Problem Interacting With Mojang Authentication Server - node.js

Question

I am trying to get a client token from the Mojang Authentication API, which can be found here https://wiki.vg/Authentication. However, whenever I try to make a request, I get the following response:
{error: 'ForbiddenOperationException', errorMessage: 'Forbidden'}
The API indicates this is because my credentials are invalid but the errorMessage that I am getting does not match any of their examples. I tried doing the same request through python's Requests module, and it worked well, which leads me to believe I am not sending my https request properly. I am aware there is probably something very basic I am overlooking, but I would appreciate it if someone tells me what I am doing wrong.
Here is my code:
Python Code that works:
import requests
url = 'https://authserver.mojang.com/authenticate'
data = {"username":"--username--", "password":"--password--"}
res = requests.post(url, json=data)
print(res.json())
Javascript Code that Doesn't Work:
var https = require('https');
var options = {
host: 'authserver.mojang.com',
path: '/authenticate',
method: 'POST',
headers: {"username":"--username--","password":"--password--"}
}
https.request(options, (res)=>{
var body = ''
res.on('data', (d)=>{
body+=d;
});
res.on('end', ()=>{
resp = JSON.parse(body);
console.log(resp);
});
}).end();

Answer 1

The problem is that you're sending your credentials as HTTP headers directly instead of as POST data. Try this instead:
var https = require('https');
var data = JSON.stringify({"username":"--username--","password":"--password--"})
var options = {
host: 'authserver.mojang.com',
path: '/authenticate',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': data.length
}
}
var req = https.request(options, (res)=>{
var body = ''
res.on('data', (d)=>{
body+=d;
});
res.on('end', ()=>{
resp = JSON.parse(body);
console.log(resp);
});
});
req.write(data);
req.end();