PHP Proxy::is_enabled方法代码示例

 /**
  * Send a HTTP request to a URI using streams with fopen().
  *
  * @access public
  * @since 2.7.0
  *
  * @param string  $url
  * @param str|array $args Optional. Override the defaults.
  * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.
  */
 function request($url, $args = array())
 {
     $defaults = array('method' => 'GET', 'timeout' => 5, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true, 'headers' => array(), 'body' => null, 'cookies' => array());
     $r = array_merge($defaults, $args);
     if (isset($r['headers']['User-Agent'])) {
         $r['user-agent'] = $r['headers']['User-Agent'];
         unset($r['headers']['User-Agent']);
     } else {
         if (isset($r['headers']['user-agent'])) {
             $r['user-agent'] = $r['headers']['user-agent'];
             unset($r['headers']['user-agent']);
         }
     }
     // Construct Cookie: header if any cookies are set
     \Leeflets\Http::buildCookieHeader($r);
     $arrURL = parse_url($url);
     if (false === $arrURL) {
         return new \Leeflets\Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));
     }
     if ('http' != $arrURL['scheme'] && 'https' != $arrURL['scheme']) {
         $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);
     }
     // Convert Header array to string.
     $strHeaders = '';
     if (is_array($r['headers'])) {
         foreach ($r['headers'] as $name => $value) {
             $strHeaders .= "{$name}: {$value}\r\n";
         }
     } else {
         if (is_string($r['headers'])) {
             $strHeaders = $r['headers'];
         }
     }
     $is_local = isset($args['local']) && $args['local'];
     $ssl_verify = isset($args['sslverify']) && $args['sslverify'];
     if ($is_local) {
         $ssl_verify = $this->hook->apply('https_local_ssl_verify', $ssl_verify);
     } elseif (!$is_local) {
         $ssl_verify = $this->hook->apply('https_ssl_verify', $ssl_verify);
     }
     $arrContext = array('http' => array('method' => strtoupper($r['method']), 'user_agent' => $r['user-agent'], 'max_redirects' => $r['redirection'] + 1, 'protocol_version' => (double) $r['httpversion'], 'header' => $strHeaders, 'ignore_errors' => true, 'timeout' => $r['timeout'], 'ssl' => array('verify_peer' => $ssl_verify, 'verify_host' => $ssl_verify)));
     $proxy = new Proxy();
     if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
         $arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port();
         $arrContext['http']['request_fulluri'] = true;
         // We only support Basic authentication so this will only work if that is what your proxy supports.
         if ($proxy->use_authentication()) {
             $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";
         }
     }
     if (!is_null($r['body'])) {
         $arrContext['http']['content'] = $r['body'];
     }
     $context = stream_context_create($arrContext);
     if (!$this->config->debug) {
         $handle = @fopen($url, 'r', false, $context);
     } else {
         $handle = fopen($url, 'r', false, $context);
     }
     if (!$handle) {
         return new \Leeflets\Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
     }
     $timeout = (int) floor($r['timeout']);
     $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
     stream_set_timeout($handle, $timeout, $utimeout);
     if (!$r['blocking']) {
         stream_set_blocking($handle, 0);
         fclose($handle);
         return array('headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array());
     }
     if ($r['stream']) {
         if (!$this->config->debug) {
             $stream_handle = @fopen($r['filename'], 'w+');
         } else {
             $stream_handle = fopen($r['filename'], 'w+');
         }
         if (!$stream_handle) {
             return new \Leeflets\Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $r['filename']));
         }
         stream_copy_to_stream($handle, $stream_handle);
         fclose($stream_handle);
         $strResponse = '';
     } else {
         $strResponse = stream_get_contents($handle);
     }
     $meta = stream_get_meta_data($handle);
     fclose($handle);
     $processedHeaders = array();
     if (isset($meta['wrapper_data']['headers'])) {
         $processedHeaders = \Leeflets\Http::processHeaders($meta['wrapper_data']['headers']);
//.........这里部分代码省略.........

