* @param links
     * @return
     */
    private static CacheEntry<DfsReferralDataInternal> cacheRootReferral ( CIFSContext tf, String domain, String root,
            Map<String, CacheEntry<DfsReferralDataInternal>> roots, DfsReferralDataInternal dr, CacheEntry<DfsReferralDataInternal> links ) {
        if ( dr != null ) {
            links = new CacheEntry<>(tf.getConfig().getDfsTtl());
            links.map.put("\\", dr);

  }

  private void addToCache(K key, V value) {
    addToCache(new CacheEntry<K, V>(key, value));
  }

  private void addToCache(CacheEntry<K, V> entry) {
    // Slide new entry into first cache position. Drop previous entry in second cache position.
    cacheEntry2 = cacheEntry1;
    cacheEntry1 = entry;
  }

  private static final class CacheEntry<K, V> {
    final K key;
    final V value;

    static final boolean DISABLED = Config.getBoolean("jcifs.smb1.smb.client.dfs.disabled", false);

    protected static CacheEntry FALSE_ENTRY = new Dfs.CacheEntry(0L);

    protected CacheEntry _domains = null; /* aka trusted domains cache */
    protected CacheEntry referrals = null;

    public HashMap getTrustedDomains(NtlmPasswordAuthentication auth) throws SmbAuthException {

        if( CACHE_POLICY == 0 ) {
            return;
        }
        synchronized( ADDRESS_CACHE ) {
            CacheEntry entry = (CacheEntry)ADDRESS_CACHE.get( hostName );
            if( entry == null ) {
                entry = new CacheEntry( hostName, addr, expiration );
                ADDRESS_CACHE.put( hostName, entry );
            } else {
                entry.address = addr;

  V getIfCached(@CheckForNull Object key) {
    Entry<K, V> entry = cacheEntry; // store local reference for thread-safety

    // Check cache. We use == on purpose because it's cheaper and a cache miss is ok.
    if (entry != null && entry.getKey() == key) {
      return entry.getValue();
    }
    return null;
  }

  void clearCache() {
    cacheEntry = null;
  }

        this.resolveOrder = tc.getConfig().getResolveOrder();

        initCache(tc);
    }

    static final class CacheEntry {

        Name hostName;
        NbtAddress address;
        long expiration;


        CacheEntry ( Name hostName, NbtAddress address, long expiration ) {
            this.hostName = hostName;
            this.address = address;

    assertThat(cache.networkCount()).isEqualTo(2)
    assertThat(cache.hitCount()).isEqualTo(0)
  }

  private fun corruptCertificate(cacheEntry: Path) {
    var content = fileSystem.source(cacheEntry).buffer().readUtf8()
    content = content.replace("MII", "!!!")
    fileSystem.sink(cacheEntry).buffer().writeUtf8(content).close()
  }

  @Test
  fun responseCachingAndRedirects() {
    server.enqueue(