Did you consider also tuning SO_SNDBUF of the sending application?
"Sending application" is a commertial product, which is servicing many other
transmissions, so I can't adjust it to slow transmissions only. In fact this
problem is becouse of different calculation of throughput on L and R side of
stunnel, so in my opinion I have to find solution on this server.
MHO Windows is probably not the best server platform...
You're right. I will try the same with stunnel on RedHat.
-----Oryginalna wiadomość-----
From: Michal Trojnara
Sent: Friday, July 10, 2015 11:31 PM
To: [email protected]
Subject: Re: [stunnel-users] problem with buffering data on stunnel
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Hash: SHA1
On 10.07.2015 20:17, wujot/Adalbert wrote:
But unencrypted session on path between Stunnel server and hi-speed
end server (both in LAN) is using TcpWindowSize on level 64KB -
131KB
Did you consider also tuning SO_SNDBUF of the sending application?
(in Windows 2008 or newer it is calculated automatically). So I
steel have at least 64KB buffer in stunnel.
IMHO Windows is probably not the best server platform...
Is there any possibility to force stunnel to use on faster part of
connection (LAN side) the value of TcpWindowSize similar to
calculated on slower part (on WAN side)?
I don't think such tricks are possible with BSD sockets.
BTW: You can also change BUFFSIZE in common.h and rebuild stunnel.
Best regards,
Mike
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