onClose

Descrição:

callback Worker::$onClose

Callback function triggered when a client connection disconnects from Workerman. Regardless of how the connection is disconnected, the onClose function will be triggered. Each connection will only trigger onClose once.

Note: If the opposite end disconnects due to extreme situations such as network disconnection or power outage, Workerman will not be able to timely send a TCP fin packet to learn that the connection has been disconnected, and thus will not be able to promptly trigger onClose. This situation needs to be resolved through application-layer heartbeats. An example of connection heartbeats in Workerman can be found here. If using the GatewayWorker framework, simply use the GatewayWorker framework's heartbeat mechanism, as seen here.

Because UDP is connectionless, when using UDP, the onConnect callback will not be triggered, nor will the onClose callback.

Parâmetros da função de retorno

$connection

Objeto de conexão, ou seja, a instância TcpConnection, utilizada para operações na conexão do cliente, como enviar dados, fechar conexão, entre outros.

Exemplo

use Workerman\Worker;
use Workerman\Connection\TcpConnection;
require_once __DIR__ . '/vendor/autoload.php';

$worker = new Worker('websocket://0.0.0.0:8484');
$worker->onClose = function(TcpConnection $connection)
{
    echo "conexão fechada\n";
};
// Executar o worker
Worker::runAll();

Nota: Além de usar uma função anônima como retorno, também é possível consultar aqui outras formas de escrita para retornos de chamada.