[Bug 12302] Lord of the Rings: Shadows of Angmar unplayable due to high lag

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=12302





--- Comment #60 from Daniel Santos <daniel.santos at pobox.com>  2008-07-11 17:05:33 ---
I've been reading up on netfilter and it appears that the best way to do this
now days is via the netfilter_queue
(http://www.netfilter.org/projects/libnetfilter_queue/index.html) library and
it can be done entirely in userspace! :)  Of course, it will have to be run as
root, but I like this better than mucking around in kernel space and require
less peer-review and scrutiny.  There is an example program in the utils
directory of the source package and I've been playing with it a little thus
far.  There's not much documentation out for this and what is out there is
mostly out of date :(  but it's been a nice learning experience.

So in summary, this should supercede the need to call ipfilter and write a
netfilter module.  Instead, there will be a program that runs in user space as
root that will kill the packets via the netfilter_queue API.  Additionally, it
should be possible to write this program so that it can have the switch user
bit set and be executed by a non-super-user and have it effect only their
network traffic since the netfilter_queue API supports filtering by the user or
group of the app who created the packet.  The only other problem I haven't
figured out yet is how to make sure that it's friendly towards two instances
running on the same machine, as the wine dll hack currently is, as I haven't
yet discovered a way to filter by process ID of the app that created the
traffic.


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