src/Leevel/Protocol/Server.php
public function onReceive(SwooleServer $server, int $fd, int $reactorId, string $data): void
    {
    }
public function onReceive(SwooleServer $server, int $fd, int $reactorId, string $data): void
    {
    }
监听数据发送事件.

@param \Swoole\Server $server
@param int            $fd
@param int            $reactorId
@param string         $data

@see https://wiki.swoole.com/wiki/page/50.html