$options getBoundary $result $uri $timeoutRequiresNoSignal $timeoutRequiresNoSignal $easy->handle $easy->handle $easy->handle $easy->handle $easy->handle $easy->handle $resource $resource $resource $resource $resource $resource $sslKey $sslKey $timeoutRequiresNoSignal private $handles = []; resource[]|\CurlHandle[] $easy->handle $easy->handle $this->active $this->_mh $this->_mh $this->_mh $this->_mh $this->_mh $this->_mh $this->_mh resource|\CurlMultiHandle resource|\CurlMultiHandle|null $this->_mh (string) $startLine[2] resource|\CurlHandle $uri $this->stack $this->stack $this->stack $this->stack $request $location ($this->delay)(++$options['retries'], $response) \var_dump($input)