}

    /**
     * Manually unblock an IP
     *
     * @param sourceIp the IP to unblock
     * @return true if IP was unblocked, false if not found
     */
    public boolean unblockIp(String sourceIp) {
        IpAttempts ip = ipAttempts.get(sourceIp);
        if (ip != null) {
            ip.reset();
            log.info("Manually unblocked IP: {}", sourceIp);
            return true;
        }

        assertFalse(rateLimiter.checkAttempt("user6", ip), "IP should be blocked");

        // Manually unblock
        assertTrue(rateLimiter.unblockIp(ip), "Manual unblock should succeed");

        // Should be allowed again
        assertTrue(rateLimiter.checkAttempt("user7", ip), "Should be allowed after manual unblock");
    }

    @Test
    public void testNullUsername() throws Exception {

  fun assertNoMoreTasks() {
    taskRunner.assertLockNotHeld()

    taskRunner.withLock {
      assertThat(activeThreads).isEqualTo(0)
    }
  }

  /** Unblock a waiting task thread. Used by the test thread only. */
  fun interruptCoordinatorThread() {
    taskRunner.assertLockNotHeld()
    require(currentTask == TestThreadSerialTask)

    connection.setReadTimeout(500)
    try {
      connection.getResponseCode()
      fail<Any>()
    } catch (expected: SocketTimeoutException) {
    }

    // Shutting down the server should unblock the dispatcher.
    server.shutdown()
  }

  @Test
  fun requestUrlReconstructed() {
    server.enqueue(MockResponse().setBody("hello world"))
    val url = server.url("/a/deep/path?key=foo%20bar").toUrl()

          }
        };
    f.set("foo");
  }

  // Regression test for a case where we would fail to execute listeners immediately on done futures
  // this would be observable from a waiter that was just unblocked.
  public void testListenersExecuteImmediately_afterWaiterWakesUp() throws Exception {
    AbstractFuture<String> f =
        new AbstractFuture<String>() {
          @Override

    connection.readTimeout = 500
    assertFailsWith<SocketTimeoutException> {
      connection.responseCode
    }

    // Closing the server should unblock the dispatcher.
    server.close()
  }

  @Test
  fun requestUrlReconstructed() {
    server.enqueue(
      MockResponse
        .Builder()
        .body("hello world")
        .build(),

          }
        };
    f.set("foo");
  }

  // Regression test for a case where we would fail to execute listeners immediately on done futures
  // this would be observable from a waiter that was just unblocked.
  public void testListenersExecuteImmediately_afterWaiterWakesUp() throws Exception {
    AbstractFuture<String> f =
        new AbstractFuture<String>() {
          @Override