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snapper-consumer

v1.3.6

Published

snapper consumer client for node.js and browser.

Downloads

28

Readme

snapper-consumer

snapper consumer client for node.js and browser.

Snapper-consumer is tested in snapper-core

Snapper-core Teambition push messaging service

Demo

# module: socket.coffee
define((require, exports, module) ->
  Backbone   = require('backbone')
  Consumer   = require('consumer')
  http       = require('lib/http-thunks')

  class SocketClient extends Consumer
    onmessage: (event) ->
      if event.type isnt 'request'
        return @onerror(new Error('It is not a request: ' + JSON.stringify(event.data)))
      # parse multi sub-messages
      while event.data.params.length
        try
          data = JSON.parse(event.data.params.shift())
          if data and typeof data.e is 'string'
            @trigger(data.e, data.d)
          else
            @onerror(new Error('Unprocessable entity: ' + JSON.stringify(data)))
        catch err
          @onerror(err)

    _join: (room, consumerId) ->
      # join a room by API server
      http.post("#{room}/subscribe", {consumerId: consumerId})()

  _.extend(SocketClient.prototype, Backbone.Events)
  return new SocketClient()
)

# ---------------------------
# connect to server
socketClient.connect(teambition.pushHost, {
  path: '/websocket'
  token: teambition.user.get('snapperToken')
})

# listen for messages
socketClient.on('xxx', (data) -> )

API

var Consumer = require('snapper-consumer')

new Consumer([url][, options])

var consumer = new Consumer()
  • url: String, Snapper server host.
  • options: Object, engine.io-client options, but added options.token.

consumer.prototype.onopen()

consumer.prototype.onclose()

consumer.prototype.onerror(error)

  • error: Error Object.

Default error listener, overwrite it in production.

consumer.prototype.onmessage(event)

  • event.id: String|Number|null|undefined, JSON-RPC id
  • event.data: Object, JSON-RPC object.
  • event.type: String, JSON-RPC type, 'invalid', 'notification', 'success', 'error', 'request'.

Default messages listener, overwrite it in production.

consumer.prototype.getToken()

Default getToken, overwrite it in production.

Consumer.prototype.getToken = function () {
  return this.options.token
}

consumer.prototype.request(method[, params][, callback])

  • method: String, JSON-RPC request method.
  • params: Mixed, JSON-RPC request params.
  • callback: function, response callback.

Send a JSON-RPC request to server.

consumer.prototype.join(room), consumer.prototype._join(room, consumerId)

  • room: String, room name.

_join method should be implemented for this method.

consumer.prototype._respond(event)

It is used to respond server's request.

consumer.prototype.connect([url][, options])

  • url: String, Snapper server host.
  • options: Object, engine.io-client options, but added options.token.

Connect to server. The arguments is the same as constructor, should be provided in constructor or here.

consumer.prototype.close()

Close the client.