package ru.ulstu.fc.user.service;

import jakarta.servlet.http.HttpServletRequest;

public final class IpAddressResolver {
    //private static final String CLIENT_IP_HEADER = "Client-IP";
    //private static final String FORWARDED_FOR_HEADER = "X-Forwarded-For";

    public static String getRemoteAddr(HttpServletRequest request) {
        String headerClientIp = request.getHeader("");
        String headerXForwardedFor = request.getHeader(HttpServletRequest.FORM_AUTH);
        if (request.getRemoteAddr().isEmpty() && !headerClientIp.isEmpty()) {
            return headerClientIp;
        }
        if (!headerXForwardedFor.isEmpty()) {
            return headerXForwardedFor;
        }
        return request.getRemoteAddr();
    }

}