Proxomitron reduces RWIN to 32768

[JJoe]

z12 Wrote:

JJoe Wrote:So then it appears that only XP/Home/SP2 users with Proxomitron directly connected to the net are experiencing this (good idea Mike).

Not Exactly.

I'm seeing the wrong RWIN reported at speedguide as long as I'm connecting directly via proxo.

proxo-->speedguide = wrong RWIN reported

So then you don't have XP/Home?
XP/Home/SP2 and proxo-->speedguide = wrong RWIN reported
is what I meant.

z12 Wrote:As a side note, I am seeing alot of 4xx Response codes in proxo's log window when I'm chaining thru AnalogX proxy especially at (CastleCops.com).


My thought right now is proxo doesn't support "TCP 1323 Options". This would limit RWIN to 65535 (2^16).


To test this, I set my RWIN to 38272 and disabled the "TCP 1323 Options" in speedguides TcpOptimizer program.

After rebooting, I tested again and speedguide did not report the RWIN that I had entered (it reported 39xxx, I don't remember exactly).

So now I wonder about the validity of the speedguides results.

At this point, I think I'm going to download a packet sniffer and look for myself.


Mike

Hmmm. The number reported may be rounded up to an even multiple of MSS. Scaling does seem to work.
But I have been wondering about the test.

Can you find a speed difference?
Not that I doubt Tony Tough's words but my helper did not.

This is like the only time I've ever wanted XP on my computer. lol

--
JJoe