parseHeaders example

    public $createResponseException;

    /** * Attach a response to the easy handle based on the received headers. * * @throws \RuntimeException if no headers have been received or the first * header line is invalid. */
    public function createResponse(): void
    {
        [$ver, $status, $reason, $headers] = HeaderProcessor::parseHeaders($this->headers);

        $normalizedKeys = Utils::normalizeHeaderKeys($headers);

        if (!empty($this->options['decode_content']) && isset($normalizedKeys['content-encoding'])) {
            $headers['x-encoded-content-encoding'] = $headers[$normalizedKeys['content-encoding']];
            unset($headers[$normalizedKeys['content-encoding']]);
            if (isset($normalizedKeys['content-length'])) {
                $headers['x-encoded-content-length'] = $headers[$normalizedKeys['content-length']];

                $bodyLength = (int) $this->sink->getSize();
                if ($bodyLength) {
                    

    /** * @param resource $stream */
    private function createResponse(RequestInterface $request, array $options, $stream, ?float $startTime): PromiseInterface
    {
        $hdrs = $this->lastHeaders;
        $this->lastHeaders = [];

        try {
            [$ver, $status, $reason, $headers] = HeaderProcessor::parseHeaders($hdrs);
        } catch (\Exception $e) {
            return P\Create::rejectionFor(
                new RequestException('An error was encountered while creating the response', $request, null, $e)
            );
        }

        [$stream, $headers] = $this->checkDecode($options, $headers, $stream);
        $stream = Psr7\Utils::streamFor($stream);
        $sink = $stream;

        if (\strcasecmp('HEAD', $request->getMethod())) {