protected function validate($data)
    {
        $data = $this->validateSegment($data);
        if (! $data) {
            return $data;
        }

        $this->saveInternalEncoding();
        if (! $this->isValidHostLength($data)) {
            $this->restoreInternalEncoding();
            throw new RuntimeException('Invalid hostname, check its length');
        }

        if (! $this->isValidHostPattern($data)) {
            $this->restoreInternalEncoding();
            throw new RuntimeException('Invalid host label, check its content');
        }

        if (! $this->isValidHostLabels($data)) {
            $this->restoreInternalEncoding();
            throw new RuntimeException('Invalid host label counts, check its count');
        }

        $data = $this->sanitizeValue($data);
        $data = explode(
            $this->delimiter,
            $this->punycode->decode(implode($this->delimiter, $data))
        );
        $this->restoreInternalEncoding();

        return $data;
    }