Cannot listen when joining presence channel

[kevinongko]

• Echo Version: 1.6.1
• Laravel Version: 7.3.0
• PHP Version: 7.3.15
• NPM Version: 6.13.4
• Node Version: 10.19.0

Description:

Cannot listen when joining presence channel because of presence- prefix

Steps To Reproduce:

1. Set the broadcast channel routes in routes/channels.php

  Broadcast::channel('room.{roomId}', function ($user, $roomId) {
     // some code here
  });

2. Echo.join to 'room'

    Echo.join(`room.${this.roomId}`)
      .here(users => { this.users = users })
      .joining(user => this.users.push(user))
      .leaving(user => _.remove(this.users, user))
      .listen('NewMessage', e => {
          console.log(e)
      })

3. in NewMessage Event

    public function broadcastOn()
    {
        return new PresenceChannel('room.'.$this->roomId);
    }

4. Remove redis prefixes in .env

REDIS_PREFIX=

5. Run laravel-echo-server and check the page

[7:43:06 PM] - l83ZKBCDZdXvdxKaAAAH joined channel: presence-room.1
Channel: presence-room.1
Event: App\Events\NewMessage

The NewMessage Event prefix the code with presence- but Echo cannot listen to presence-room.1 because it join to room.1

Is this a bug or I'm missing something?
Thanks in advance :D

[driesvints]

Have you tried upgrading to the latest redis? laravel/framework#32069

[ItsZiroy]

According to the Laravel docs, a user must be authenticated to join a presence channel. In the above example you did not include any authentication call back like so:

Broadcast::channel('room.{roomId}', function ($user, $roomId) {
    if ($user->canJoinRoom($roomId)) {
        return ['id' => $user->id, 'name' => $user->name];
    }
}); 

Returning the user object will first make the channel a presence channel. Not just creating a

new PresenceChannel();

Object. Since the join will then receive a User as callback, Echo automatically knows it's a presence channel.

I am also pretty sure that only
REDIS_PREFIX=""
will set the prefix to none. This will, however, have no effect on your project if your Redis version is below 5.0
Reference: https://laravel.com/docs/7.x/broadcasting#authorizing-presence-channels

[kevinongko]

@ItsZiroy yes, I do return user object in that callback, I'm just leaving it out for the sake of example above

@driesvints upgrading my redis from 5.0.7 to 5.0.8 somehow fixed the problem, thanks

cheers

[ankit-shah-logistic]

I have the same issue, Presence channel is not working. Is any one help me to solve this out ?