 /**
  * Send a HTTP request to a URI using cURL extension.
  *
  * @access public
  * @since 2.7.0
  *
  * @param string  $url
  * @param str|array $args Optional. Override the defaults.
  * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.
  */
 function request($url, $args = array())
 {
     $defaults = array('method' => 'GET', 'timeout' => 5, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true, 'headers' => array(), 'body' => null, 'cookies' => array());
     $r = array_merge($defaults, $args);
     if (isset($r['headers']['User-Agent'])) {
         $r['user-agent'] = $r['headers']['User-Agent'];
         unset($r['headers']['User-Agent']);
     } else {
         if (isset($r['headers']['user-agent'])) {
             $r['user-agent'] = $r['headers']['user-agent'];
             unset($r['headers']['user-agent']);
         }
     }
     // Construct Cookie: header if any cookies are set.
     \Leeflets\Http::buildCookieHeader($r);
     $handle = curl_init();
     // cURL offers really easy proxy support.
     $proxy = new Proxy();
     if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
         curl_setopt($handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
         curl_setopt($handle, CURLOPT_PROXY, $proxy->host());
         curl_setopt($handle, CURLOPT_PROXYPORT, $proxy->port());
         if ($proxy->use_authentication()) {
             curl_setopt($handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
             curl_setopt($handle, CURLOPT_PROXYUSERPWD, $proxy->authentication());
         }
     }
     $is_local = isset($r['local']) && $r['local'];
     $ssl_verify = isset($r['sslverify']) && $r['sslverify'];
     if ($is_local) {
         $ssl_verify = $this->hook->apply('https_local_ssl_verify', $ssl_verify);
     } elseif (!$is_local) {
         $ssl_verify = $this->hook->apply('https_ssl_verify', $ssl_verify);
     }
     // CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since
     // a value of 0 will allow an unlimited timeout.
     $timeout = (int) ceil($r['timeout']);
     curl_setopt($handle, CURLOPT_CONNECTTIMEOUT, $timeout);
     curl_setopt($handle, CURLOPT_TIMEOUT, $timeout);
     curl_setopt($handle, CURLOPT_URL, $url);
     curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($handle, CURLOPT_SSL_VERIFYHOST, $ssl_verify === true ? 2 : false);
     curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify);
     curl_setopt($handle, CURLOPT_USERAGENT, $r['user-agent']);
     // The option doesn't work with safe mode or when open_basedir is set, and there's a
     // bug #17490 with redirected POST requests, so handle redirections outside Curl.
     curl_setopt($handle, CURLOPT_FOLLOWLOCATION, false);
     switch ($r['method']) {
         case 'HEAD':
             curl_setopt($handle, CURLOPT_NOBODY, true);
             break;
         case 'POST':
             curl_setopt($handle, CURLOPT_POST, true);
             curl_setopt($handle, CURLOPT_POSTFIELDS, $r['body']);
             break;
         case 'PUT':
             curl_setopt($handle, CURLOPT_CUSTOMREQUEST, 'PUT');
             curl_setopt($handle, CURLOPT_POSTFIELDS, $r['body']);
             break;
         default:
             curl_setopt($handle, CURLOPT_CUSTOMREQUEST, $r['method']);
             if (!is_null($r['body'])) {
                 curl_setopt($handle, CURLOPT_POSTFIELDS, $r['body']);
             }
             break;
     }
     if (true === $r['blocking']) {
         curl_setopt($handle, CURLOPT_HEADERFUNCTION, array($this, 'stream_headers'));
     }
     curl_setopt($handle, CURLOPT_HEADER, false);
     // If streaming to a file open a file handle, and setup our curl streaming handler
     if ($r['stream']) {
         if (!$this->config->debug) {
             $stream_handle = @fopen($r['filename'], 'w+');
         } else {
             $stream_handle = fopen($r['filename'], 'w+');
         }
         if (!$stream_handle) {
             return new \Leeflets\Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $r['filename']));
         }
         curl_setopt($handle, CURLOPT_FILE, $stream_handle);
     }
     if (!empty($r['headers'])) {
         // cURL expects full header strings in each element
         $headers = array();
         foreach ($r['headers'] as $name => $value) {
             $headers[] = "{$name}: {$value}";
         }
         curl_setopt($handle, CURLOPT_HTTPHEADER, $headers);
     }
//.........这里部分代码省略.........

