java.net.UnknownHostException Java Examples

private RemotingCommand consumeMessageDirectly(ChannelHandlerContext ctx, RemotingCommand request) throws RemotingCommandException {
    final ConsumeMessageDirectlyResultRequestHeader requestHeader = (ConsumeMessageDirectlyResultRequestHeader)request
        .decodeCommandCustomHeader(ConsumeMessageDirectlyResultRequestHeader.class);

    request.getExtFields().put("brokerName", this.brokerController.getBrokerConfig().getBrokerName());
    SelectMappedBufferResult selectMappedBufferResult = null;
    try {
        MessageId messageId = MessageDecoder.decodeMessageId(requestHeader.getMsgId());
        selectMappedBufferResult = this.brokerController.getMessageStore().selectOneMessageByOffset(messageId.getOffset());

        byte[] body = new byte[selectMappedBufferResult.getSize()];
        selectMappedBufferResult.getByteBuffer().get(body);
        request.setBody(body);
    } catch (UnknownHostException e) {
    } finally {
        if (selectMappedBufferResult != null) {
            selectMappedBufferResult.release();
        }
    }

    return this.callConsumer(RequestCode.CONSUME_MESSAGE_DIRECTLY, request, requestHeader.getConsumerGroup(),
        requestHeader.getClientId());
}
 

/**
 * @see org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket,
 *      java.lang.String, int, java.net.InetAddress, int,
 *      org.apache.http.params.HttpParams)
 */
public Socket connectSocket(Socket sock, String host, int port,
		InetAddress localAddress, int localPort, HttpParams params)
		throws IOException, UnknownHostException, ConnectTimeoutException {
	int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
	int soTimeout = HttpConnectionParams.getSoTimeout(params);

	InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
	SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

	if ((localAddress != null) || (localPort > 0)) {
		// we need to bind explicitly
		if (localPort < 0) {
			localPort = 0; // indicates "any"
		}
		InetSocketAddress isa = new InetSocketAddress(localAddress,
				localPort);
		sslsock.bind(isa);
	}

	sslsock.connect(remoteAddress, connTimeout);
	sslsock.setSoTimeout(soTimeout);
	return sslsock;
}
 

@GetMapping(value="/getHostInfo",produces=MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public String getHostInfo(HttpServletRequest request,
						  HttpServletResponse response){
	JSONObject jo = new JSONObject();
	String path = request.getContextPath();
	String basePath = null;
	try {
		InetAddress addr = InetAddress.getLocalHost();
		basePath = request.getScheme()+"://"+addr.getHostAddress()+":"+request.getServerPort()+path+"/";
	} catch (UnknownHostException e) {
		basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
	} 
	jo.put("host", basePath);
	return jo.toString();
}
 

private MpdMonitor() throws UnknownHostException, MPDConnectionException
{
	Configuration config = Play.application().configuration();

	String hostname = config.getString("mpd.hostname");
	int port = config.getInt("mpd.port");
	String password = config.getString("mpd.password");
	int timeout = config.getInt("mpd.timeout", 10) * 1000;
	
	Logger.info("Connecting to MPD");
	
	mpd = new MPD(hostname, port, password, timeout);
	monitor = new MPDStandAloneMonitor(mpd, 1000);
	
	thread = new Thread(monitor);
	thread.start();
}
 

/**
 * Utility for test method.
 */
private OspfInterfaceImpl createOspfInterface1() throws UnknownHostException {
    ospfInterface = new OspfInterfaceImpl();
    OspfAreaImpl ospfArea = new OspfAreaImpl();
    OspfInterfaceChannelHandler ospfInterfaceChannelHandler = EasyMock.createMock(
            OspfInterfaceChannelHandler.class);
    ospfNbr = new OspfNbrImpl(ospfArea, ospfInterface, ip4Address5,
                              ip4Address6, 2, topologyForDeviceAndLink);
    ospfNbr.setState(OspfNeighborState.FULL);
    ospfNbr.setNeighborId(ip4Address7);
    ospfInterface = new OspfInterfaceImpl();
    ospfInterface.setIpAddress(ip4Address5);
    ospfInterface.setIpNetworkMask(subnetAddress);
    ospfInterface.setBdr(ip4Address4);
    ospfInterface.setDr(ip4Address4);
    ospfInterface.setHelloIntervalTime(20);
    ospfInterface.setInterfaceType(2);
    ospfInterface.setReTransmitInterval(2000);
    ospfInterface.setMtu(6500);
    ospfInterface.setRouterDeadIntervalTime(1000);
    ospfInterface.setRouterPriority(1);
    ospfInterface.setInterfaceType(1);
    ospfInterface.addNeighbouringRouter(ospfNbr);
    return ospfInterface;
}
 

