[vpn-help] Fwd: Internet connection dies after some minutes of heavy download traffic

[Matthew Grooms]

On 6/11/2010 7:55 AM, Uracs Tamás wrote:
> Hi Matthew,
>
> I just had a network loss with the lwf8 build.
>

Hi Tamas,

Thanks for testing. I'm a little disappointed that we aren't closer to 
fixing this issue yet. Here are three new builds to try. I went back to 
the Microsoft example driver and copied the send receive path functions 
into our driver for testing ...

http://www.shrew.net/download/vpn/vpn-client-2.1.6-lwf-9.exe
http://www.shrew.net/download/vpn/vpn-client-2.1.6-lwf-10.exe
http://www.shrew.net/download/vpn/vpn-client-2.1.6-lwf-11.exe

lwf9 - Both the send and receive functions are replaced with MS sample 
passthru functions. If we still see a problem with this build, then we 
need to consider that the problem may not be the fault of our driver.

lwf10 - The receive functions are replaced with MS sample functions. If 
we see a problem with this build, there may be an issue with breaking up 
the send NBLs before processing ( completely legal according to MS docs ).

lwf11 - The send functions are replaced with MS sample functions. If we 
see a problem with this build, there may be an issue with breaking up 
the receive NBLs before processing ( completely legal according to MS 
docs but re-linking is required when ownership is returned to a caller 
under low resource conditions ).

I also left the driver debug output enabled so it can be captured with a 
utility such as debugview ...

http://technet.microsoft.com/en-us/sysinternals/bb896647.aspx

If lwf9 works correctly, but lwf10 or lwf11 exhibits the issue, please 
capture the output and forward it to me. I would advise against doing 
this until you determine which package ( 10 or 11 ) is suspect. It will 
slow down your system and potentially alter the outcome of your tests. 
With any luck, we may see something interesting in the logs.

Thanks again for your help. I look forward to hearing the results.

-Matthew