Sam,

On Sun, Mar 16, 2014 at 8:04 AM, Sam Michaels <sam@samtheham.org> wrote:

> You can look for X-Client-Update to see if the check in was logged.  Other
> information can be passed in the header, too.
>
> Errors are trapped so that it will always display the IP address and any
> error information is contained in the headers.
>
> Hope you find this useful.
>

Thanks for your effort.

However the current idea is to phase out reliance on centralized external
services completely in favor of peer-based address detection.

See https://github.com/bitcoin/bitcoin/pull/3461

Wladimir