public void start() throws TTransportException, UnknownHostException {
    InetAddress inetAddress = InetAddress.getByName(hostName);

    TSSLTransportFactory.TSSLTransportParameters params =
            new TSSLTransportFactory.TSSLTransportParameters();
    params.setKeyStore(keyStore, keyStorePassword);

    TServerSocket serverTransport;

    serverTransport = TSSLTransportFactory.getServerSocket(port, clientTimeout, inetAddress, params);


    AuthenticatorService.Processor<AuthenticatorServiceImpl> processor =
            new AuthenticatorService.Processor<AuthenticatorServiceImpl>(
                    new AuthenticatorServiceImpl(thriftAuthenticatorService));
    authenticationServer = new TThreadPoolServer(
            new TThreadPoolServer.Args(serverTransport).processor(processor));
    Thread thread = new Thread(new ServerRunnable(authenticationServer));
    if (log.isDebugEnabled()) {
        log.debug("Thrift Authentication Service started at ssl://" + hostName + ":" + port);
    }
    thread.start();
}
 

@Override
public List<InetSocketAddress> getInetSocketAddresses(String itemName) {
    List<InetSocketAddress> theList = new ArrayList<InetSocketAddress>();
    ProtocolBindingConfig config = (ProtocolBindingConfig) bindingConfigs.get(itemName);
    if (config != null) {
        for (Command command : config.keySet()) {
            InetSocketAddress anAddress = null;
            try {
                anAddress = new InetSocketAddress(InetAddress.getByName(config.get(command).getHost()),
                        Integer.parseInt(config.get(command).getPort()));
            } catch (UnknownHostException e) {
                logger.warn("Could not resolve the hostname {} for item {}", config.get(command).getHost(),
                        itemName);
            }
            theList.add(anAddress);
        }
    }
    return theList;
}
 

/**
 * This method handles a connection error that was caused while connecting the gateway to the backend.
 *
 * @param error the connection error to be handled
 * @return a new ConnectorException
 */
public static ConnectorException handleConnectionError(Throwable error) {
    ConnectorException ce = null;
    if (error instanceof UnknownHostException || error instanceof ConnectException || error instanceof NoRouteToHostException) {
        ce = new ConnectorException("Unable to connect to backend", error); //$NON-NLS-1$
        ce.setStatusCode(502); // BAD GATEWAY
    } else if (error instanceof InterruptedIOException || error instanceof java.util.concurrent.TimeoutException) {
        ce = new ConnectorException("Connection to backend terminated" + error.getMessage(), error); //$NON-NLS-1$
        ce.setStatusCode(504); // GATEWAY TIMEOUT

    }
    if (ce != null) {
        return ce;
    } else {
        return new ConnectorException(error.getMessage(), error);
    }
}
 

