如何使用laravel-websockets在公共频道中注册网址？

Question

How to make an url to any user listen to a websocket channel, like wss://stream.exemplo.com:9443/ws/channel@event ?

I'm using the beyondcode/laravel-websockets package and I can consume the channels normally following the docs, but only with a javascript library like echo. My doubts are not about the protocol or how to listen it with Echo, it's just about how to make the part of /channel@event public available to anyone start to listen to it in a website like https://websocket.org/echo.html without any type of authentication.

I can see in they code and in the generated logs that they always require an appId (cause the package is multi-tenancy).

The FetchChannelController find the channel by appId and channelName

class FetchChannelController extends Controller
{
    public function __invoke(Request $request)
    {
        $channel = $this->channelManager->find($request->appId, $request->channelName);

        if (is_null($channel)) {
            throw new HttpException(404, "Unknown channel `{$request->channelName}`.");
        }

        return $channel->toArray();
    }
}

public function find(string $appId, string $channelName): ?Channel
{
    return $this->channels[$appId][$channelName] ?? null;
}

public function getChannels(string $appId): array
{
    return $this->channels[$appId] ?? [];
}

But I expect a way that any user without anything more than channel@event can subscribe to the channel in something like https://websocket.org/echo.html

[EDIT]

I expect a way to make an endpoint that the website https://websocket.org/echo.html can listen to it. I have hundreds of events been broadcasted to a channel "news" for example. So how (using an endpoint, not the channel name in a javascript library) the https://websocket.org/echo.html will start to listen to this channel? Without knowledge of any appId of laravel-websockets, just with the channel name.

Answer 1

One thing is a channel id and another one a user id . The channel and app ids will be used for Laravel-Websockets to identify to wich app and channel the server will emit/listen events. The user id is helpful to check if the user is identified to access a protected (private) channel.

If you want to listen to every event, create a general channel and then, in your website subscribe it to this public general channel to listen to your desired events fired in this general channel.

---

Update

Given your actual requirement

As I said in my comment, you could manage the url string to inject the to your Laravel Echo (or your WS front-end library) in order to make it listen to your events. Given an endpoint like this:

wss://stream.exemplo.com:9443/ws/channel@event

You could:

$string = 'wss://stream.exemplo.com:9443/ws/channel@event';
$segments = explode('/', $string);
/** ['wss:', '', 'stream.exemplo.com:9443', 'ws', 'channel@event'] */

$url = explode(':', $segments[2]);
/** ['stream.exemplo.com', '9443'] */

$event_data = explode('@', $segments[4]);
/** ['channel', 'event'] */

So you have everything to connect to your front-end library ( appId aside, as you said you will handle this on your end):

$wsHost = $url[0];  // 'stream.exemplo.com'
$wsPort = $url[1];  // '9443'
$channel = $event_data[0]; // 'channel'
$event = $event_data[1]; // 'event'

PS: Here I'm using the explode() php's helper.