Re: xapFramework Hubs

["Michael McSharry" <mcs101main@xxxxxxx>]

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I received a similiar error again.  Exception failed in send thread. 
Objec=
t reference not set to an instance of an object.  It happened at 12:03 AM
a=
n in the middle of a burst of x10 requests that started at 12:00 to assure
=
that all sprinkler zones are off and some other start of day housekeeping.
=
While the error is different and result more severe with the loss of X10 f=
unctionality, this does seem to be related to the ability of the software
t=
o handle a message firehose.
----- Original Message -----=20
From: Kevin Hawkins=20
To: xAP_developer@xxxxxxx=20
Sent: Friday, August 20, 2004 2:08 AM
Subject: RE: [xAP_developer] xapFramework Hubs


I have the X10 connector running I will let you know if I see the same er=
ror you are reporting...




---------------------------------------------------------------------------=
-
From: Michael McSharry [mailto:mcs101main@xxxxxxx]=20
Sent: 20 August 2004 06:45
To: xAP_developer@xxxxxxx
Subject: Re: [xAP_developer] xapFramework Hubs


To give you some info about the service hub I stopped all xap applicati=
ons and started the hub service.  I observed with a viewer on a second
comp=
uter that the hub heartbeat appears.  I started the viewer on the same
comp=
uter as the hub service.  The left panel of the viewer showed itself, but
n=
othing in the right panel.  The viewer also produced a heartbeat on the
sec=
ond computer.=20

All that is perfectly correct and as expected - the Viewer app I am gue=
ssing is correctly running in a 'non hub' mode  ie the title bar shows xAP
=
Message Viewer rather than xAP Message Viewer (xFX hub) - are you saying
th=
ough that no other network devices ever appear in Viewer - either ones
loca=
l to that PC or remote ones on your network ? The fact that Viewer sees
its=
own heartbeat says it is using the hub and that it is working but they mig=
ht both be bound to the WAN interface.

I have all the xap applications configured with listening IP =3D 192.16=
8.0.1 and broadcast IP =3D 192.168.0.255=20

Not sure where that 'listening IP' is coming from or how you are config=
uring it (?) - is that the address of your LAN network card - if so what I
=
am guessing here is that the hub (as you suggested earlier) is binding to
t=
he WAN adaptor rather than the LAN one - Presumably this particular
machine=
then is the WAN gateway machine. This is different to my setup where my ro=
uter is the gateway. So you have one machine on your network that has this
=
issue - the WAN gateway one, but all others work OK ?  Maybe S we have to
d=
etect the cative LAN card better - or allow configuration when multiple
NIC=
cards are installed.
=20=20=20=20=20=20
If I use IP defaults then the WAN NIC is used rather than the LAN one.
I still do have the problem of duplicates that we investigated before.=
=20
I still have the problem of dropped messages if more than about 20 are =
blasted.  Dont know if problem is with the output queue not able to handle
=
the blast, the input queue at the receiving end, or routing in between.=20

I am running fairly heavy xAP traffic here and have never noticed dropp=
ed packets and I have never seen duplicate packets..Does anyone else see
th=
is ???

Seems like virtually everyong must be on an extended Holiday as communi=
cations in this group has almost dried up.=20

Summer is always a quiet time and there are now about 8 different xAP l=
ists which dilutes everything  - plus quite a lot of chatter on MSN etc -
o=
nce the temp drops a bit ( I would say the sun disappears but over the
last=
few weeks we have had nothing but rain) the traffic will probably perk up =
a bit.

Kevin
----- Original Message -----=20
From: Stuart Booth=20
To: xAP_developer@xxxxxxx=20
Sent: Thursday, August 19, 2004 2:08 PM
Subject: Re: [xAP_developer] xapFramework Hubs


On Thu, 19 Aug 2004 12:41:40 -0700, "Michael McSharry"
<mcs101main@xxxxxxx> wrote:

>Without the hardware interface you will not be able to replicate the=
failure.  It was running fine for hours then this error happened.  What yo=
u may be able to do, if you are so inclinded, is to understand why an
excep=
tion does not have graceful recovery.

--

I think we're talking about the X10 Connector here now? Not sure
there's a whole lot I can do about this one as I don't have any
source.

I would like to know what the problem with the Service version of the
Hub is compared to the others. I've had this running on my Server for
days now (I recently-ish rebooted) and it's still spinning away
happily. It's not related to the unresolved multiple messages and
multiple network interfaces by any chance. Probably not since the
others work fine.

Tracing is a bit haphazard in these apps rather than well integrated =
-
something I need to change. I add it in as I encounter problems.

S
--=20
Stuart Booth <stuart@xxxxxxx>
xAPFramework.NET - a xAP software development framework for .NET

http://www.xapautomation.org/ 
     http://www.xapframework.net/