How can I find out the user's IP address in flex?

I would like to get the user开发者_StackOverflow中文版's IP locally without any invoking any service.

Looking for a purely client side solution.

In general this problem is not solvable because the client computer might not even know its own external IP address. This happens when the client is behind a NAT or some other kind of firewall.

Note that many different client machines might share the same external IP address, and also different client machines might have the same internal IP address but different external IP addresses. Or, I can even imagine a situation where two different clients have the same internal and external IP addresses.

If you would explain why you believe you need this information, another solution to your actual problem might be possible.