squid is
listening on its port, but also complains to cachelog as follows and
it's not spoofing the source IP:
{{{
Accepting proxy HTTP connections at 192.168.251.106, port 800, FD 27.
...
commBind: Cannot bind socket FD 31 to 192.168.251.106:800: (98)
Address already in use
}}}

I'm compiling on an Ubuntu 9.10 machine with Linux kernel
2.6.31-19-generic and Linux headers packages installed
{{{
aptitude search ~ilinux-headers
i linux-headers-2.6.31-19
   - Header files related to Linux kernel version 2.6.31
i linux-headers-2.6.31-19-generic
   - Linux kernel headers for version 2.6.31 on x86/x86_64
i A linux-headers-generic
   - Generic Linux kernel headers
}}}

I'm deploying this on a Slackware based box with custom Linux Kernel
2.6.31.6 (TProxy module enabled)
{{{
cachebox# dmesg | grep -i tproxy
NF_TPROXY: Transparent proxy support initialized, version 4.1.0
NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.
}}}

I think the problem might be caused by this recent patch to the libcap
code, particularly - around tools.c:
 * http://www.squid-cache.org/Versions/v2/HEAD/changesets/12640.patch

It looked like the changes to tools.c that had previously been applied
by the Tproxy patch are now part of the 2.7 tree, but re-factored
slightly. Then again I may be totally off the mark :)

I've attached my latest version of the patch in which I rejected all
the Tproxy changes to tools.c.

Has anyone already prepared a more up to date version of the Tproxy
patch? If not, I'd like to help fix the patch, but perhaps someone can
quickly summarise what might be the problem and what needs doing.

-RichardW.