test.js

 var http = require('http');
 var request = require("request");
 var Iconv = require('iconv').Iconv;
 var iconv = new Iconv('EUC-KR', 'UTF-8//TRANSLIT//IGNORE');

var options = {
    url: 'https://khuis.khu.ac.kr/java/servlet/khu.cosy.login.loginCheckAction',
    port: 80,
    method: 'POST',
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
    },
    body:"user_id=2013104056&password=KIMho0715@#&RequestData="
};


var req = request(options);

var cookie = {};

function setCookie(cookies) {
    for (var i in cookies) {
        var c = cookies[i];
        var tokens = c.split(";");
        for (var j in tokens) {
            var t = tokens[j].trim();
            var tt = t.split("=");
            cookie[tt[0]] = tt[1];
        }
    }
}

function getCookie() {
    var str = "";
    for (var i in cookie) {
        str += i + "=" + cookie[i] + "; ";
    }
    return str;
}

function getCookieConsole(){
    var str = "";
    for (var i in cookie) {
        str += i + "=" + cookie[i] + "; " + '\n';
    }
    console.log(str);
}

req.on('response', function(res) {
    res.setEncoding('utf8');
    res.on('end', function () {
        setCookie(res.headers["set-cookie"]);
        console.log("cookie1 : "+ getCookie());
        options = {
            url: 'https://khuis.khu.ac.kr/java/servlet/controllerCosy?' +
            'action=17&WID=hsip1004&Pkg=JSP&URL=' +
            'JSP./jsp/hssu/infospace/SugangSearchPrintList.jsp[(QUES)]auto=off',
            port: 80,
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Cookie' : getCookie()
            }
        };

        var req2 = request(options);
        req2.on('response', function (res) {
            res.setEncoding('utf8');
            res.on('end',function () {
                console.log("cookie2 : " + JSON.stringify(res.headers));
                setCookie(res.headers["set-cookie"]);

                options = {
                    url: 'https://khuis.khu.ac.kr/java/servlet/controllerHssu',
                    port: 80,
                    method: 'POST',
                    headers: {
                        'Host' : "khuis.khu.ac.kr",
                        'Content-Type': 'application/x-www-form-urlencoded',
                        'Cookie' : getCookie()
                    },
                    body:"action=655&auto=on&lectYear=2017&lectTerm=20"
                };

                var req3 = request(options);
                req3.on('response', function (res) {
                    var output = "";
                    res.setEncoding('utf8');

                    res.on('data', function (chunk) {
                        output += chunk;
                    });

                    res.on('end', function () {

                        setCookie(res.headers["set-cookie"]);
                        console.log("cookie3first : " + JSON.stringify(res.headers));
                        console.log("output : " + output);
                        console.log("cookie3 : ");
                        getCookieConsole();
                    });

                });

            });
        })

    });

}).on('error', function(err) {
    console.log(err);
});














//
//
//
//
//
//  var options = {
//     url: 'https://khuis.khu.ac.kr/java/servlet/khu.cosy.login.loginCheckAction',
//     port: 80,
//     method: 'POST',
//     headers: {
//         'Content-Type': 'application/x-www-form-urlencoded'
//     },
//      encoding: null,
//     body:"user_id=2013104056&password=KIMho0715!@&RequestData="
// };
//
// var req = request(options);
// req.on('response', function (res) {
//     var output = new Buffer([]);
//
//     res.on('data', function (chunk) {
//         output = Buffer.concat([output, chunk]);
//     });
//
//     res.on('end', function () {
//
//
//         console.log(iconv.convert(output).toString());
//         console.log(res.headers);
//     });
//
//
// });