Source
File: wp-includes/Requests/Transport/fsockopen.php
public function request($url, $headers = array(), $data = array(), $options = array()) {
$options['hooks']->dispatch('fsockopen.before_request');
$url_parts = parse_url($url);
if (empty($url_parts)) {
throw new Requests_Exception('Invalid URL.', 'invalidurl', $url);
}
$host = $url_parts['host'];
$context = stream_context_create();
$verifyname = false;
$case_insensitive_headers = new Requests_Utility_CaseInsensitiveDictionary($headers);
// HTTPS support
if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') {
$remote_socket = 'ssl://' . $host;
if (!isset($url_parts['port'])) {
$url_parts['port'] = 443;
}
$context_options = array(
'verify_peer' => true,
// 'CN_match' => $host,
'capture_peer_cert' => true
);
$verifyname = true;
// SNI, if enabled (OpenSSL >=0.9.8j)
if (defined('OPENSSL_TLSEXT_SERVER_NAME') && OPENSSL_TLSEXT_SERVER_NAME) {
$context_options['SNI_enabled'] = true;
if (isset($options['verifyname']) && $options['verifyname'] === false) {
$context_options['SNI_enabled'] = false;
}
}
if (isset($options['verify'])) {
if ($options['verify'] === false) {
$context_options['verify_peer'] = false;
}
elseif (is_string($options['verify'])) {
$context_options['cafile'] = $options['verify'];
}
}
if (isset($options['verifyname']) && $options['verifyname'] === false) {
$context_options['verify_peer_name'] = false;
$verifyname = false;
}
stream_context_set_option($context, array('ssl' => $context_options));
}
else {
$remote_socket = 'tcp://' . $host;
}
$this->max_bytes = $options['max_bytes'];
if (!isset($url_parts['port'])) {
$url_parts['port'] = 80;
}
$remote_socket .= ':' . $url_parts['port'];
set_error_handler(array($this, 'connect_error_handler'), E_WARNING | E_NOTICE);
$options['hooks']->dispatch('fsockopen.remote_socket', array(&$remote_socket));
$socket = stream_socket_client($remote_socket, $errno, $errstr, ceil($options['connect_timeout']), STREAM_CLIENT_CONNECT, $context);
restore_error_handler();
if ($verifyname && !$this->verify_certificate_from_context($host, $context)) {
throw new Requests_Exception('SSL certificate did not match the requested domain name', 'ssl.no_match');
}
if (!$socket) {
if ($errno === 0) {
// Connection issue
throw new Requests_Exception(rtrim($this->connect_error), 'fsockopen.connect_error');
}
throw new Requests_Exception($errstr, 'fsockopenerror', null, $errno);
}
$data_format = $options['data_format'];
if ($data_format === 'query') {
$path = self::format_get($url_parts, $data);
$data = '';
}
else {
$path = self::format_get($url_parts, array());
}
$options['hooks']->dispatch('fsockopen.remote_host_path', array(&$path, $url));
$request_body = '';
$out = sprintf("%s %s HTTP/%.1F\r\n", $options['type'], $path, $options['protocol_version']);
if ($options['type'] !== Requests::TRACE) {
if (is_array($data)) {
$request_body = http_build_query($data, null, '&');
}
else {
$request_body = $data;
}
if (!empty($data)) {
if (!isset($case_insensitive_headers['Content-Length'])) {
$headers['Content-Length'] = strlen($request_body);
}
if (!isset($case_insensitive_headers['Content-Type'])) {
$headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
}
}
}
if (!isset($case_insensitive_headers['Host'])) {
$out .= sprintf('Host: %s', $url_parts['host']);
if (( 'http' === strtolower($url_parts['scheme']) && $url_parts['port'] !== 80 ) || ( 'https' === strtolower($url_parts['scheme']) && $url_parts['port'] !== 443 )) {
$out .= ':' . $url_parts['port'];
}
$out .= "\r\n";
}
if (!isset($case_insensitive_headers['User-Agent'])) {
$out .= sprintf("User-Agent: %s\r\n", $options['useragent']);
}
$accept_encoding = $this->accept_encoding();
if (!isset($case_insensitive_headers['Accept-Encoding']) && !empty($accept_encoding)) {
$out .= sprintf("Accept-Encoding: %s\r\n", $accept_encoding);
}
$headers = Requests::flatten($headers);
if (!empty($headers)) {
$out .= implode("\r\n", $headers) . "\r\n";
}
$options['hooks']->dispatch('fsockopen.after_headers', array(&$out));
if (substr($out, -2) !== "\r\n") {
$out .= "\r\n";
}
if (!isset($case_insensitive_headers['Connection'])) {
$out .= "Connection: Close\r\n";
}
$out .= "\r\n" . $request_body;
$options['hooks']->dispatch('fsockopen.before_send', array(&$out));
fwrite($socket, $out);
$options['hooks']->dispatch('fsockopen.after_send', array($out));
if (!$options['blocking']) {
fclose($socket);
$fake_headers = '';
$options['hooks']->dispatch('fsockopen.after_request', array(&$fake_headers));
return '';
}
$timeout_sec = (int) floor($options['timeout']);
if ($timeout_sec == $options['timeout']) {
$timeout_msec = 0;
}
else {
$timeout_msec = self::SECOND_IN_MICROSECONDS * $options['timeout'] % self::SECOND_IN_MICROSECONDS;
}
stream_set_timeout($socket, $timeout_sec, $timeout_msec);
$response = $body = $headers = '';
$this->info = stream_get_meta_data($socket);
$size = 0;
$doingbody = false;
$download = false;
if ($options['filename']) {
$download = fopen($options['filename'], 'wb');
}
while (!feof($socket)) {
$this->info = stream_get_meta_data($socket);
if ($this->info['timed_out']) {
throw new Requests_Exception('fsocket timed out', 'timeout');
}
$block = fread($socket, Requests::BUFFER_SIZE);
if (!$doingbody) {
$response .= $block;
if (strpos($response, "\r\n\r\n")) {
list($headers, $block) = explode("\r\n\r\n", $response, 2);
$doingbody = true;
}
}
// Are we in body mode now?
if ($doingbody) {
$options['hooks']->dispatch('request.progress', array($block, $size, $this->max_bytes));
$data_length = strlen($block);
if ($this->max_bytes) {
// Have we already hit a limit?
if ($size === $this->max_bytes) {
continue;
}
if (($size + $data_length) > $this->max_bytes) {
// Limit the length
$limited_length = ($this->max_bytes - $size);
$block = substr($block, 0, $limited_length);
}
}
$size += strlen($block);
if ($download) {
fwrite($download, $block);
}
else {
$body .= $block;
}
}
}
$this->headers = $headers;
if ($download) {
fclose($download);
}
else {
$this->headers .= "\r\n\r\n" . $body;
}
fclose($socket);
$options['hooks']->dispatch('fsockopen.after_request', array(&$this->headers, &$this->info));
return $this->headers;
}