node-saveData-http.js

var express = require('express')
  , cors = require('cors')
  , app = express();
var fs = require('fs');

app.use(cors());

app.post('/post', function(req, res, next){
        var body = [];
        req.on('data', function(chunk) {
                body.push(chunk);
                  }).on('end', function() {
                body = Buffer.concat(body).toString();
                console.log(body);
                var parsedData = JSON.parse(body);
                var filename = parsedData['q'].replace(' ','_').replace(/\./g,'').replace(/\\/g,'');
                var filepath = "/tmp/"+filename+'.txt';
                fs.writeFile(filepath, body, function(err) {
                        if(err) {   
                                    return console.log(err);
                                        }

                            console.log("The file "+filepath+" was saved!");
                }); 
          

          res.json({msg: 'This is CORS-enabled for all origins!'});
        });
});

app.listen(8000, function(){
  console.log('CORS-enabled web server listening on port 80');
});