normalizeHeaderKeys example

/** * 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) {
                    $headers[$normalizedKeys['content-length']] = $bodyLength;
                } else {
                    

return Utils::defaultCaBundle();
}

/** * Creates an associative array of lowercase header names to the actual * header casing. * * @deprecated normalize_header_keys will be removed in guzzlehttp/guzzle:8.0. Use Utils::normalizeHeaderKeys instead. */
function normalize_header_keys(array $headers): array
{
    return Utils::normalizeHeaderKeys($headers);
}

/** * Returns true if the provided host matches any of the no proxy areas. * * This method will strip a port from the host if it is present. Each pattern * can be matched with an exact match (e.g., "foo.com" == "foo.com") or a * partial match: (e.g., "foo.com" == "baz.foo.com" and ".foo.com" == * "baz.foo.com", but ".foo.com" != "foo.com"). * * Areas are matched in the following cases: * 1. "*" (without quotes) always matches any hosts. * 2. An exact match. * 3. The area starts with "." and the area is the last part of the host. e.g. * '.mit.edu' will match any host that ends with '.mit.edu'. * * @param string $host Host to check against the patterns. * @param string[] $noProxyArray An array of host patterns. * * @throws Exception\InvalidArgumentException * * @deprecated is_host_in_noproxy will be removed in guzzlehttp/guzzle:8.0. Use Utils::isHostInNoProxy instead. */

return \is_string($sink) ? new Psr7\LazyOpenStream($sink, 'w+') : Psr7\Utils::streamFor($sink);
    }

    /** * @param resource $stream */
    private function checkDecode(array $options, array $headers, $stream): array
    {
        // Automatically decode responses when instructed.         if (!empty($options['decode_content'])) {
            $normalizedKeys = Utils::normalizeHeaderKeys($headers);
            if (isset($normalizedKeys['content-encoding'])) {
                $encoding = $headers[$normalizedKeys['content-encoding']];
                if ($encoding[0] === 'gzip' || $encoding[0] === 'deflate') {
                    $stream = new Psr7\InflateStream(Psr7\Utils::streamFor($stream));
                    $headers['x-encoded-content-encoding'] = $headers[$normalizedKeys['content-encoding']];

                    // Remove content-encoding header                     unset($headers[$normalizedKeys['content-encoding']]);

                    // Fix content-length header                     if (isset($normalizedKeys['content-length'])) {