var http = require('http');

var options = {
  method: 'POST',
  hostname: 'mockbin.com',
  port: null,
  path: '/har',
  headers: {
    'content-type': 'application/json'
  }
};

var req = http.request(options, function(res) {
  var chunks = [];

  res.on('data', function(chunk) {
    chunks.push(chunk);
  });

  res.on('end', function() {
    var body = Buffer.concat(chunks);
    console.log(body.toString());
  });
});

req.write(
  JSON.stringify({
    number: 1,
    string: 'f"oo',
    arr: [1, 2, 3],
    nested: { a: 'b' },
    arr_mix: [1, 'a', { arr_mix_nested: {} }],
    boolean: false
  })
);
req.end();