[Xastir] Running wxnowsrv.pl

[russo at bogodyn.org]

On Tue, Feb 20, 2018 at 05:33:11PM -0500, we recorded a bogon-computron collision of the <joe at laferla.ca> flavor, containing:
> Hi Tom
> 
> No other messages, just what I mentioned.  
> 
> When I run the script on the machine which has the wx station, it all works.  I can do it that way, but it would be cleaner for me if I didn???t have to.

The script was deliberately written so that it runs on the machine with the
weather station, where the wxnow.txt file is produced, precisely to avoid 
having to copy the wxnow.txt file or run file sharing systems (nfs or 
otherwise) to get at it.  It's leveraging the "networked WX station" code
that already existed in Xastir, but which had previously been limited to 
Davis weather stations that fed the Meteo program (and a database).

Barring someone having the time to code up native wxnow.txt support in Xastir,
this is as clean as it gets.  And even if you did have that support, you'd
have to deal with the fact that your wxnow.txt file is getting produced on
a different machine than your Xastir instance.

> From: Tom Russo
> Sent: Tuesday, February 20, 2018 5:25 PM
> To: Xastir - APRS client software discussion
> Subject: Re: [Xastir] Running wxnowsrv.pl
> 
> On Tue, Feb 20, 2018 at 05:14:03PM -0500, we recorded a bogon-computron collision of the <joe at laferla.ca> flavor, containing:
> > I am trying to run wxnowsrv.pl to connect xastir to my weather station.  I am using the following command
> > 
> > ./wxnowsrv.pl  //192.168.1.20/home/pi/CumulusMX/wxnow.txt 60
> 
> This is wrong.  The script is not set up to fetch the wxnow.txt file from 
> another machine on the network, it's set to read a local file, and *provide*
> its data to another machine on the network.  It knows nothing windows-style 
> network share syntax like you're using.  I'm surprised you didn't get an
> error about not being able to read the file.
> 
> You need to run the script on the machine where the wxnow file lives 
> (192.168.1.20), and the path would be "/home/pi/CumulusMX/wxnow.txt".
> 
> When you do it this way, the pi with your weather station is running a simple
> server daemon that your other pis on the network (e.g., the one with xastir)
> can connect to to get weather data.  That daemon listens on port 5500 by 
> default (unless you give an extra argument with the port number).
> 
> > But am getting the following error message
> > 
> > Can't call method "accept" on an undefined value at ./wxnowsrv.pl line 155.
> 
> This suggests that the call that creates a new socket a few lines up from line
> 155 is failing.  $listen should be defined there, and so $listen->accept
> should work.  If you're getting this, the problem is somewhere else.
> 
> > My wx station is on  192.168.1.20 and xastir is on 192.168.1.16
> > 
> > Maybe my format to refer to the other pi with an ip address is wrong?
> 
> It is wrong, but you clearly have some other issue, too, because the 
> network port initialization seems not to have worked.  Are you getting any
> other error messages from the program besides the one about the undefined
> value.
> 
> -- 
> Tom Russo    KM5VY
> Tijeras, NM  
> 
>  echo "prpv_a'rfg_cnf_har_cvcr" | sed -e 's/_/ /g' | tr [a-m][n-z] [n-z][a-m]
> 
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-- 
Tom Russo    KM5VY
Tijeras, NM  

 echo "prpv_a'rfg_cnf_har_cvcr" | sed -e 's/_/ /g' | tr [a-m][n-z] [n-z][a-m]