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http-client socks5 proxy 输入空凭据导致协商失败时，在php中无法获得任何有效信息

1. 在提交问答前请尽可能回答以下问题：

2. 请详细描述问题的产生过程，贴出相关的代码，最好能提供一份可稳定重现的简单脚本代码。
```php
$http = new Client('httpbin.org', 443, true);
$http->set([
    'socks5_host' => '192.168.10.1',
    'socks5_port' => 10900,
    'socks5_username' => '',
    'socks5_password' => '',
]);
var_dump($http->get('/ip'));
var_dump($http->errCode);
var_dump($http->errMsg);
var_dump(substr($http->body, 0, 64));
```

3. 期望的结果是什么？
```
用户代码能获得有效的错误信息
```

4. 实际运行的结果是什么？
```
[2020-04-12 14:23:21 @14169.0]	NOTICE	socks5_handshake (ERRNO 7002): SOCKS authentication method not supported
bool(false)
int(0)
string(0) ""
string(0) ""
```

5. 你的版本? 贴出 `php --ri swoole` 所打印的内容

```
swoole

Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.4.17
Built => Apr  1 2020 15:00:18
coroutine => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
sockets => enabled
openssl => OpenSSL 1.1.1d  10 Sep 2019
http2 => enabled
pcre => enabled
zlib => 1.2.11
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
```

6. 你使用的机器系统环境是什么（包括内核、PHP、gcc编译器版本信息）？可以使用`uname -a`, `php -v`, `gcc -v` 命令打印
```
PHP 7.3.16-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Mar 20 2020 13:51:46) ( NTS )
```

发布于4年前 · 2 次浏览 · 来自提问