any way to detect condition "connected to ISP but not internet"?

[Andre Garzia]

easiest thing is to ping your own server. Try to load a simple text
file from your server, if it doesn't load, then, you're not connected.
For all that matters, this is a good test and easy to implement.

On Tue, Jan 20, 2009 at 1:11 AM, Josh Mellicker <josh at dvcreators.net> wrote:
> I just thought I'd ask the many networking gurus here:
>
> It seems easy with Revolution to check if connected to the internet, if not
> connected, after a timeOutInterval, an error is returned and it can be dealt
> with, no problem.
>
> However...
>
> Here at our office, we got Time Warner cable internet a few months ago, and
> while it is speedy (20 mbits d/l!) every few weeks we encounter a strange
> and perhaps rare situation where:
>
> 1. we are connected to our ISP
>
> 2. but our ISP is not connected to the internet
>
>
> On OS X, network diagnostics show:
>
> Ethernet = green
> Network Settings = green
> ISP = green
> Internet = red
> Server = red
>
> When we encounter this "false connection" condition, a browser, rather than
> saying "cannot get web page because we're offline" will hang forever.
>
>
> The danger here that we should all be aware of, is that if you sell an app
> that, for example, checks for updates upon launch, if your customer has this
> weird connectivity situation, your app will freeze and the customer is
> unable to get past this and use the app they legitimately paid you for.
>
> Even if the connectivity problem is rare, this is a situation we want to
> avoid at any cost, so we have no automatic connection routines. If they
> initiate a network operation, and the app hangs, they can force quit and
> launch again, and not do that anymore now that they know better :-)
>
>
> So, I wondered if any of you had any experience, workarounds or ideas for
> detecting this "false connection" condition.
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