On Mar 14, 6:15 am, Robb S <[email protected]> wrote:
> I use Google Static maps to display individual maps as part of a site
> for mobile users in Japan.  Everything worked fine when I first set it
> up, but now I'm noticing that I often get the usage-quota image
>
> Does anyone have any ideas?

I'd guess that Google are blocking the internet-facing IP address, and
that NTTDoCoMo use NAT within their own network. Orange UK do the same
-- each phone has a 10.x.x.x address and a very limited number of
external addresses are used, maybe even only one.

Orange use the X-FORWARDED-FOR header, which allows identification of
the "real" user at the end of the line, and every well-behaved proxy
should do this. Perhaps NTTDoCoMo don't.

At the end of the day the developers here can only guess at how Google
do their counting. Google aren't going to publish details and
encourage circumvention! It is done by IP address, and they have said
that they know about this sort of proxy. So I would guess that it
depends on the correct forwarding header being used.

There are sites which will show you the headers received. Mike listed
http://centralops.net/asp/co/BrowserMirror.vbs.asp

Andrew
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