On Thu, Apr 16, 2020 at 4:17 AM Sven Van Caekenberghe <sven@stfx.eu> wrote:

Hi,

This is a known problem: the standard NetNameResolver (which depends on some primitives) hangs when your network connection is bad (or in a dubious state).

This is very annoying, if your test is 'do I have an internet connection'.

This is the reason why I played with https://github.com/svenvc/NeoDNS doing a pure Pharo DNS client (based on datagrams) - this one does never hang. But doing a full DNS client is hard. BTW, this code base also contains a 'do I have an internet connection' test.

Sven

> On 10 Apr 2020, at 13:15, dario.trussardi65 <dario.trussardi65@gmail.com> wrote:
>
> Ciao,
>
>�� i have a Pharo 7.0.3 image run on Ubuntu system.
>
>�� Sometime the internet connection go down.
>
>�� In this status when i do the:
>
>�� NetNameResolver addressForName:�� 'www.esug.org'�� timeout: 1
>
>�� the system is busy for 20 seconds ( for any request ).
>
>�� The�� timeout: 1�� is not considered.
>
>�� Question:�� how i can test if the internet connection is up before submit any NetNameResolver request ?
>
>�� Googling in VisualBasic i found the ActiveConnection
>
>�� It return true if internet connection is active.
>
>�� Equivalent in Pharo - Gemstone ?
>
>�� Thanks,
>
>�� Dario