如何用Amphp捕获php websocket中断的TCP连接异常？

Question

下面是我正在运行的当前WebSocket循环，而该连接仍然处于活动状态。但是在连续连接了11个小时之后，我收到了一个例外

"exception":"[object] (Amp\\Websocket\\ClosedException(code: 1006): The connection was closed: Client closed the underlying TCP connection at ...

如何检查关闭的连接或异常本身？，这样我就可以正确地结束脚本逻辑而不会突然失败。

     \Amp\Loop::run(function () use ($fn, $st)
        {
            $connection = yield \Amp\Websocket\connect('wss://URL');

            yield $connection->send('{"action":"auth","params":"KEYID"}');
            yield $connection->send('{"action":"subscribe","params":"'.$st.'"}');

            $i = 0;

            while ($message = yield $connection->receive()) 
            {
                $i++;
                $payload = yield $message->buffer();

                $r = $fn($payload, $i);

                if ($r == false) {
                    $connection->close();
                    break;
                }
            }
        }
    );

我使用的是Amphp Websocket：https://github.com/amphp/websocket-client

谢谢!

Answer 1

通过查找ClosedException并在抛出之后运行其他任务，我找到了解决这个问题的方法。

\Amp\Loop::run(function () use ($fn, $st)
    {
        try 
        {
            $connection = yield \Amp\Websocket\connect('wss://URL');

            yield $connection->send('{"action":"auth","params":"KEYID"}');
            yield $connection->send('{"action":"subscribe","params":"'.$st.'"}');

            $i = 0;

            while ($message = yield $connection->receive()) 
            {
                $i++;
                $payload = yield $message->buffer();

                $r = $fn($payload, $i);

                if ($r == false) {
                    $connection->close();
                    break;
                }
            }
        }
        catch (\Amp\Websocket\ClosedException $e) 
        {
            // do something here
        }
    }
);