cps.es6

import {get, request} from "http";
import {readFile, writeFile} from "fs";

let host = "localhost";
let port = 8917;

get({host, port}, response => {
    let body = "";

    response.on("readable", () => {
        body += response.read();
    });

    response.on("end", () => {
        writeFile(__dirname + "/foo", body, () => {
            readFile(__dirname + "/foo", (err, contents) => {
                writeFile(__dirname + "/bar", contents.toString().split("").reverse().join(""), () => {
                    request({host, port, method: "POST"}, res => {
                        console.log("posted file");
                    }).end();
                });
            });
        });
    });
});

server.es6

import {createServer} from "http";
import {createReadStream} from "fs";

let server = createServer((req, res) => {
    console.log("request received");
    if ("get" === req.method.toLowerCase()) {
        createReadStream(__filename).pipe(res);
    }
    else {
        res.writeHead(201);
        res.end("posted");
    }
});

server.listen(8917);