/**
 * Parses a single String as an address and port and converts it to an
 * <code>InetSocketAddress</code>.
 * 
 * @param address
 *            the address to convert.
 * @param defaultPort
 *            the default port to use if one is not.
 * @return the parsed <code>InetSocketAddress</code>.
 * @throws UnknownHostException
 *             if the address is in an invalid format or if the host cannot
 *             be found.
 */
public static InetSocketAddress parseAddress(String address, int defaultPort) throws UnknownHostException {
	String[] addressSplit = address.split(":");
	if (addressSplit.length == 1 || addressSplit.length == 2) {
		InetAddress inetAddress = InetAddress.getByName(!addressSplit[0].startsWith("/") ? addressSplit[0]
				: addressSplit[0].substring(1, addressSplit[0].length()));
		int port = (addressSplit.length == 2 ? parseIntPassive(addressSplit[1]) : defaultPort);
		if (port >= 0x0000 && port <= 0xFFFF) {
			return new InetSocketAddress(inetAddress, port);
		} else {
			throw new UnknownHostException("Port number must be between 0-65535");
		}
	} else {
		throw new UnknownHostException("Format must follow address:port");
	}
}
 

public InetAddress[] getInetAddresses() {

        if (addresses == null || addresses.length == 0)
            return null;

        ArrayList<InetAddress> ipAddrs = new ArrayList<>(addresses.length);

        for (int i = 0; i < addresses.length; i++) {
            try {
                if ((addresses[i].addrType == Krb5.ADDRTYPE_INET) ||
                    (addresses[i].addrType == Krb5.ADDRTYPE_INET6)) {
                    ipAddrs.add(addresses[i].getInetAddress());
                }
            } catch (java.net.UnknownHostException e) {
                // Should not happen since IP address given
                return null;
            }
        }

        InetAddress[] retVal = new InetAddress[ipAddrs.size()];
        return ipAddrs.toArray(retVal);

    }
 

/**
 * Applies this function to the given argument.
 *
 * @param observable the function argument
 * @return the function result
 */
@Override
public Observable<?> apply(Observable<? extends Throwable> observable) {
    return observable.flatMap(new Function<Throwable, ObservableSource<?>>() {
        @Override
        public ObservableSource<?> apply(Throwable throwable) {
            //未连接网络直接返回异常
            if (!NetworkUtil.isConnected(mContext)) {
                return Observable.error(throwable);
            }
            //仅仅对连接失败相关错误进行重试
            if (throwable instanceof ConnectException
                    || throwable instanceof UnknownHostException
                    || throwable instanceof SocketTimeoutException
                    || throwable instanceof SocketException
                    || throwable instanceof TimeoutException) {
                if (++mRetryCount <= mRetryMaxTime) {
                    LoggerManager.e(TAG, "网络请求错误,将在 " + mRetryDelay + " ms后进行重试, 重试次数 " + mRetryCount + ";throwable:" + throwable);
                    return Observable.timer(mRetryDelay, TimeUnit.MILLISECONDS);
                }
            }
            return Observable.error(throwable);
        }
    });
}
 

@Test
public void testConnectDisconnect() throws UnknownHostException {
	NetworkManager nodeA = new NetworkManager(new H2HDummyEncryption(), serializer, new TestFileConfiguration());
	NetworkManager nodeB = new NetworkManager(new H2HDummyEncryption(), serializer, new TestFileConfiguration());

	INetworkConfiguration netConfigA = NetworkConfiguration.createInitial("nodeA");
	INetworkConfiguration netConfigB = NetworkConfiguration.create("nodeB", InetAddress.getLocalHost());
	try {
		nodeA.connect(netConfigA);
		nodeB.connect(netConfigB);

		assertTrue(nodeB.disconnect(false));
		assertTrue(nodeB.connect(netConfigB));
	} finally {
		nodeA.disconnect(false);
		nodeB.disconnect(false);
	}
}
 

private void execute(final Event event) {
    final String fileContent = (String) event.getProperty(FILE_CONTENT);
    Map<String, String> content = new HashMap<>();
    content.put("bdmXml", fileContent);
    try {
        new ClientResource(String.format("http://%s:%s/bdm",
                InetAddress.getByName(null).getHostAddress(),
                InstanceScope.INSTANCE.getNode(BonitaStudioPreferencesPlugin.PLUGIN_ID)
                        .get(BonitaPreferenceConstants.DATA_REPOSITORY_PORT, "-1")))
                                .post(new JacksonRepresentation<Object>(content));
        BonitaStudioLog.info("BDM has been publish into Data Repository service", UIDesignerPlugin.PLUGIN_ID);
    } catch (ResourceException | UnknownHostException e) {
        BonitaStudioLog.error("An error occured while publishing the BDM into Data Repository service", e);
    }
    
