Parser::http_version()

222    protected function http_version()223    {224        if (strpos($this->data, "\x0A") !== false && strtoupper(substr($this->data, 0, 5)) === 'HTTP/') {225            $len = strspn($this->data, '0123456789.', 5);226            $this->http_version = substr($this->data, 5, $len);227            $this->position += 5 + $len;228            if (substr_count($this->http_version, '.') <= 1) {229                $this->http_version = (float) $this->http_version;230                $this->position += strspn($this->data, "\x09\x20", $this->position);231                $this->state = self::STATE_STATUS;232            } else {233                $this->state = self::STATE_ERROR;234            }235        } else {236            $this->state = self::STATE_ERROR;237        }238    }