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swoole升级到 4.5.3 后，之前的协程websocket客户端代码报错。

### 问题描述
swoole升级到 4.5.3 后，之前的协程websocket客户端代码报错。

### Swoole版本，PHP版本，以及操作系统版本信息
swoole

Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.5.3
Built => Aug 30 2020 08:51:02
coroutine => enabled
trace_log => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
sockets => enabled
openssl => OpenSSL 1.0.2k-fips  26 Jan 2017
http2 => enabled
pcre => enabled
zlib => 1.2.7
mutex_timedlock => enabled
pthread_barrier => enabled
futex => enabled
mysqlnd => enabled
async_redis => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => On => On
swoole.unixsock_buffer_size => 8388608 => 8388608

php 7.2.31
CentOS Linux release 7.7.1908 (Core)

### 相关代码
```php
go(function () {
	$cli = new Co\http\Client("www.xxx.com", 443, true);
	$ret = $cli->upgrade("/ws");
	if ($ret && $cli->statusCode == 101) {
		var_dump(date('Y-m-d H:i:s') . '=连接=');
		$book = [xxx];
        $cli->push(json_encode($book));
		while (true) {
			if ($recv = $cli->recv()) {
				$data = $recv->data;
				//业务代码
			} else {
				var_dump($recv);
				var_dump($cli->errCode);
				var_dump(socket_strerror($cli->errCode));
				break;
			}
			echo '=异常断开=';
		}
	} else {
		echo '=超时=';
	}
	\Swoole\Timer::clearAll();
	$cli->close();
});
```
### 你期待的结果是什么？实际看到的错误信息又是什么？
之前是没有问题，现在启动直接输出：
string(27) "2020-09-05 10:42:28=连接="
bool(false)
int(11)
string(32) "Resource temporarily unavailable"
=异常断开=

发布于3年前 · 3 次浏览 · 来自提问