}
 

@Override
public InetAddress[] getAllByName(String host) throws UnknownHostException {
    // Always bypass Private DNS.
    final List<InetAddress> addrs = Arrays.asList(
            ResolvUtil.blockingResolveAllLocally(this, host));

    // Ensure the address family of the first address is tried first.
    LinkedHashMap<Class, InetAddress> addressByFamily = new LinkedHashMap<>();
    addressByFamily.put(addrs.get(0).getClass(), addrs.get(0));
    Collections.shuffle(addrs);

    for (InetAddress addr : addrs) {
        addressByFamily.put(addr.getClass(), addr);
    }

    return addressByFamily.values().toArray(new InetAddress[addressByFamily.size()]);
}
 

public static Socket createSocket(final SocketTask task, int timeout)
 throws IOException, UnknownHostException, ConnectTimeoutException
{
        try {
            TimeoutController.execute(task, timeout);
        } catch (TimeoutController.TimeoutException e) {
            throw new ConnectTimeoutException(
                "The host did not accept the connection within timeout of " 
                + timeout + " ms");
        }
        Socket socket = task.getSocket();
        if (task.exception != null) {
            throw task.exception;
        }
        return socket;
}
 

/** Resets {@link #nextInetSocketAddress} to the first option. */
private void resetNextInetSocketAddress(Proxy proxy) throws UnknownHostException {
  socketAddresses = null; // Clear the addresses. Necessary if getAllByName() below throws!

  String socketHost;
  if (proxy.type() == Proxy.Type.DIRECT) {
    socketHost = uri.getHost();
    socketPort = getEffectivePort(uri);
  } else {
    SocketAddress proxyAddress = proxy.address();
    if (!(proxyAddress instanceof InetSocketAddress)) {
      throw new IllegalArgumentException(
          "Proxy.address() is not an " + "InetSocketAddress: " + proxyAddress.getClass());
    }
    InetSocketAddress proxySocketAddress = (InetSocketAddress) proxyAddress;
    socketHost = proxySocketAddress.getHostName();
    socketPort = proxySocketAddress.getPort();
  }

  // Try each address for best behavior in mixed IPv4/IPv6 environments.
  socketAddresses = dns.getAllByName(socketHost);
  nextSocketAddressIndex = 0;
}
 

@Test
public void testBadSslConfiguration()
    throws UnknownHostException {
  Properties props = new Properties();
  props.setProperty(ElasticsearchWriterConfigurationKeys.ELASTICSEARCH_WRITER_INDEX_NAME, "test");
  props.setProperty(ElasticsearchWriterConfigurationKeys.ELASTICSEARCH_WRITER_INDEX_TYPE, "test");
  props.setProperty(ElasticsearchWriterConfigurationKeys.ELASTICSEARCH_WRITER_TYPEMAPPER_CLASS,
      AvroGenericRecordTypeMapper.class.getCanonicalName());
  props.setProperty(ElasticsearchWriterConfigurationKeys.ELASTICSEARCH_WRITER_ID_MAPPING_ENABLED, "true");
  props.setProperty(ElasticsearchWriterConfigurationKeys.ELASTICSEARCH_WRITER_SSL_ENABLED, "true");
  Config config = ConfigFactory.parseProperties(props);
  try {
    new ElasticsearchTransportClientWriter(config);
    Assert.fail("Writer should not be constructed");
  }
  catch (Exception e) {
  }
}
 

private void disconnect(Collection<DataTreeModification<Node>> changes) {
    for (DataTreeModification<Node> change : changes) {
        final InstanceIdentifier<Node> key = change.getRootPath().getRootIdentifier();
        final DataObjectModification<Node> mod = change.getRootNode();
        Node deleted = getRemoved(mod);
        if (deleted != null) {
            HwvtepGlobalAugmentation hgDeleted = deleted.augmentation(HwvtepGlobalAugmentation.class);
            if (hgDeleted != null) {
                try {
                    hcm.disconnect(hgDeleted);
                    hcm.stopConnectionReconciliationIfActive(key, hgDeleted);
                } catch (UnknownHostException e) {
                    LOG.warn("Failed to disconnect HWVTEP Node", e);
                }
            }
        }
    }
}
 

