Checking Internet connection on Vista

[Eric Chatonet]

Bernard,

Of course I can't send a GET request (or a LOAD): the software (I  
cross my fingers :-) will be used by hundred thousands of persons (I  
hope more :-)...
I'll try what I can get from a simple openSocket but I guess that  
HostNametoAddress built-in function uses it.
That's the problem...

Le 20 juin 08 à 18:07, Bernard Devlin a écrit :

> Maybe the most reliable time-critical way to check would be to open  
> your own
> socket on port 80 to something like www.google.com.  By setting the
> SocketTimeoutInterval to a low value you would find out quickly if the
> timeout occured without a response.  I'm thinking that you would  
> not even
> send a GET request, just see if the socket could be opened.
>
> bernard
>
> On Fri, Jun 20, 2008 at 4:52 PM, Eric Chatonet <
> eric.chatonet at sosmartsoftware.com> wrote:
>
>> Thanks for testing at your place: it's invaluable :-)
>> Tests I made were with the router connected but the ADSL modem  
>> disconnected
>> and I'm afraid it is the delay reason.
>>
>> Le 20 juin 08 à 17:45, Bernard Devlin a écrit :
>>
>>
>>  I done some further tests, and mostly I'm getting a result with  
>> the router
>>> disconnected of less than 30ms now.  I can't reproduce the case  
>>> where I
>>> got
>>> 14 seconds.  I had a look at socketTimeoutInterval and it seemed  
>>> to make
>>> no
>>> difference at all.  Still, if you are getting lengthy delays then  
>>> it looks
>>> like this is not an adequate way to get a speedy test to see if the
>>> internet
>>> connection is still alive.
>>>
>>> Bernard
>>>
>>> On Fri, Jun 20, 2008 at 3:53 PM, Eric Chatonet <
>>> eric.chatonet at sosmartsoftware.com> wrote:
>>>
>>>  Your allusion about SocketTimeoutInterval seems to be very well  
>>> thought
>>>> :-)
>>>> The problem is that I (the user) can't accept more than a 200 ms  
>>>> hang and
>>>> this could be not enough when he is regularly connected.
>>>> So this fails to address the problem :-(