使用旧证书调用 HTTPS 页面时的 cURL 超时

问题描述

我正在尝试使用 PHP 和 cURL (libcurl) 从我所在机构的数据服务获取 XML.开发正在我的本地机器上完成.它是在 PHP 中作为 Drupal 和 Transformations 模块的一部分进行评估的代码.

I am trying to get the XML from a Data Service at my institution using PHP and cURL (libcurl). The development is being done on my local machine. It is code that is eval'd in PHP as part of Drupal and the Transformations module.

它具有 SSL 支持，如运行所示:

It has SSL support as shown from running:

$curl-config --features (来自 libcurl 文档)

SSL
IPv6
库
NTLM

SSL
IPv6
libz
NTLM

正在执行的 PHP 代码:

The PHP code being executed:

/**
 * Get a web file (HTML, XHTML, XML, image, etc.) from a URL.  Return an
 * array containing the HTTP server response header fields and content.
 * FROM: http://bit.ly/lNIlOu
 */
function get_web_page( $url )
{
  $agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.112 Safari/534.30';
  //$agent = 'spider';

  $options = array(
    CURLOPT_RETURNTRANSFER => true,     // return web page if successful
    CURLOPT_HEADER         => false,    // don't return headers
    CURLOPT_FOLLOWLOCATION => true,     // follow redirects
    CURLOPT_ENCODING       => "",       // handle all encodings
    CURLOPT_USERAGENT      => $agent, // who am i
    CURLOPT_AUTOREFERER    => true,     // set referer on redirect
    CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
    CURLOPT_TIMEOUT        => 120,      // timeout on response
    CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
    CURLOPT_SSL_VERIFYPEER => false,    // Disabled SSL Cert checks
    CURLOPT_SSL_VERIFYHOST => false,    // Disable host checks ?
  );

  $ch      = curl_init( $url );
  curl_setopt_array( $ch, $options );
  $content = curl_exec( $ch );
  $err     = curl_errno( $ch );
  $errmsg  = curl_error( $ch );
  $header  = curl_getinfo( $ch );
  curl_close( $ch );

  $header['errno']   = $err;
  $header['errmsg']  = $errmsg;
  $header['content'] = $content;
  return $header;
}

$url = 'https://ws.admin.washington.edu/student/v4/public/section.xml?year=2011&quarter=autumn&curriculum_abbreviation=BIOL&course_number=&id=&search_by=Instructor';
$result = get_web_page($url);

echo '<pre>CURL result:<br/>';
var_dump($result);
echo '</pre>';

倾销 $ch 的精简版:

A slimmed down version of dumping $ch:

array(24) {
  ["url"]=>
  string(155) "https://ws.admin.washington.edu/student/v4/public/section.xml?year=2011&quarter=autumn&curriculum_abbreviation=BIOL&course_number=&id=&search_by=Instructor"
  ["content_type"]=>
  NULL
  ["http_code"]=>
  int(0)
  ["header_size"]=>
  int(0)
  ["request_size"]=>
  int(237)
  ...
  ["ssl_verify_result"]=>
  int(20)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(120.41427)
  ...
  ["connect_time"]=>
  float(0.11626)
  ...
  ["certinfo"]=>
  array(0) {
  }
  ["errno"]=>
  int(28)
  ["errmsg"]=>
  string(67) "Operation timed out after 120000 milliseconds with 0 bytes received"
  ["content"]=>
  bool(false)
}

当我自己访问该网站时，它只会加载.我什至将代理签名设置为与我自己的完全相同.

When I visit the site myself it simply loads. I even set the agent signature to be the exact same as my own.

任何帮助将不胜感激.

推荐答案

对于我来说添加 curl_setopt($ch, CURLOPT_SSLVERSION, 3); 神奇地解决了这个问题！

For me adding curl_setopt($ch, CURLOPT_SSLVERSION, 3); magically solved the issue!

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