Wanproxy question

Mattia Peirano mattia.peirano at centeropenmiddleware.com
Fri Jun 21 00:16:18 PDT 2013


I agree the priority assignation and I think that the possibility of using
wanproxy as transparent proxy will give to the software much more value!

Thank you for your reply.


On 20 June 2013 18:00, Juli Mallett <juli at clockworksquid.com> wrote:

> On Thu, Jun 20, 2013 at 1:08 AM, Mattia Peirano
> <mattia.peirano at centeropenmiddleware.com> wrote:
> > Hi!
> >
> > I write you because I'm trying Wanproxy. I think it is a good work and
> I'm
> > trying to better understand the real architecture of the software in
> order
> > to contribute.
> >
> > I tested it in a virtual environment and I noticed a behavior that I
> think
> > could be improved. The machine running the proxyclient does not make flow
> > control over the tcp connection with the host.
> > Here the topology of the scenario:
> >                                                           _____
> > Host -------- WANProxy Client-------| WAN |---------WANProxy
> > Server------Server
> >
> >
> > If I'm not wrong, it seems that the proxy reads and processes all packets
> > coming from the TCP buffer, allocating memory dynamically when it needs
> to
> > store packets.
> >
> > In my case, when I start a greedy traffic source, the machine running the
> > optimizer does not limit the source flow and ends without memory. Could
> be
> > possible to limit the amount of memory dedicated to the "buffer"?
> >
> > What do you think about this? I'm very interested to know your opinion.
> You are right that this is something that can happen with WANProxy;
> unfortunately we do not have a mechanism for limiting either (1) the
> amount of buffered data, or (2) the size of the datastore.
> The first should be an easy fix, the second slightly less-so.  My
> current focus in WANProxy is on making it multi-threaded for a number
> of reasons, not least of which is for a user-space TCP/IP stack which
> is being added so that WANProxy can be used as a transparent proxy.
> Once that is finished, I have a few other high-priority items, but the
> two aforementioned are very high on my list.
> Thanks,
> Juli.
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