/**
 * Queries the given timeserver <code>hostname</code> and returns the time
 * in milliseconds.
 *
 * @param hostname the timeserver to query
 * @return the time in milliseconds or the current time of the system if an
 *         error occurs.
 */
protected static long getTime(String hostname) {

    try {
        NTPUDPClient timeClient = new NTPUDPClient();
        timeClient.setDefaultTimeout(NTP_TIMEOUT);
        InetAddress inetAddress = InetAddress.getByName(hostname);
        TimeInfo timeInfo = timeClient.getTime(inetAddress);

        return timeInfo.getReturnTime();
    } catch (UnknownHostException uhe) {
        logger.warn("the given hostname '{}' of the timeserver is unknown -> returning current sytem time instead",
                hostname);
    } catch (IOException ioe) {
        logger.warn("couldn't establish network connection [host '{}'] -> returning current sytem time instead",
                hostname);
    }

    return System.currentTimeMillis();
}
 

/**
 * 自定义 RedisTemplate 序列化器
 */
@Bean
public RedisTemplate<Object, Employee> empRedisTemplate(
        RedisConnectionFactory redisConnectionFactory)
        throws UnknownHostException {
    RedisTemplate<Object, Employee> template = new RedisTemplate<Object, Employee>();
    template.setConnectionFactory(redisConnectionFactory);
    Jackson2JsonRedisSerializer<Employee> ser = new Jackson2JsonRedisSerializer<Employee>(Employee.class);
    template.setDefaultSerializer(ser);
    return template;
}
 

public static void getPortParam() throws Exception {
    long startTime = LogTime.getLogTime();
    final PortBean portBean = new PortBean();
    portBean.setAddress(HttpModelHelper.getInstance().getAddress());
    final List<JSONObject> list = new ArrayList<>();
    try {

        PortScan.onAddress(Base.getUrlHost())
                .setPortsPrivileged()
                .setMethodTCP()
                .doScan(new PortScan.PortListener() {
                    @Override
                    public void onResult(PortBean.PortNetBean portNetBean) {
                        if (portNetBean.isConnected()) {
                            list.add(portNetBean.toJSONObject());
                        }
                    }


                    @Override
                    public void onFinished(ArrayList<Integer> openPorts) {
                        portBean.setStatus(BaseData.HTTP_SUCCESS);
                        portBean.setPortNetBeans(list);

                    }
                });
    } catch (UnknownHostException e) {
        portBean.setStatus(BaseData.HTTP_ERROR);
        e.printStackTrace();
    }
    portBean.setTotalTime(LogTime.getElapsedMillis(startTime));
    HttpLog.i("PortScan is end");
    Input.onSuccess(HttpType.PORT_SCAN, portBean.toJSONObject());

}
 

@Override
protected void performRuntime(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {

    PathAddress address = PathAddress.pathAddress(operation.get(OP_ADDR));
    String name = address.getLastElement().getValue();

    try {
        installBindingService(context, model, name);
    } catch (UnknownHostException e) {
        throw new OperationFailedException(e.toString());
    }

}
 

public InetAddress getInetAddress() throws UtilityException, UnknownHostException {
  byte[] address = new byte[4];
  address[0] = Utility.integerToOneByte(firstOctet);
  address[1] = Utility.integerToOneByte(secondOctet);
  address[2] = Utility.integerToOneByte(thirdOctet);
  address[3] = Utility.integerToOneByte(fourthOctet);
  return InetAddress.getByAddress(address);
}
 

