}
        if (httpClient != null) {
            try {
                httpClient.close();
                if (logger.isDebugEnabled()) {
                    logger.debug("HTTP client closed successfully");
                }
            } catch (final IOException e) {
                logger.warn("Failed to close HTTP client", e);
            }
            httpClient = null;

        out.append(lines.next()).append(lineSeparator);
      }
    }
  }

  /**
   * Writes all the text from the given {@link Readable} (such as a {@link Reader}) to this sink.
   * Does not close {@code readable} if it is {@code Closeable}.
   *
   * @return the number of characters written
   * @throws IOException if an I/O error occurs while reading from {@code readable} or writing to
   *     this sink
   */

        lenient().when(mockConfig.isWitnessServiceDiscovery()).thenReturn(true);
    }

    @AfterEach
    void tearDown() {
        if (mockService != null) {
            mockService.close();
        }
    }

    @Test
    void testMockServiceLifecycle() throws Exception {
        assertNotNull(mockService.getAddress());
        assertTrue(mockService.getPort() > 0);

    class SamrCloseHandleTests {

        @Test
        @DisplayName("Should construct with correct opnum")
        void testConstructorAndOpnum() {
            // When: Creating close handle message
            samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // Then: Should have correct opnum and handle
            assertEquals(0x01, message.getOpnum());

    Proxy(
      Proxy.Type.SOCKS,
      InetSocketAddress.createUnresolved("localhost", serverSocket!!.localPort),
    )

  fun connectionCount(): Int = connectionCount.get()

  fun shutdown() {
    serverSocket!!.close()
    executor.shutdown()
    if (!executor.awaitTermination(5, TimeUnit.SECONDS)) {
      throw IOException("Gave up waiting for executor to shut down")
    }
  }

  private fun service(from: Socket) {

    File tempFile = createTempFile();
    PrintWriter writer = new PrintWriter(tempFile, "UTF-8");
    writer.println("rud a chur ar an méar fhada");
    writer.close();

    // First check that we can't find it without setting the context loader.
    // This is a sanity check that the test doesn't spuriously pass because
    // the resource is visible to the system class loader.

        ChannelInfo channel = new ChannelInfo("failover-test", mockTransport, nic, nic);
        channel.setState(ChannelState.ESTABLISHED);

        // Simulate failure
        IOException failure = new IOException("Connection lost");
        failover.handleFailure(channel, failure);

        // Verify channel state changed
        assertFalse(channel.isHealthy());
        assertEquals(ChannelState.FAILED, channel.getState());
    }

{* ../../docs_src/websockets_/tutorial003_py310.py hl[79:81] *}

To try it out:

* Open the app with several browser tabs.
* Write messages from them.
* Then close one of the tabs.

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

```
Client #1596980209979 left the chat
```

/// tip

}

func getMountMap() (map[string]string, error) {
	result := make(map[string]string)

	mountInfo, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return nil, err
	}
	defer mountInfo.Close()

	scanner := bufio.NewScanner(mountInfo)
	for scanner.Scan() {
		s := strings.Split(scanner.Text(), " ")
		if len(s) != 11 {
			return nil, errors.New("unsupported /proc/self/mountinfo format")
		}

     */
    public void removeChannel(ChannelInfo channel) {
        channels.remove(channel.getChannelId());
        try {
            if (channel.getTransport() != null) {
                channel.getTransport().close();
            }
        } catch (Exception e) {
            log.debug("Error disconnecting removed channel", e);
        }
    }

    /**
     * Establish a replacement channel
     */