getting the user's (internet, not local network) IP address

[Alex Tweedly]

On 14/05/2010 20:17, Jeff Massung wrote:
>
> This still doesn't [fully] work. While not the local IP address, you'd still
> have to perform NAT traversal in order to do any actual communication with
> the client machine (read: anything useful).  At best, with this IP address
> you can find out the general county/city the client machine is located in.
>    
You can't even do that fully reliably. It gets fooled by VPN connections 
and multi-homed campus networks, as well as other obscure configs.

-- Alex.