/**
* static method to close open http connections.
* example: force closing keep-alive connections that are no longer needed.
* @static
* @return void
*/
public static function disconnect()
{
if (is_resource(self::$curl) && get_resource_type(self::$curl) == 'curl') {
curl_close(self::$curl);
}
self::$curl = null;
}
/**
* method will do the actual http call using curl libary.
* you can choose between POST/GET via config.
* will throw Exception if http request/curl times out or fails
* @param String $url url beeing requested
* @param array $opts an array of query paramters
* @throws \Pheal\Exceptions\ConnectionException
* @throws \Pheal\Exceptions\HTTPException
* @return string raw http response
*/
public function fetch($url, $opts)
{
// init curl
if (!(is_resource(self::$curl) && get_resource_type(self::$curl) == 'curl')) {
self::$curl = curl_init();
}
// custom user agent
curl_setopt(self::$curl, CURLOPT_USERAGENT, "PhealNG/" . Pheal::VERSION . ' ' . Config::getInstance()->http_user_agent);
// custom outgoing ip address
if (($http_interface_ip = Config::getInstance()->http_interface_ip) != false) {
curl_setopt(self::$curl, CURLOPT_INTERFACE, $http_interface_ip);
}
// ignore ssl peer verification if needed
if (substr($url, 0, 5) == "https") {
curl_setopt(self::$curl, CURLOPT_SSL_VERIFYPEER, Config::getInstance()->http_ssl_verifypeer);
if (Config::getInstance()->http_ssl_verifypeer && Config::getInstance()->http_ssl_certificate_file !== false) {
curl_setopt(self::$curl, CURLOPT_CAINFO, Config::getInstance()->http_ssl_certificate_file);
}
}
// http timeout
if (($http_timeout = Config::getInstance()->http_timeout) != false) {
curl_setopt(self::$curl, CURLOPT_TIMEOUT, $http_timeout);
}
// use post for params
if (count($opts) && Config::getInstance()->http_post) {
curl_setopt(self::$curl, CURLOPT_POST, true);
curl_setopt(self::$curl, CURLOPT_POSTFIELDS, $opts);
} else {
curl_setopt(self::$curl, CURLOPT_POST, false);
// attach url parameters
if (count($opts)) {
$url .= "?" . http_build_query($opts, '', '&');
}
}
// additional headers
$headers = array();
// enable/disable keepalive
if (($http_keepalive = Config::getInstance()->http_keepalive) != false) {
curl_setopt(self::$curl, CURLOPT_FORBID_REUSE, false);
$http_keepalive = $http_keepalive === true ? 15 : (int) $http_keepalive;
$headers[] = "Connection: keep-alive";
$headers[] = "Keep-Alive: timeout=" . $http_keepalive . ", max=1000";
} else {
curl_setopt(self::$curl, CURLOPT_FORBID_REUSE, true);
}
// allow all encodings
curl_setopt(self::$curl, CURLOPT_ENCODING, "");
// curl defaults
curl_setopt(self::$curl, CURLOPT_URL, $url);
curl_setopt(self::$curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt(self::$curl, CURLOPT_RETURNTRANSFER, true);
// call
$result = curl_exec(self::$curl);
$errno = curl_errno(self::$curl);
$error = curl_error(self::$curl);
// response http headers
$httpCode = curl_getinfo(self::$curl, CURLINFO_HTTP_CODE);
if (!Config::getInstance()->http_keepalive) {
self::disconnect();
}
// http errors
if ($httpCode >= 400) {
// ccp is using error codes even if they send a valid application
// error response now, so we have to use the content as result
// for some of the errors. This will actually break if CCP ever uses
// the HTTP Status for an actual transport related error.
switch ($httpCode) {
case 400:
case 403:
case 500:
case 503:
return $result;
break;
default:
}
throw new HTTPException($httpCode, $url);
}
// curl errors
if ($errno) {
throw new ConnectionException($error, $errno);
} else {
return $result;
}
}