TSNet error 6

[Ralph DiMola]

J,

I have run into many network issues on mobile. The chance that the user
might have a weak cell/wifi signal, move from cellular==>wifi or
wifi==>cellular is higher than one would think. This would be my first
guess. I always ask the user if Safari/Chrome is serving up pages. 99% of
the time network funnies are caused by weak/changing network access. The
amount of error checking and combinations thereof has been very challenging.
The first thing I do before any network access is to ping my server with a
https request to a LC backend server script that returns "OK". I set the
timeout for 2 seconds. If the returned data is not "OK" or take more than 2
seconds then I put the app into off-line mode. I try to ping the server
every time the users does "x" or the user's action again need network access
and see if the network is back online or fast enough.

Ralph DiMola
IT Director
Evergreen Information Services
rdimola at evergreeninfo.net

-----Original Message-----
From: use-livecode [mailto:use-livecode-bounces at lists.runrev.com] On Behalf
Of J. Landman Gay via use-livecode
Sent: Friday, September 01, 2017 4:42 PM
To: Bob Sneidar via use-livecode
Cc: J. Landman Gay
Subject: Re: TSNet error 6

This is for an Android app that can be run from anywhere, so I don't have
control over the routers or servers. (And yeah, I didn't quite get
everything you were talking about, I'm a network novice.)

The apps run fine for most people and only get this error with a few users.
I think you're basically saying there's no cure, right?

If the web site has a static IP and the Android app uses that instead of a
domain name, will that fix it? The app is communicating with a database on
the web server.


On 9/1/17 12:12 PM, Bob Sneidar via use-livecode wrote:
> That is a DNS error. If referring to a host, you can use the NetBIOS name
locally, the FQDN locally or remotely, or the IP number (which might change
so that is always a bad idea).
> 
> Now if the host name is NetBIOS, a number of things can go wrong in a
non-domain environment. With a domain server acting as your local DNS, it
will resolve NetBIOS names to their FQDN equivalents via the WINS service.
Barring that, NetBIOS name resolution falls back on an election process,
where some windows computer is elected as the Master Browser, which is then
responsible for tracing all devices on the network and their current IP
addresses.
> 
> If it happens to be a regular workstation, and it is set to go to sleep
after a certain amount of time, well another device has to become the master
browser, and it won't know about the  server in question until it requests
the current master browser and it might not do that for some time. See the
problem?
> 
> So there are a couple ways around that. First you can configure the local
router with a static DNS entry, and make sure the primary DNS server listed
is that router. Alternately you can edit the hosts file on each workstatino
and make a static entry there. The latter is probably going to be the most
reliable, but starting with windows 7 I think that file is locked, so it
requires elevated privileges.
> 
> Sucks huh? The best thing is to have a real DNS server locally (every
router these days does this but not everyone configures their routers
correctly) and then via the command line you *should* be able to register
with the DNS server, but I'm not sure how.
> 
> Hope that is not too much.
> 
> Bob S
> 
> 
>> On Sep 1, 2017, at 09:40 , J. Landman Gay via use-livecode
<use-livecode at lists.runrev.com> wrote:
>>
>> I have two apps that normally work fine but in both an occasional user
will get an error "TSNeterr : (6) could not resolve host". What would be the
cause of this sporadic problem? We're not sure what to tell these users.
>>
>> --
>> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
>> HyperActive Software           |     http://www.hyperactivesw.com
> 
> 
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-- 
Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com

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