[Xastir] Xastir 1.3.xx and wx200d problems

[Brian D Heaton]

Sam,

	Do you have Ethereal on either of the Linux machines in question?  I
think you've got something not fully closing a socket.  If you can get a
trace of it you should be able to see what is being left hanging.

			THX/BDH


On Mon, 2004-04-26 at 21:10, Stefano Angelo Mario Lassini wrote:
> Over the past few weeks I have experienced failures in my xastir/wx200d setup 
> that would cause wx200d to stop responding after a couple of days or less of 
> uptime. If xastir was not connected to the network wx port wx200d would run 
> for many days at a time without problems.
> 
> I eventually traced the symptoms to the fact that the number of open sockets 
> to wx200d would increase to the point that several hundreds of socket at a 
> time were open to wx200d (or so appears by listing /proc/{wx200d PID}/fd. 
> Apparently every time that Xastir believes that the connectoin to wx200d is 
> down (due to lack of wx200d activity) it attempts to re-connect and in the 
> process a new socket is created and the old one is left hanging.
> 
> Once the number of sockets grows beyond the number of file descriptors 
> available to wx200d the daemon hangs, and needs to be killed and restarted.
> 
> I have tried to look at the code responsible for the networked weather 
> station, but I have to admit that my understanding of the structure of the 
> xastir code base is pretty weak... 
> 
> Can anyone provide me any insight on what is going on, and where to look to 
> possibly attempt to trace and fix this behaviour?
> 
> I have an Oregon scientific WMR-968 wirelessweather station that I do nt seem 
> to be able to connect to xastir directly (I tried several combinations of 
> baud rates with no sucess), so wx200d is my only alternative at the moment, 
> and I would also like to be able to use the wx200d daemon to upload wx data 
> to other applications in the future.
> 
> The above behaviour happens in 1.3.1, 1.3.2 and in a CVS update from last 
> week.
> 
> Thanks for the help,
> 
> Sam
> N8USY
-- 
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Brian D Heaton
Senior Network Engineer
Janus Research Group
(706) 791-8342
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