NbtAddress addr;

        if (name.hexCode == 0x1d && svr == null) {
            svr = CLIENT.baddr; // bit of a hack but saves a lookup
        }
        name.srcHashCode = svr != null ? svr.hashCode() : 0;
        addr = getCachedAddress(name);

        if (addr == null) {
            addr = (NbtAddress) checkLookupTable(name);

            // While we could look up the domain controller/KDC we cannot really make the java kerberos implementation
            // use a KDC of our choice.
            // A potential workaround would be to try to get the server FQDN by reverse lookup, but this might have
            // security implications and also is not how Microsoft does it.

         * than a handful of exceptions. But it seems prudent to set a cap on how many we'll cache.
         * This avoids out-of-control memory consumption, and it keeps the cache from growing so
         * large that doing the lookup is noticeably slower than redoing the work would be.
         *
         * Ideally we'd have a real eviction policy, but until we see a problem in practice, I hope

                    links = null;
                }

                if (links != null) {
                    final String link = "\\";

                    /* Lookup the domain based DFS root target referral. Note the
                     * path is just "\" and not "\example.com\root".
                     */
                    dr = (DfsReferral) links.map.get(link);

     * fallbacks to prevent the host machine's various IP addresses from interfering.
     */
    private val SINGLE_INET_ADDRESS_DNS =
      Dns { hostname ->
        val addresses = Dns.SYSTEM.lookup(hostname)
        listOf(addresses[0])
      }

    private operator fun Throwable?.plus(throwable: Throwable): Throwable {
      if (this != null) {
        addSuppressed(throwable)
        return this

     * found in the cache. This method should be called by the loading thread, as well as by threads
     * blocking on the load. Multiple concurrent calls to {@link Cache} lookup methods with the same
     * key on an absent value should result in a single call to either {@code recordLoadSuccess} or
     * {@code recordLoadException} and multiple calls to this method, despite all being served by

          call = call,
          fastFallback = fastFallback,
        )
      routeSelector = newRouteSelector
    }

    // List available IP addresses for the current proxy. This may block in Dns.lookup().
    if (!newRouteSelector.hasNext()) throw IOException("exhausted all routes")
    val newRouteSelection = newRouteSelector.next()
    routeSelection = newRouteSelection

                    request.setPath(dunc);
                }

                if (!t.getShare().equals(dr.getShare())) {
                    // this should only happen for standalone roots or if the DC/domain root lookup failed
                    IOException last;
                    final DfsReferralData start = dr;
                    do {
                        if (log.isDebugEnabled()) {

     * This method handles the resolution of SPNEGO credentials by checking
     * if the user is an admin user or needs to be authenticated through LDAP.
     *
     * @param resolver The credential resolver to use for user lookup
     */
    @Override
    public void resolveCredential(final LoginCredentialResolver resolver) {
        resolver.resolve(SpnegoCredential.class, credential -> {

        SmbResourceLocatorImpl bad = locator("smb://badhost/");
        CIFSException ex = assertThrows(CIFSException.class, bad::getAddress);
        assertTrue(ex.getMessage().contains("Failed to lookup address"));
    }

    @Test
    @DisplayName("hashCode/equals based on address or server fallback")
    void testEqualsAndHashCode() throws Exception {
        UniAddress a = mock(UniAddress.class);