- <?php
- namespace p3k\HTTP;
-
- class Curl implements Transport {
-
- protected $_timeout = 4;
- protected $_max_redirects = 8;
- static protected $_http_version = null;
- private $_last_seen_url = null;
- private $_last_seen_code = null;
- private $_current_headers = [];
- private $_current_redirects = [];
- private $_debug_header = '';
-
- public function set_max_redirects($max) {
- $this->_max_redirects = $max;
- }
-
- public function set_timeout($timeout) {
- $this->_timeout = $timeout;
- }
-
- public function get($url, $headers=[]) {
- $ch = curl_init($url);
- $this->_set_curlopts($ch, $url);
- if($headers)
- curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
- $response = curl_exec($ch);
- return [
- 'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
- 'header' => implode("\r\n", array_map(function ($a) { return $a[0] . ': ' . $a[1]; }, $this->_current_headers)),
- 'body' => $response,
- 'redirects' => $this->_current_redirects,
- 'error' => self::error_string_from_code(curl_errno($ch)),
- 'error_description' => curl_error($ch),
- 'url' => $this->_last_seen_url,
- 'debug' => $this->_debug_header . "\r\n" . $response
- ];
- }
-
- public function post($url, $body, $headers=[]) {
- $ch = curl_init($url);
- $this->_set_curlopts($ch, $url);
- curl_setopt($ch, CURLOPT_POST, true);
- curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
- if($headers)
- curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
- $response = curl_exec($ch);
- return [
- 'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
- 'header' => implode("\r\n", array_map(function ($a) { return $a[0] . ': ' . $a[1]; }, $this->_current_headers)),
- 'body' => $response,
- 'redirects' => $this->_current_redirects,
- 'error' => self::error_string_from_code(curl_errno($ch)),
- 'error_description' => curl_error($ch),
- 'url' => $this->_last_seen_url,
- 'debug' => $this->_debug_header . "\r\n" . $response
- ];
- }
-
- public function head($url, $headers=[]) {
- $ch = curl_init($url);
- $this->_set_curlopts($ch, $url);
- if($headers)
- curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
- curl_setopt($ch, CURLOPT_NOBODY, true);
- $response = curl_exec($ch);
- return [
- 'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
- 'header' => implode("\r\n", array_map(function ($a) { return $a[0] . ': ' . $a[1]; }, $this->_current_headers)),
- 'redirects' => $this->_current_redirects,
- 'error' => self::error_string_from_code(curl_errno($ch)),
- 'error_description' => curl_error($ch),
- 'url' => $this->_last_seen_url,
- 'debug' => $this->_debug_header . "\r\n" . $response
- ];
- }
-
- private function _set_curlopts($ch, $url) {
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
- curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $this->_max_redirects > 0);
- curl_setopt($ch, CURLOPT_MAXREDIRS, $this->_max_redirects);
- curl_setopt($ch, CURLOPT_TIMEOUT_MS, round($this->_timeout * 1000));
- curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, 2000);
- curl_setopt($ch, CURLOPT_HTTP_VERSION, $this->_http_version());
- curl_setopt($ch, CURLOPT_HEADERFUNCTION, [$this, '_header_function']);
- }
-
- private function _http_version() {
- if (static::$_http_version !== null)
- return static::$_http_version;
- if (defined('CURL_HTTP_VERSION_2')) { // PHP 7.0.7
- static::$_http_version = CURL_HTTP_VERSION_2;
- } else if (defined('CURL_HTTP_VERSION_2_0')) { // Recommended in online articles
- static::$_http_version = CURL_HTTP_VERSION_2_0;
- } else { // Linked curl might be newer than PHP, send (current) INT value anyway.
- static::$_http_version = 3;
- }
- return static::$_http_version;
- }
-
- private function _header_function($curl, $header) {
- $this->_debug_header .= $header;
- $current_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL);
- if ($current_url !== $this->_last_seen_url) {
- if ($this->_last_seen_url !== null) {
- $this->_current_redirects[] = [
- 'code' => $this->_last_seen_code,
- 'from' => $this->_last_seen_url,
- 'to' => $current_url,
- ];
- } else {
- $this->_current_redirects = [];
- }
- $this->_current_headers = [];
- $this->_last_seen_url = $current_url;
- $this->_last_seen_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
- }
- $length = strlen($header);
- $header = explode(':', $header, 2);
- if (count($header) !== 2) {
- return $length;
- }
- $this->_current_headers[] = array_map('trim', [$header[0], $header[1]]);
- return $length;
- }
-
- public static function error_string_from_code($code) {
- switch($code) {
- case 0:
- return '';
- case CURLE_COULDNT_RESOLVE_HOST:
- return 'dns_error';
- case CURLE_COULDNT_CONNECT:
- return 'connect_error';
- case CURLE_OPERATION_TIMEDOUT:
- return 'timeout';
- case CURLE_SSL_CONNECT_ERROR:
- return 'ssl_error';
- case CURLE_SSL_CERTPROBLEM:
- return 'ssl_cert_error';
- case CURLE_SSL_CIPHER:
- return 'ssl_unsupported_cipher';
- case CURLE_SSL_CACERT:
- return 'ssl_cert_error';
- case CURLE_TOO_MANY_REDIRECTS:
- return 'too_many_redirects';
- default:
- return 'unknown';
- }
- }
- }
|