How to listen event onOpen in server?

[Tien Tran]

How to listen event onOpen in server? Because some time i need to save resourceId or somethings. Please help me ?

public function onOpen(ConnectionInterface $conn){
}

Where we can listen this event?

[Julien Maulny]

I'm implementing this method in Eole\Sandstone\Websocket\Application to handle authentication.

But this is true, I never met this use case, so actually it's hard to do it as is, because the ComponentInterface, which implements the onOpen method, is encapsuled inside Eole\Sandstone\Websocket\Application.

I think we should be able to listen to an onOpen event that I'll dispatch.

So if you could do something like this:

$dispatcher->addListener(ServerEvent::ON_OPEN, function (ConnectionInterface $conn) {
    // resourceId or somethings
});

Could it be suffisant ?

[Julien Maulny]

I could test your use case and it works:

[info] Initialization... []
[info] Bind websocket server {"bind":"0.0.0.0","port":8482}
[info] Bind push server {"bind":"0.0.0.0","host":"localhost","port":5555}
ON OPEN <= My event listener is called
[info] Connection event {"event":"open"}
[info] Authentication... []
[info] Anonymous connection []

You can test it by:

• In composer, require this dev version:

    "require": {
        "eole/sandstone": "dev-feature/connection-events@dev",
    }

• composer update
• Listen to the ON_OPEN event:

use Eole\Sandstone\Websocket\Event\ConnectionEvent;

$this['dispatcher']->addListener(ConnectionEvent::ON_OPEN, function (ConnectionEvent $event) {
    $conn = $event->getConn();
});

Or, if you get the "dispatcher service is frozen" error, do:

$this->on(ConnectionEvent::ON_OPEN, function (ConnectionEvent $event) {
    $conn = $event->getConn();
});

If all is ok for you, I'll integrate all connection events in Sandstone.

[Tien Tran]

Hi @alcalyn
Please merge to master! I think if add it then it will be great event!!!

[Julien Maulny]

Okey, just wanted to be sure that, this way, it covers your use case.

I'll disptach all other events (onClose, onSubscribe, onError, ...) and release it.

Until next release, onOpen event is testable in dev-feature/connection-events@dev version.

[Tien Tran]

Thank @alcalyn, I will test on this branch too.

[Julien Maulny]

@tranphuoctien I opened a PR where we can listen to onOpen event: #6

I let you test and let me know if it fits your need.

[Tien Tran]

I have been tested on this branch. It's working @alcalyn with both:

 $this['dispatcher']->addListener(ConnectionEvent::ON_OPEN, function (ConnectionEvent $event) {
     $conn = $event->getConn();
 });
 
 $this->on(ConnectionEvent::ON_OPEN, function (ConnectionEvent $event) {
     $conn = $event->getConn();
 });

I got it!
So can you upgrade ratchet to 0.4 too?

[Julien Maulny]

Good, I'll release it soon.

I already upgraded to Ratchet 0.4 (in a branch) in order to try a wss: connection, but I'll release the upgrade only.

[Julien Maulny]

(Oh, I just remembered that upgrading to Ratchet 0.4 will probably bump Sandstone to v2.0.0)

[Tien Tran]

Thank you @alcalyn !!!

[Julien Maulny]

Reelased in 1.3.0 https://github.com/eole-io/sandstone/releases/tag/1.3.0