Fix getting IP address through cloudflare proxy

ip_utils/ip_utils.go

@@ -175,9 +175,9 @@ func GetRequestSourceIP(proxyRequest *events.APIGatewayProxyRequest, websocketRe
 			VerifyCloudflareSourceIP(requestSourceIP) {
 			forwardedForHeaderIPs := strings.Split(forwardedForHeader, ",")
 
-			if len(forwardedForHeaderIPs) > 0 {
-				// Use the first IP as the source IP
-				headerSourceIP := strings.TrimSpace(forwardedForHeaderIPs[len(forwardedForHeaderIPs)-1])
+			if len(forwardedForHeaderIPs) > 1 {
+				// Use the second-to-last IP – the last IP will be the Cloudflare proxy's IP
+				headerSourceIP := strings.TrimSpace(forwardedForHeaderIPs[len(forwardedForHeaderIPs)-2])
 				return headerSourceIP
 			}
 		}