protected String getClientIpAddress(HttpServletRequest request) {
		String clientIp = request.getHeader("x-forwarded-for");
		if(clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
			clientIp = request.getHeader("Proxy-Client-IP");
		}
		if(clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
			clientIp = request.getHeader("WL-Proxy-Client-IP");
		}
		if(clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
			clientIp = request.getRemoteAddr();
		}
		return clientIp;
	}