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From: Arne Vajhøj on 23 Mar 2010 20:58
On 23-03-2010 20:55, Roedy Green wrote:
> On Tue, 23 Mar 2010 07:03:30 -0700, Roedy Green
> <see_website(a)mindprod.com.invalid> wrote, quoted or indirectly quoted
> someone who said :
>> I was using 10 seconds. I'll try bumping up the TTL.
>
> no joy.

No surprise.

Assuming that you are using Windows, then you are
trying to use TCP through a router
where you have opened for UDP to a site that you
know supports ICMP.

Arne

From: EJP on 25 Mar 2010 23:55
On 23/03/2010 11:24 PM, Roedy Green wrote:
> InetAddress.isReachable always returns false. I am puzzled why.
>
> My router is set to pass UDP port 7 through. I can ping google.ca.

InetAddress.isReachable uses *TCP* port 7.
From: Roedy Green on 26 Mar 2010 11:13
On Fri, 26 Mar 2010 03:55:58 GMT, EJP
<esmond.not.pitt(a)not.bigpond.com> wrote, quoted or indirectly quoted
someone who said :

>> My router is set to pass UDP port 7 through. I can ping google.ca.
>
>InetAddress.isReachable uses *TCP* port 7.

I have them both open. Still no joy.
--
Roedy Green Canadian Mind Products
http://mindprod.com

If you tell a computer the same fact in more than one place, unless you have an automated mechanism to ensure they stay in sync, the versions of the fact will eventually get out of sync.
From: David Zimmerman on 26 Mar 2010 13:25


Roedy Green wrote:
> Roedy Green Canadian Mind Products
> http://mindprod.com

> If you tell a computer the same fact in more than one place, unless
> you have an automated mechanism to ensure they stay in sync,
> the versions of the fact will eventually get out of sync.

I phrase that as

Anything you write down in more than place,
is wrong in more than one place
From: Arne Vajhøj on 26 Mar 2010 22:00
On 26-03-2010 11:13, Roedy Green wrote:
> On Fri, 26 Mar 2010 03:55:58 GMT, EJP
> <esmond.not.pitt(a)not.bigpond.com> wrote, quoted or indirectly quoted
> someone who said :
>>> My router is set to pass UDP port 7 through. I can ping google.ca.
>>
>> InetAddress.isReachable uses *TCP* port 7.
>
> I have them both open. Still no joy.

It appears that google.ca is not listening on port 7, so
no surprise in that.

Arne
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