Aerys\BodyParser::updateFieldSize PHP Method

    private function updateFieldSize($field, $data)
    {
        $this->curSizes[$field] += \strlen($data);
        if (isset($this->sizes[$field])) {
            if ($this->curSizes[$field] > $this->sizes[$field]) {
                $this->fail();
                return true;
            }
        } else {
            $this->usedSize += \strlen($data);
            if ($this->usedSize > $this->size) {
                $this->fail();
                return true;
            }
        }
        return false;
    }