PDF shows empty when i get and write in web page

[a.manojkumar1987]

var http = require("http");

//var app = express();

var request = require("request");

http.createServer(function (req, res) {

request.post({url: "http://localhost:8080/jasperserver/rest_v2/login",

qs: {j_username: "jasperadmin", j_password: "jasperadmin"}

},

function(err, res1, body1) {

if(err) {

return console.error(err);

}

 

request.get({url:"http://localhost:8080/jasperserver/rest_v2/reports/reports/JREPORT.pdf",

qs: {j_username: "jasperadmin" , j_password:"jasperadmin"} },

function(error, response, body) {

// console.log(body);

res.writeHead(200 ,{'Content-Type': 'application/pdf'})

res.end(body);

 

 

});

});

}).listen(8081);

console.log("Server is running n 8081");

It returns the pdf page empty but when i run the rest_v2 it shows the pdf with data, please help