event-source-emitter

event-source-emitter

Server-side events with EventSource.

Example

var http        = require('http')
  , eventSource = require('event-source-emitter')
http.createServer(function(req, res) {
  var es    = eventSource(req, res, {keepAlive: true})
    , times = 0
  var interval = setInterval(function() {
    es.emit("update", {time: Date.now()})
    if (times++ > 10) {
      es.end()
      clearInterval(interval)
    }
  }, 1000)
}).listen(8765)

$ curl -v 127.0.0.1:8765

To connect to the EventSource server, use the browser's EventSource interface.

API

EventSource(req, res, {keepAlive, onClose})

• keepAlive - Boolean, default: false. If true, send a comment every 15 seconds to guard against timeouts.
• onClose - Function, called when the connection is terminated.

EventSource.emit(event, data)

Send an event down the event stream.

EventSource.end()

Close the connection.

EventSource.comment(text)

Send a message down the event stream. It will be ignored by the receiver.