Get and Set a Single Cookie with Node.js HTTP Server

Question

I want to be able to set a single cookie, and read that single cookie with each request made to the nodejs server instance. Can it be done in a few lines of code, without the need to pull in a third party lib?

var http = require('http');  http.createServer(function (request, response) {   response.writeHead(200, {'Content-Type': 'text/plain'});   response.end('Hello World\n'); }).listen(8124);  console.log('Server running at http://127.0.0.1:8124/'); 

Just trying to take the above code directly from nodejs.org, and work a cookie into it.

Answer 1

There is no quick function access to getting/setting cookies, so I came up with the following hack:

const http = require('http');  function parseCookies (request) {     const list = {};     const cookieHeader = request.headers?.cookie;     if (!cookieHeader) return list;      cookieHeader.split(`;`).forEach(function(cookie) {         let [ name, ...rest] = cookie.split(`=`);         name = name?.trim();         if (!name) return;         const value = rest.join(`=`).trim();         if (!value) return;         list[name] = decodeURIComponent(value);     });      return list; }  const server = http.createServer(function (request, response) {     // To Read a Cookie     const cookies = parseCookies(request);      // To Write a Cookie     response.writeHead(200, {         "Set-Cookie": `mycookie=test`,         "Content-Type": `text/plain`     });      response.end(`Hello World\n`); }).listen(8124);  const {address, port} = server.address(); console.log(`Server running at http://${address}:${port}`); 

This will store all cookies into the cookies object, and you need to set cookies when you write the head.