public function onData(int $clientId, Websocket\Message $msg)
{
// yielding $msg buffers the complete payload into a single string. For very large payloads, you may want to
// stream those instead of buffering them.
$body = (yield $msg);
// We use the IP as name for this simple chat app.
$ip = $this->connections[$clientId];
// If someone mentions an IP, we send the message only to clients with that IP and the sender itself.
if (preg_match("~@(\\d+\\.\\d+\\.\\d+\\.\\d+)\\b~", $body, $match)) {
list($all, $receiver) = $match;
$payload = $ip . " (private): " . substr($body, strlen($all));
$clients = array_keys($this->ips[$receiver] ?? []);
if (!empty($clients)) {
$this->endpoint->send($clients, $payload);
}
$this->endpoint->send($clientId, $payload);
} else {
$payload = $ip . ": " . $body;
$this->endpoint->send(null, $payload);
}
}
protected function initUserSubscription()
{
$subscription = $this->eventSub->subscribe("chat:user");
$subscription->watch(function ($payload) {
if (empty($this->user2sessions[$payload->user_id])) {
return;
}
$sessions = $this->user2sessions[$payload->user_id];
$clients = [];
foreach (array_keys($sessions) as $sessionId) {
$clients = array_merge($this->session2clients[$sessionId]);
}
$this->endpoint->broadcast(json_encode(["status" => "event", "type" => $payload->type, "data" => $payload->payload]), $clients);
});
$subscription->when(function ($error) {
if ($error) {
(new Pause(1000))->when(function () {
$this->initUserSubscription();
});
}
});
}
