com.lifeonwalden.app.gateway.auth.util.RemoteAddressUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of app-gateway-auth Show documentation

The newest version!

/*
 *    Copyright 2018 CManLH
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.lifeonwalden.app.gateway.auth.util;

import javax.servlet.http.HttpServletRequest;

public interface RemoteAddressUtil {
    static String getIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");

        if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
            ip = request.getHeader("Proxy-Client-IP");
        }

        if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }

        if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }

        if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
            ip = request.getRemoteAddr();
        }

        return ip;
    }
}