swoole jsonが不完全な場合の対処方法

class Server
{
    private $serv;
    public function __construct() {
        $this->serv = new swoole_server("127.0.0.1", 9501);
        $this->serv->set(array(
            'worker_num'     => 4,   //一般设置为服务器CPU数的1-4倍
            'daemonize'      => 1,  //以守护进程执行
            'max_request'     => 2000,
            'dispatch_mode'    => 2,//进程数据包分配模式 1平均分配，2按FD取摸固定分配，3抢占式分配
            'task_worker_num'   => 8,  //task进程的数量
            "task_ipc_mode "   => 3 ,  //使用消息队列通信，并设置为争抢模式
            "log_file"      => "./log/taskqueueu.log" ,//日志
        ));
        $this->serv->on('Receive', array($this,'onReceive'));//接收到数据时回调此函数
        $this->serv->start();
    }
    public function onReceive(swoole_server $serv, $fd, $from_id, $data ) {
                $serv->send($fd, $data);
                        usleep(500); //不加延时的话，经常两条数据被合并成一条返回了。
                        $serv->close($fd);
    }   
    public function onClose(swoole_server $serv, $fd) {
                $serv->send($fd, 'CLOSED');
    }   
}

$client = new swoole_client(SWOOLE_SOCK_TCP);
if (!$client->connect('127.0.0.1', 9501, -1))
{
    exit("connect failed. Error: {$client->errCode}\n");
}
$data=[
        'type'=>1, 
        'data'=>array(
                'PlatformCode'=>'...........很长的数据.',
            )
   ];
$sender=$client->send(json_encode($data)."\r\n\r\n");
while($result = $client->recv()){
    if($result=='CLOSED'){
            echo "任务结束。byebye~\r\n";
            break;
    }else{
      echo $result;
  }
}
$client->close();

    $serv->set(
        array('open_eof_split' => TRUE, 'package_eof' => "\r\n\r\n")
    );

$server->set(array(
        'open_length_check' => true,
        'package_max_length' => 81920,
        'package_length_type' => 'n', //see php pack()
        'package_length_offset' => 0,
        'package_body_offset' => 2,
));