How to send a POST request from node.js Express?

Could someone show me the simplest way to send a post request from node.js Express, including how to pass and retrieve some data? I am expecting something similar to cURL in PHP.

var request = require('request');
function updateClient(postData) {
    var clientServerOptions = {
        uri: 'http://'+clientHost+''+clientContext,
        body: JSON.stringify(postData),
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        }
    }
    request(clientServerOptions, function (error, response) {
        console.log(error,response.body);
        return;
    });
}

For this to work, your server must be something like:

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

var port = 9000;

app.post('/sample/put/data', function(req, res) {
    console.log('receiving data ...');
    console.log('body is ',req.body);
    res.send(req.body);
});

// start the server
app.listen(port);
console.log('Server started! At http://localhost:' + port);