How to store the visit user ip address in salesforce

Question

I have developed a simple registration page and given this page access to users through a force.com site. How can I store the visiting user's IP address in Salesforce?

Answer 1

Following may help:

String clientIP = ApexPages.currentPage().getHeaders().get('True-Client-IP');
if(clientIP == null || clientIP == ''){
    clientIP = ApexPages.currentPage().getHeaders().get('X-Salesforce-SIP');
}