assertEquals("2001:db8::1", method.invoke(null, "2001:0db8:0:0:0:0:0:1"));

            // Longest sequence of zeros compressed (3 zeros at end vs 1 zero at start)
            assertEquals("2001:db8:0:1::1", method.invoke(null, "2001:0db8:0:1:0:0:0:1"));

            // No compression when all segments are non-zero (just remove leading zeros)

 *
 * <p>Example usage:
 *
 * {@snippet :
 * HostAndPort hp =
 *     HostAndPort.fromString("[2001:db8::1]")
 *         .withDefaultPort(80)
 *         .requireBracketsForIPv6();
 * hp.getHost();  // returns "2001:db8::1"
 * hp.getPort();  // returns 80
 * hp.toString(); // returns "[2001:db8::1]:80"
 * }
 *
 * <p>Here are some examples of recognized formats:
 *
 * <ul>
 *   <li>example.com

        TimeoutManager.getInstance().start();
        assertNotNull(TimeoutManager.getInstance().thread);
        Thread.sleep(2000);
        assertEquals(count, expiredCount);
        assertEquals(1, TimeoutManager.getInstance().getTimeoutTaskCount());
        task.cancel();
        Thread.sleep(2000);
        assertEquals(0, TimeoutManager.getInstance().getTimeoutTaskCount());
        assertNull(TimeoutManager.getInstance().thread);
    }

        long delay2 = policy.getDelayMs(2);
        long delay3 = policy.getDelayMs(3);

        // Then - All delays should be the same
        assertEquals(2000, delay1);
        assertEquals(2000, delay2);
        assertEquals(2000, delay3);
    }

    @Test
    @DisplayName("Should provide meaningful toString output")
    void testToString() {
        // Given

		{xRealIP, "[2001:db8:cafe::17]:4711", "[2001:db8:cafe::17]"},                  // IPv6 address
		{xRealIP, "", ""},                                                             // None
		{forwarded, `for="_gazonk"`, "_gazonk"},                                       // Hostname
		{forwarded, `For="[2001:db8:cafe::17]:4711`, `[2001:db8:cafe::17]`},           // IPv6 address

  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;

    assertThat("2001:db8::1".toCanonicalHost()).isEqualTo("2001:db8::1")
    assertThat("::ffff:192.168.0.1".toCanonicalHost()).isEqualTo("192.168.0.1")
    assertThat(
      "FEDC:BA98:7654:3210:FEDC:BA98:7654:3210".toCanonicalHost(),
    ).isEqualTo(
      "fedc:ba98:7654:3210:fedc:ba98:7654:3210",
    )

    assertThat(
      "1080:0:0:0:8:800:200C:417A".toCanonicalHost(),

    assertThat(parse("http://[2001:db8::1]/").host).isEqualTo("2001:db8::1")
    assertThat(parse("http://[2001:db8:0:0:0:0:2:1]/").host).isEqualTo("2001:db8::2:1")
    assertThat(parse("http://[2001:db8:0:1:1:1:1:1]/").host).isEqualTo("2001:db8:0:1:1:1:1:1")
    assertThat(parse("http://[2001:db8:0:0:1:0:0:1]/").host).isEqualTo("2001:db8::1:0:0:1")

        byte[] payload = new byte[] { 1, 2, 3, 4 };

        w.start();

        // Wait until writer thread signals readiness
        synchronized (w) {
            long deadline = System.currentTimeMillis() + 2000;
            while (!w.isReady() && System.currentTimeMillis() < deadline) {
                w.wait(10);
            }
            assertTrue(w.isReady(), "WriterThread should be ready to accept work");

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