 /**
  * Send a HTTP request to a URI using fsockopen().
  *
  * Does not support non-blocking mode.
  *
  * @see \Leeflets\Http::request For default options descriptions.
  *
  * @since 2.7
  * @access public
  * @param string  $url  URI resource.
  * @param str|array $args Optional. Override the defaults.
  * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys.
  */
 function request($url, $args = array())
 {
     $defaults = array('method' => 'GET', 'timeout' => 5, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true, 'headers' => array(), 'body' => null, 'cookies' => array());
     $r = array_merge($defaults, $args);
     if (isset($r['headers']['User-Agent'])) {
         $r['user-agent'] = $r['headers']['User-Agent'];
         unset($r['headers']['User-Agent']);
     } else {
         if (isset($r['headers']['user-agent'])) {
             $r['user-agent'] = $r['headers']['user-agent'];
             unset($r['headers']['user-agent']);
         }
     }
     // Construct Cookie: header if any cookies are set
     \Leeflets\Http::buildCookieHeader($r);
     $iError = null;
     // Store error number
     $strError = null;
     // Store error string
     $arrURL = parse_url($url);
     $fsockopen_host = $arrURL['host'];
     $secure_transport = false;
     if (!isset($arrURL['port'])) {
         if (($arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https') && extension_loaded('openssl')) {
             $fsockopen_host = "ssl://{$fsockopen_host}";
             $arrURL['port'] = 443;
             $secure_transport = true;
         } else {
             $arrURL['port'] = 80;
         }
     }
     //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,
     // which fails when the server is not set up for it. For compatibility, always connect to the IPv4 address.
     if ('localhost' == strtolower($fsockopen_host)) {
         $fsockopen_host = '127.0.0.1';
     }
     // There are issues with the HTTPS and SSL protocols that cause errors that can be safely
     // ignored and should be ignored.
     if (true === $secure_transport) {
         $error_reporting = error_reporting(0);
     }
     $startDelay = time();
     $proxy = new Proxy();
     if (!$this->config->debug) {
         if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
             $handle = @fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
         } else {
             $handle = @fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
         }
     } else {
         if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
             $handle = fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout']);
         } else {
             $handle = fsockopen($fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout']);
         }
     }
     $endDelay = time();
     // If the delay is greater than the timeout then fsockopen shouldn't be used, because it will
     // cause a long delay.
     $elapseDelay = $endDelay - $startDelay > $r['timeout'];
     if (true === $elapseDelay) {
         add_option('disable_fsockopen', $endDelay, null, true);
     }
     if (false === $handle) {
         return new \Leeflets\Error('http_request_failed', $iError . ': ' . $strError);
     }
     $timeout = (int) floor($r['timeout']);
     $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
     stream_set_timeout($handle, $timeout, $utimeout);
     if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
         //Some proxies require full URL in this field.
         $requestPath = $url;
     } else {
         $requestPath = $arrURL['path'] . (isset($arrURL['query']) ? '?' . $arrURL['query'] : '');
     }
     if (empty($requestPath)) {
         $requestPath .= '/';
     }
     $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
     if ($proxy->is_enabled() && $proxy->send_through_proxy($url)) {
         $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
     } else {
         $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
     }
     if (isset($r['user-agent'])) {
         $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
     }
//.........这里部分代码省略.........