Echo

Laravel Echo for Flutter

Basically, this package is port of official Laravel Echo javascript library. It helps subscribe to channels and listen for events broadcasted from your Laravel app.

API is mostly same as official Echo package, so everything in Official documentation should work.

Available connectors:

• Pusher
• socket.io

Getting started

Pusher

To use with Pusher, you need to install pusher_client for you Flutter app.

In your pubspec.yaml file:

dependencies:
  ...
  pusher_client: ^2.0.0
  laravel_echo: ^1.0.0

import laravel_echo and pusher_client

import 'package:laravel_echo/laravel_echo.dart';
import 'package:pusher_client/pusher_client.dart';

const String PUSHER_KEY = 'YOUR_PUSHER_KEY_HERE';
const String PUSHER_CLUSTER = 'YOUR_PUSHER_CLUSTER_HERE';
const String BEARER_TOKEN = 'YOUR_BEARER_TOKEN_HERE';
const String AUTH_URL = 'http://echo.test/api/broadcasting/auth';

PusherOptions options = PusherOptions(
  cluster: PUSHER_CLUSTER,
  auth: PusherAuth(
    AUTH_URL,
    headers: {
      'Authorization': 'Bearer $BEARER_TOKEN',
    },
  ),
);

// Create pusher client
PusherClient pusherClient = PusherClient(
  PUSHER_KEY,
  options,
  autoConnect: false,
  enableLogging: true,
);

// Create echo instance
Echo echo = new Echo(
  broadcaster: EchoBroadcasterType.Pusher,
  client: pusherClient,
);

// Listening public channel
echo.channel('public-channel').listen('PublicEvent', (e) {
  print(e);
});

// Accessing pusher instance
echo.connector.pusher.onConnectionStateChange((state) {
  print(state!.currentState.toString());
});

socket.io

To use with socket.io, you need to install socket_io_client for your Flutter app.

In your pubspec.yaml file:

dependencies:
  ...
  socket_io_client: ^1.0.1
  laravel_echo: ^1.0.0

import socket_io_client

import 'package:laravel_echo/laravel_echo.dart';
import 'package:socket_io_client/socket_io_client.dart' as IO;

usage

const String BEARER_TOKEN = 'YOUR_BEARER_TOKEN_HERE';

// Create socket.io client
IO.Socket socket = IO.io(
  'http://localhost:6001',
  IO.OptionBuilder()
      .disableAutoConnect()
      .setTransports(['websocket']).build(),
);

// Create echo instance
Echo echo = new Echo(
  broadcaster: EchoBroadcasterType.SocketIO,
  client: socket,
  options: {
    'auth': {
      'headers': {
        'Authorization': 'Bearer $BEARER_TOKEN',
      }
    },
  },
);

// Listening public channel
echo.channel('public-channel').listen('PublicEvent', (e) {
  print(e);
});

// Listening private channel
// Needs auth. See details how to authorize channel below in guides
echo.private('private-channel').listen('PrivateEvent', (e) {
  print(e);
});

// Listening presence channel
// Needs auth. See details how to authorize channel below in guides
echo.join('presence-channel')
  .here((users) {
    print(users);
  }).joining((user) {
    print(user);
  }).leaving((user) {
    print(user);
  }).listen('PresenceEvent', (e) {
    print(e);
  });

// Accessing socket instance
echo.connector.socket.onConnect((_) => print('connected'));
echo.connector.socket.onDisconnect((_) => print('disconnected'));

Guide

Options

Option	Description	Default
auth
authEndpoint		/api/broadcasting/auth
broadcaster		EchoBroadcasterType.Pusher
host	Socket host	http://localhost:6001
namespace	Event namespace	App.Events
...	Any other options, passed as socket params

Sample backend

Backend used for example app could be found at echo-server

Credits

This package would not be existed without hard work of these awesome devs.

• @chinloyal - maintainer of pusher_client
• @rikolu - maintainer of socket_io_client
• @heywhy - for initial Pusher intagration