if (message != null) {
                message = message.toLowerCase();
                // Connection reset, network unreachable, etc. might be temporary
                return message.contains("connection reset") || message.contains("network unreachable")
                        || message.contains("host unreachable") || message.contains("timeout");
            }
            return true; // Generic socket errors might be recoverable
        }

        Exception expectedCause = new IOException("Network unreachable");

        try {
            throw new LdapOperationException(expectedMessage, expectedCause);
        } catch (LdapOperationException e) {
            assertEquals(expectedMessage, e.getMessage());
            assertEquals(expectedCause, e.getCause());
            assertEquals("Network unreachable", e.getCause().getMessage());
        } catch (Exception e) {

      throw new AssertionError("this statement should be unreachable");
    }

    @Override
    BoundType typeAsUpperBound() {
      throw new IllegalStateException();
    }

    @Override
    Cut<Comparable<?>> withLowerBoundType(
        BoundType boundType, DiscreteDomain<Comparable<?>> domain) {
      throw new AssertionError("this statement should be unreachable");
    }

    @Override

    void testStringAndThrowableConstructor() {
        // Test the constructor with both message and cause
        String message = "Failed to connect due to timeout.";
        Throwable cause = new IllegalStateException("Network unreachable");
        ConnectionTimeoutException exception = new ConnectionTimeoutException(message, cause);
        assertEquals(message, exception.getMessage(), "Message should match the provided string");

    public void test_exceptionChaining() {
        // Test exception chaining with multiple levels
        Exception rootCause = new Exception("Network timeout");
        Exception middleCause = new Exception("SSO provider unreachable", rootCause);
        SsoProcessException topException = new SsoProcessException("SSO authentication failed", middleCause);

        assertEquals("SSO authentication failed", topException.getMessage());

   *
   * <p>This method always throws an exception. The {@code RuntimeException} return type allows
   * client code to signal to the compiler that statements after the call are unreachable. Example
   * usage:
   *
   * <pre>
   * T doSomething() {
   *   try {
   *     return someMethodThatCouldThrowAnything();
   *   } catch (IKnowWhatToDoWithThisException e) {
   *     return handle(e);

   * appear in this multimap.
   */
  @Override
  public ImmutableSet<K> keySet() {
    return map.keySet();
  }

  @Override
  Set<K> createKeySet() {
    throw new AssertionError("unreachable");
  }

  /**
   * Returns an immutable map that associates each key with its corresponding values in the
   * multimap. Keys and values appear in the same order as in this multimap.
   */
  @Override

		if len(line) > 0 && line[len(line)-1] == '\r' {
			// Put the '\r' back on buf and drop it from line.
			// Let the next call to ReadLine check for "\r\n".
			if b.r == 0 {
				// should be unreachable
				panic("bufio: tried to rewind past start of buffer")
			}
			b.r--
			line = line[:len(line)-1]
		}
		return line, true, nil
	}

	if len(line) == 0 {
		if err != nil {
			line = nil

        }
      }
    ```

### Timeouts ([.kt][ConfigureTimeoutsKotlin], [.java][ConfigureTimeoutsJava])

Use timeouts to fail a call when its peer is unreachable. Network partitions can be due to client connectivity problems, server availability problems, or anything between. OkHttp supports connect, write, read, and full call timeouts.

=== ":material-language-kotlin: Kotlin"

  @Test
  fun tlsTimeoutsNotRetried() {
    enableTls()
    server.enqueue(MockResponse.Builder().onResponseStart(Stall).build())
    server.enqueue(MockResponse(body = "unreachable!"))
    client =
      client
        .newBuilder()
        .readTimeout(Duration.ofMillis(100))
        .build()
    val request = Request.Builder().url(server.url("/")).build()