Using Variable In JSON node.js

Question

I am writing some code that allows me to send messages back and forth from two node instances using HTTP & Express.

Each client generates a UUID type of identification and then sends it to the main server for storage and authentication.

Here is the client, you can see at the bottom that it generates what i beleive to be a json string, i assign a variable before that contains an ID, i am trying to use this ID to send to the server for proccessing.

Client.js

var request = require('request');
var sendservlet = request.post;
var fs = require('fs');
var path = require('path'); 
var crypto = require('crypto');

if (fs.existsSync('foo.txt')) {
    console.log('Found ');
    fs.readFile('foo.txt', "utf-8" ,  function (err, data) {
  if (err) throw err;
  console.log(data);
});

} else {
    console.log("Did not find file, i must first register you to the server.");
    function randomValueHex (len) {
    return crypto.randomBytes(Math.ceil(len/2))
        .toString('hex') 
        .slice(0,len);   
}
var ID = randomValueHex(7)
console.log("Your New Identification Number Is: " + ID);

sendservlet(
    'http://192.168.1.225:3000',
    { form: { key: ID } },
    function (error, response, body) {
        if (!error && response.statusCode == 200) {
            console.log(body)
            console.log(ID)
        }
    }
);
}

Server.JS

var express = require('express');
var bodyParser = require('body-parser')
var app = express();
app.use(bodyParser.urlencoded({ extended: false }));
var crypto = require('crypto');

app.post('/', function (req, res) {
  res.send('POST request to the homepage');
console.log(req.body.form.key);
});

var server = app.listen(3000, function () {
  var host = server.address().address;
  var port = server.address().port;

  console.log('Example app listening at http://%s:%s', host, port);
});

The server cannot seem to be able to read it, i believe that i cannot call the variable like that.

To help narrow this issue down, I am strictly asking why the ID variable cannot be transmitted in

sendservlet(
        'http://192.168.1.225:3000',
        { form: { key: ID } },

thank you very much for any advice available!

Install Wireshark and look at the packets that are sent between client and server. That will be very illuminating, because your core problem is this part: "it generates what i beleive to be a json string" — Tomalak
– Tomalak, Commented Sep 12, 2015 at 3:31

Trott · Accepted Answer · 2015-09-12 05:31:27Z

2

Instead of console.log(req.body.form.key);, you just want console.log(req.body.key);

The form key is just what request uses for (basically) "This is my form data, so this is the stuff to POST to the URL." Whatever was in form on the request side just gets put into req.body on the express side. So you want req.body.key.

edited Sep 12, 2015 at 5:31

answered Sep 12, 2015 at 4:31

Trott

70.6k27 gold badges183 silver badges218 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Using Variable In JSON node.js

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related