return false;
        }

        try {
            final int pos = path.indexOf('/', 6);
            final URI uri = new URI(pos == -1 ? path : path.substring(0, pos));
            if (!"ftp".equals(uri.getScheme()) || (StringUtil.isNotBlank(server) && !server.equals(uri.getHost()))) {
                return false;
            }
            int p = uri.getPort();
            if (p == -1) {
                p = 21;

                    logger.warn("Invalid URI for resource: url={}", resource, e);
                    continue;
                }

                if ("file".equals(resourceUri.getScheme())) {
                    final File directory = new File(resourceUri);
                    if (directory.exists() && directory.isDirectory()) {
                        final File[] files = directory.listFiles(File::isDirectory);

import okio.IOException

/**
 * Protocols that OkHttp implements for [ALPN][ietf_alpn] selection.
 *
 * ## Protocol vs Scheme
 *
 * Despite its name, [java.net.URL.getProtocol] returns the [scheme][java.net.URI.getScheme] (http,
 * https, etc.) of the URL, not the protocol (http/1.1, spdy/3.1, etc.). OkHttp uses the word
 * *protocol* to identify how HTTP messages are framed.
 *

                throw new CrawlingAccessException("Invalid FTP URL: " + s, e);
            }

            if (!"ftp".equals(uri.getScheme())) {
                throw new CrawlingAccessException(
                        "Invalid FTP scheme: expected 'ftp://' but got '" + uri.getScheme() + "://' for URI: " + s);
            }

            final String path = uri.getPath();
            if (path == null) {

        try {
            final URI baseUri = URI.create(baseUrl);
            final String resolveTarget = canonicalUrl.startsWith(":") ? baseUri.getScheme() + canonicalUrl : canonicalUrl;
            return baseUri.resolve(resolveTarget).toString();
        } catch (final IllegalArgumentException e) {

// Tests getURLScheme function behavior.
func TestGetURLScheme(t *testing.T) {
	tls := false
	gotScheme := getURLScheme(tls)
	if gotScheme != httpScheme {
		t.Errorf("Expected %s, got %s", httpScheme, gotScheme)
	}
	tls = true
	gotScheme = getURLScheme(tls)
	if gotScheme != httpsScheme {
		t.Errorf("Expected %s, got %s", httpsScheme, gotScheme)
	}
}

func TestTrackingResponseWriter(t *testing.T) {