WAN Acceleration Techniques used in WANProxy?

Donald Gordon don at dis.org.nz
Tue Sep 15 18:18:31 PDT 2009


What would be really awesome and mostly-portable (and if I had the time 
I'd implement it) is gluing WANProxy and slirp (or similar) together to 
take a stream of packets, where possible turn it into higher level 
streams that WANProxy can deal with, then turning these back into 
packets at the remote end.  You could do this all in userspace, and most 
free unix-alikes have a tun/tap device or similar to hook this into a 
network.  Voila, instant drop in make this network link faster solution.


Juli Mallett wrote:
> Hi Kevin,
> Right now just dictionary compression.  Because connections are
> proxied through the TCP stack on both sides of a proxy, it is possible
> that any TCP improvements in e.g. Linux or FreeBSD network stack would
> be applied to the connection.  The goal is to keep WANProxy
> multi-platform and to not develop a large feature set that is
> restricted to one or two platforms, so any really specialized TCP
> modifications seem unlikely, but any semi-portable improvements (like
> disabling and reenabling Nagle when there is more data pending) could
> be implemented.  QoS and protocol-specific optimizations are possible,
> but I don't have the time to work on them and don't know anyone else
> who is looking at doing them with WANProxy.  Traffic Squeezer does
> some things with HTTP, but I can't imagine that it does anything
> particularly in the spirit of WAN Optimization (i.e. not caching)
> which would also be a marked improvement over dictionary compression.
> Thanks,
> Juli.
> On Tue, Sep 15, 2009 at 17:40, Jiachang Xu <xcoderz at gmail.com> wrote:
>> Hi, does anyone know what kind of WAN Acceleration Techniques is used in
>> WANProxy? I know that it uses dictionary compression to sent less data, but
>> I am interested to know what other techniques is used, such as flow control
>> by manipulating TCP headers to increase TCP size. This is for a project I am
>> doing for school, I am looking to examine a few WAN Acceleration products,
>> the techniques used, its performance, stability, etc.
>> --
>> Kevin Xu
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>> wanproxy at lists.wanproxy.org
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