Salesforce Apex Networking Utils

NetworkingUtils.cls

public without sharing class NetworkingUtils {
    
    public static String getCurrentUserIPAddress() {

        Map<String, String> headersMap = ApexPages.currentPage().getHeaders();  

        // True-Client-IP has the value when the request is coming via the caching integration.
        String ipAddress = headersMap.get('True-Client-IP');
 
        if (String.isEmpty(ipAddress)) {
            // X-Salesforce-SIP has the value when no caching integration or via secure URL.
            // get IP address when no caching (sandbox, dev, secure urls)
            ipAddress = headersMap.get('X-Salesforce-SIP');
        } 
 
        if (String.isEmpty(ipAddress)) {
            // get IP address from standard header if proxy in use
            ipAddress = headersMap.get('X-Forwarded-For');
        } 
 
        return ipAddress;
    }
    
    public static String getSourceIPAddress() {
        return Auth.SessionManagement.getCurrentSession().get('SourceIp');
    }
}