[THIN] Re: sessions not reconnecting.
- From: Miguel-Guzman@xxxxxxx
- To: thin@xxxxxxxxxxxxx
- Date: Thu, 8 Jul 2004 14:09:26 -0400
After some testing I was able to recreate the problem constantly. When I
loose connection and attempt to reconnect instantly; I get a new session.
If I click on cancel on the reconnect window, wait one minute, then try to
connect I get my Disconnected session. I checked the servers and I do have
these registry entries; I might have to decrease the counter slightly, but I
don't want to cause additional headaches.
Could I, instead, increase the time it takes to get the reconnect pop-up
window?
Thanks everyone for your support!
Miguel
_____
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Rick Mack
Sent: Tuesday, July 06, 2004 5:43 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: sessions not reconnecting.
Hi Miguel,
It takes time for the server to detect a session has been disconnected, so
if the client reconnects too quickly the server won't realise that there's
an existing (nearly) disconnected session and will create a new one. The
fact that things work okay %75 of the time means it's almost working okay.
In an NT 4/MF 1.8 environment, you will have to enable ICAKeepalives by
creating some registry values on each server.
ICAKeepalive are enabled by creating the value:
HKLM\SYSTEM\CurrentControlSet\Control\Citrix\IcaEnableKeepAlive, reg_dword,
0x1
and the KeepAlive timer is controlled by the value:
HKLM\SYSTEM\CurrentControlSet\Control\Citrix\IcaKeepAliveInterval,
reg_dword, 0x3C (60 decimal)
This value is in seconds and 60 seconds is a good place to start. Much less
and you risk disconnecting session every time there's a minor comms hiccup.
The following policy could also be added to your machine policy template to
make things easier:
POLICY "ICA KeepAlives"
KEYNAME "SYSTEM\CurrentControlSet\Control\Citrix"
PART "IcaEnableKeepAlive" CHECKBOX
VALUENAME "IcaEnableKeepAlive"
DEFCHECKED
END PART
PART "IcaKeepAliveInterval (secs)" NUMERIC
VALUENAME "IcaKeepAliveInterval"
DEFAULT "60"
MAX 600
MIN 1
END PART
END POLICY ; ICA keepalives
regards,
Rick
Ulrich Mack
Volante Systems Ltd
18 Heussler Terrace, Milton 4064
Queensland Australia.
Ph: +61 7 3246 7704
email: rmack@xxxxxxxxxxxxxx
web: www.volante.com.au
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Miguel-Guzman@xxxxxxx
Sent: Wednesday, 7 July 2004 4:29 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] sessions not reconnecting.
Hi All,
I am trying to figure out what could be the reason why some sessions will
not reconnect but instead just create a new session on another server.
I have 20 servers (MF1.8, NT4) and they are in 5 different subnets; they all
provide the same published application which is load balanced across all 20
servers. Our wireless users are having problems when they loose connection
(walk in an elevator for example) when they try to reconnect they just get a
new session instead.
I do know:
It does not happen always, I'd say 75% of the time the reconnect as they
should.
When it happens, they always connect to a different server and the server
they were previously on has a disc session listed.
Thank you for any insight.
There is a fine line between "hobby" and "mental illness"
Miguel Enrique Guzmán
Network Analyst I
Sarasota Memorial Health Care System
<http://maps.yahoo.com/py/maps.py?Pyt=Tmap&addr=1700+South+Tamiami+Trail&csz
=Sarasota%2C+FL++34239&country=us> 1700 South Tamiami Trail
Sarasota, FL 34239
<mailto:Miguel-Guzman@xxxxxxx> Miguel-Guzman@xxxxxxx
<http://www.smh.com> http://www.smh.com
tel:
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mobile:
(941) 917-7084
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