Bob of course you’re right - in my particular case, anyway, I just want to know
if I can access me chosen server or not.
But one could certainly imagine programs that would want to know if they were
wasting their time offering their users a broader internet access - I mean any
program that allows the user to specify addresses (like a browser does) would
want more of an “is there or isn’t there?” approach. On my Mac, the Apple
browser Safari can announce “you are not connected to the internet”. Maybe it
just pings a trusted source and waits for a reasonable time for the reaction.
Anyway what I noticed in my little experiment was that the reaction of the
script when the internet wasn’t available was very rapid (certainly less than
half a second), which means that just trying to get the file and then looking
for an error response would probably be OK for a human user, since there is no
As you see, I am reluctant to do anything that’s at all complicated!
> On 2 Mar 2018, at 16:47, Bob Sneidar via use-livecode
> <email@example.com> wrote:
> Hi Graham.
> Whether or not you are connected to the internet isn't really the issue, is
> it? All that means is that you have a route to the WAN port of your edge
> router. I mean, the real issue is finding out if you can reach a particular
> server on a particular port using DNS, or else a given IP address, whether or
> not it is "on the internet". That is I think, what you really mean.
> The code I posted, while it has some exterraneous code dependent on sqlYoga
> calls, neverless is a framework for doing that.
> 1. Outer loop to allow user to retry (not strictly necessary but it lets the
> user attempt to fix the problem before dumping him).
> 2. Inner loop to open socket to prescribed server (Not necessary either, but
> you may want to check multiple times for the open socket in case of slow
> connections, and timeout after x tries).
> Bob S
>> On Mar 2, 2018, at 03:44 , Graham Samuel via use-livecode
>> <firstname.lastname@example.org> wrote:
>> I’m really surprised there isn’t a foolproof way to find out if one’s device
>> is connected to the internet or not.
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