Aerys\WatcherProcess::commandParser PHP Method

    private function commandParser($client) : \Generator
    {
        $readWatcherId = yield;
        $buffer = "";
        $length = null;
        do {
            yield;
            $data = @fread($client, 8192);
            if ($data == "" && (!is_resource($client) || @feof($client))) {
                \Amp\cancel($readWatcherId);
                return;
            }
            $buffer .= $data;
            do {
                if (!isset($length)) {
                    if (!isset($buffer[3])) {
                        break;
                    }
                    $length = unpack("Nlength", substr($buffer, 0, 4))["length"];
                    $buffer = substr($buffer, 4);
                }
                if (!isset($buffer[$length - 1])) {
                    break;
                }
                $message = @\json_decode(substr($buffer, 0, $length), true);
                $buffer = (string) substr($buffer, $length);
                $length = null;
                if (!isset($message["action"])) {
                    continue;
                }
                switch ($message["action"]) {
                    case "restart":
                        $this->restart();
                        break;
                    case "stop":
                        \Amp\resolve($this->stop())->when('Amp\\stop');
                        break;
                }
            } while (1);
        } while (1);
    }