event-sender

Provide an EventSender prototype to send Server Sent Events, meant to be consumed by the EventSource interface.

Installation

npm install --save event-sender

Usage

Initialize your EventSender object with an HTTP response object (the ExpressJS res parameter, for instance):

var EventSender = require('event-sender');
var event = new EventSender(response);

Then you can use its send() method to send events to the client:

// Send plain text to the client:
event.send({ name: 'greeting', data: 'Hello, World!\nHow the hell are yer?!' });

// Send JSON data to the client:
event.send({
 name: 'direct-message',
 data: { author: 'cGuille', content: 'Hope you like it!' }
});

Non string data are JSON stringified.

It is also possible to provide a callback which will be called when the data have been sent to the client :

event.send(eventObj, function () {
 console.log('The event has been flushed to the network.');
});

Licence

This small library is distributed under the MIT licence.