Nginx 클 러 스 터 + websocket 웹 socket 클 라 이언 트 의 실제 IP 가 져 오기

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpSession;
import javax.websocket.HandshakeResponse;
import javax.websocket.server.HandshakeRequest;
import javax.websocket.server.ServerEndpointConfig;
import javax.websocket.server.ServerEndpointConfig.Configurator;

import org.apache.commons.lang.StringUtils;


public class HttpSessionConfigurator extends Configurator {

    @Override
    public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
    	HttpSession httpSession = (HttpSession) request.getHttpSession();
        sec.getUserProperties().put(HttpSession.class.getName(), httpSession);
        Map> headers = request.getHeaders();
        List addressMap = new ArrayList();
    	String realAddress;
    	try {
    		addressMap = headers.get("x-forwarded-for");  
    		if (addressMap == null || addressMap.size() == 0) {  
    			addressMap = headers.get("Proxy-Client-realAddress");  
    		}  
    		if (addressMap == null || addressMap.size() == 0) {  
    			addressMap = headers.get("WL-Proxy-Client-realAddress");  
    		}  
    		if (addressMap == null || addressMap.size() == 0) {  
    			realAddress = "";
    		} else{
    			realAddress = addressMap.get(0);
        		if(StringUtils.isEmpty(realAddress)){
        			realAddress = "";
        		}
    		}
    		
    	} catch (Exception e) {
    		realAddress = "";
    	}
        sec.getUserProperties().put("realAddress", realAddress);
    }
}

@ServerEndpoint(value="/ws/{sid}/{stype}",configurator = HttpSessionConfigurator.class)

 @OnOpen
    public void onOpen(Session session,EndpointConfig config ,@PathParam("sid") String sid, @PathParam("stype") String stype) {
    	String  realAddress =  (String) config.getUserProperties().get("realAddress");
    	this.session = session;
        webSocketSet.add(this);     //  set 
        addOnlineCount();           //    1
        LogUtil.getLoger("xxxx.ws").info("        :"+realAddress+"/"+sid+"/"+stype+",       " + getOnlineCount()); 
        this.sid=sid;
        try {
        	 sendMessage("connected");
        } catch (IOException e) {
        	LogUtil.getLoger("cnyy.ws").info("websocket IO  ");
        }
    }