@Test
public void testBasics() throws JsonProcessingException, JobException, UnknownHostException, SQLException {
    Assert.assertNotNull(cubeService.getConfig());
    Assert.assertNotNull(cubeService.getConfig());
    Assert.assertNotNull(cubeService.getDataModelManager());
    Assert.assertNotNull(QueryConnection.getConnection(ProjectInstance.DEFAULT_PROJECT_NAME));

    List<CubeInstance> cubes = cubeService.listAllCubes(null, null, null, true);
    Assert.assertNotNull(cubes);
    CubeInstance cube = cubes.get(0);
}
 

private Proxy getProxy(URI uri) throws UnknownHostException {
	IProxyData proxyData = getProxyData(uri);
	if (proxyData == null) {
		if (!isProxiesEnabled()) {
			return Proxy.NO_PROXY;
		}
		return null;
	}
	
	return getProxyFromProxyData(proxyData);

}
 

/**
 * Returns a list of virtual machine descriptors derived from an enumeration
 * of the process list.
 */
private List<VirtualMachineDescriptor> listJavaProcesses() {
    ArrayList<VirtualMachineDescriptor> list =
        new ArrayList<VirtualMachineDescriptor>();

    // Use localhost in the display name
    String host = "localhost";
    try {
        host = InetAddress.getLocalHost().getHostName();
    } catch (UnknownHostException uhe) {
        // ignore
    }

    // Enumerate all processes.
    // For those processes that have loaded a library named "jvm.dll"
    // then we attempt to attach. If we succeed then we have a 6.0+ VM.
    int processes[] = new int[1024];
    int count = enumProcesses(processes, processes.length);
    for (int i=0; i<count; i++) {
        if (isLibraryLoadedByProcess("jvm.dll", processes[i])) {
            String pid = Integer.toString(processes[i]);
            try {
                new WindowsVirtualMachine(this, pid).detach();

                // FIXME - for now we don't have an appropriate display
                // name so we use pid@hostname
                String name = pid + "@" + host;

                list.add(new HotSpotVirtualMachineDescriptor(this, pid, name));
            } catch (AttachNotSupportedException x) {
            } catch (IOException ioe) {
            }
        }
    }

    return list;
}
 

@Test
public void testMappedBypass() throws UnknownHostException {
	byte[] v4mapped = new byte[16];
	v4mapped[11] = (byte) 0xff;
	v4mapped[10] = (byte) 0xff;
			
	assertThat(InetAddress.getByAddress(v4mapped), IsInstanceOf.instanceOf(Inet4Address.class));
	assertThat(AddressUtils.fromBytesVerbatim(v4mapped), IsInstanceOf.instanceOf(Inet6Address.class));
	
}
 

public void sendIpMessageByCommandToTargetIp(int command,String targetIp){
    IpMessage ipMessage=new IpMessage();
    ipMessage.setCommand(command);
    try {
        new UdpThread.UdpSendTask(ipMessage.toProtocolString(),InetAddress.getByName(targetIp),SPUtil.getPortNumber(context),null).start();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
}
 

private String getIPAddressFromDomain(String domain) {
    try {
        InetAddress a = InetAddress.getByName(domain);
        return a.getHostAddress();
    } catch (UnknownHostException e) {
        LOGGER.error("Can not resolve " + domain + " really ip.");
    }
    return domain;
}
 

public ArchivedExecution build() throws UnknownHostException {
	return new ArchivedExecution(
		userAccumulators != null ? userAccumulators : new StringifiedAccumulatorResult[0],
		ioMetrics != null ? ioMetrics : new TestIOMetrics(),
		attemptId != null ? attemptId : new ExecutionAttemptID(),
		attemptNumber,
		state != null ? state : ExecutionState.FINISHED,
		failureCause != null ? failureCause : "(null)",
		assignedResourceLocation != null ? assignedResourceLocation : new TaskManagerLocation(new ResourceID("tm"), InetAddress.getLocalHost(), 1234),
		assignedAllocationID != null ? assignedAllocationID : new AllocationID(0L, 0L),
		parallelSubtaskIndex,
		stateTimestamps != null ? stateTimestamps : new long[]{1, 2, 3, 4, 5, 5, 5, 5}
	);
}