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[Bayonne-devel] RE: [Bayonne-dialogic] bayonne locks a line in state "st
From: |
Julien Chavanton |
Subject: |
[Bayonne-devel] RE: [Bayonne-dialogic] bayonne locks a line in state "step" |
Date: |
Tue, 22 Feb 2005 10:06:42 -0500 |
Interresting , this should be posted to bayonne-devel, our fellow working with
ccscript
should be aware about this.
Thanks,
Julien
-----Original Message-----
From: infos chez fdrconseil [mailto:address@hidden
Sent: Sat 2/19/2005 09:43 AM
To: infos chez fdrconseil; Julien Chavanton; Jonathan Wolfe;
address@hidden
Cc: David Sugar
Subject: Re: [Bayonne-dialogic] bayonne locks a line in state "step"
The script given as an exploit to reproduce the problem
(bugSortantRedem.scr)
has a bug in it.
Let me explain and let's learn something :
Remeber the following lines in the script :
start.group did bugSortantRedem::Calling
goto ::Waiting
The script starts a new thread (start.group ....) and then "goto" a
block
where we are waiting for an event coming from the started child.
Under some circumstances (heavy load), the child is running faster than
the
parent and the event is sent by the child BEFORE the parent is going to
the ::Waiting block.
The strange thing is that [starting a thread + Dialing + reporting an
event to the parent]
is executed faster than a simple "goto"... but it happens !!
Adding the following code in the ::Loop block fixes the problem :
^event
if %session.eventsendermsg == "OK"
then
goto ::WaitForEnd
else
goto ::Loop
endif
The lesson is : when you are waiting for an event, never think it'll be
raised LATER.
FdR (*#)
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- [Bayonne-devel] RE: [Bayonne-dialogic] bayonne locks a line in state "step",
Julien Chavanton <=