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Nathan Toone wrote:
>Any pointers on going about doing this?

The best I can tell you is to check if the default route(1) is present.=20
That covers some 90%(2) of the cases. The other 10% are people with=20
default routes present but no Internet, and people with no default route=20
but Internet connectivity.

How you will do that, I don't know. You could try some low-level ioctls in=
=20
order to read the routing table. Or you could try and parse the output of=20
`/sbin/route -n` or `netstat -rn`. I am sure you will have a nice time=20
figuring out all the possible formats for all platforms you want to run=20
the code on.

(1) default route =3D route with a /0 (0.0.0.0) netmask
(2) 78% of the statistics are invented

Another solution would be to try and do whatever you want, or load=20
Google's homepage. If it fails, it's likely connectivity is down.

=2D-=20
  Thiago Macieira  -  thiago (AT) macieira (DOT) info
    PGP/GPG: 0x6EF45358; fingerprint:
    E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358

5. Swa he g=C3=A9anhwearf t=C3=B3 timbran, and hwonne he c=C3=B3m, l=C3=A1!=
 Unix cw=C3=A6=C3=B0 "Hello,=20
World". =C7=BCfre =C7=BDghwilc w=C3=A6s gl=C3=A6d and seo woruld w=C3=A6s f=
r=C3=A9o.

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