this file is node.js module, place the file to node_module/irkit/index.js and change "esp_irkit.local" to "irkit.local" if needed.

index.js

var request = require('request');
var fs = require('fs');

function postMessages(body, callback)
{
    var options = {
        uri: 'http://esp_irkit.local/messages',
        method: 'POST',
        headers: { 'Content-Type': 'application/json',
                   'Content-Length': body.length },
        body: body
    };

    request(options, function(err, res, res_body) {
        if (err) {
            if (callback != null) {
                callback('ERROR');
            }
        }
        res_json = JSON.parse(res_body);
        if (callback != null) {
            callback(res_json.status);
        }
    });
}

function sendFile(json_file, callback)
{
    var body = fs.readFileSync(json_file, 'utf-8');

    postMessages(body, callback);
}

function send(json, callback)
{
    var body = JSON.stringify(json);

    postMessages(body, callback);
}

module.exports = {
    send: send,
    sendFile: sendFile
};