Examples with UnknownHostException java.net.UnknownHostException used on opensource projects

Example 51 with UnknownHostException

use of java.net.UnknownHostException in project openhab1-addons by openhab.

the class TcpIOStream method open.

@Override
public boolean open() {
    if (m_host == null || m_port < 0) {
        logger.error("tcp connection to hub not properly configured!");
        return (false);
    }
    try {
        m_socket = new Socket(m_host, m_port);
        m_in = m_socket.getInputStream();
        m_out = m_socket.getOutputStream();
    } catch (UnknownHostException e) {
        logger.error("unknown host name: {}", m_host, e);
        return (false);
    } catch (IOException e) {
        logger.error("cannot open connection to {} port {}: ", m_host, m_port, e);
        return (false);
    }
    return true;
}

Example 52 with UnknownHostException

use of java.net.UnknownHostException in project openhab1-addons by openhab.

the class NtpBinding method getTime.

/**
     * 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();
}

Example 53 with UnknownHostException

use of java.net.UnknownHostException in project openhab1-addons by openhab.

the class KNXConnection method connectByIp.

private static KNXNetworkLink connectByIp(int ipConnectionType, String localIp, String ip, int port) throws KNXException, UnknownHostException, InterruptedException {
    InetSocketAddress localEndPoint = null;
    if (StringUtils.isNotBlank(localIp)) {
        localEndPoint = new InetSocketAddress(localIp, 0);
    } else {
        try {
            InetAddress localHost = InetAddress.getLocalHost();
            localEndPoint = new InetSocketAddress(localHost, 0);
        } catch (UnknownHostException uhe) {
            sLogger.warn("Couldn't find an IP address for this host. Please check the .hosts configuration or use the 'localIp' parameter to configure a valid IP address.");
        }
    }
    return new KNXNetworkLinkIP(ipConnectionType, localEndPoint, new InetSocketAddress(ip, port), sUseNAT, new TPSettings(new IndividualAddress(sLocalSourceAddr), true));
}

Example 54 with UnknownHostException

use of java.net.UnknownHostException in project openhab1-addons by openhab.

the class IRtransGenericBindingProvider method getInetSocketAddresses.

/**
     * {@inheritDoc}
     */
@Override
public List<InetSocketAddress> getInetSocketAddresses(String itemName) {
    List<InetSocketAddress> theList = new ArrayList<InetSocketAddress>();
    for (Command command : getAllCommands(itemName)) {
        InetSocketAddress anAddress = null;
        try {
            anAddress = new InetSocketAddress(InetAddress.getByName(getHost(itemName, command)), getPort(itemName, command));
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        theList.add(anAddress);
    }
    return theList;
}

Example 55 with UnknownHostException

use of java.net.UnknownHostException in project openhab1-addons by openhab.

the class MaxCubeBinding method execute.

/**
     * {@inheritDoc}
     */
@Override
public synchronized void execute() {
    if (ip == null) {
        logger.debug("Update prior to completion of interface IP configuration");
        return;
    }
    try {
        String raw = null;
        if (maxRequestsPerConnection > 0 && requestCount >= maxRequestsPerConnection) {
            logger.debug("maxRequestsPerConnection reached, reconnecting.");
            socket.close();
            this.socketConnect();
        }
        if (socket == null) {
            this.socketConnect();
        } else {
            /*
                 * if the connection is already open (this happens in exclusive mode), just send a "l:\r\n" to get the
                 * latest live informations
                 * note that "L:\r\n" or "l:\n" would not work.
                 */
            logger.debug("Sending state request #" + this.requestCount + " to Maxcube");
            writer.write("l:" + '\r' + '\n');
            writer.flush();
            requestCount++;
        }
        boolean cont = true;
        while (cont) {
            raw = reader.readLine();
            if (raw == null) {
                cont = false;
                continue;
            }
            Message message = null;
            try {
                this.messageProcessor.addReceivedLine(raw);
                if (this.messageProcessor.isMessageAvailable()) {
                    message = this.messageProcessor.pull();
                } else {
                    continue;
                }
                message.debug(logger);
                if (message != null) {
                    message.debug(logger);
                    if (message.getType() == MessageType.M) {
                        M_Message msg = (M_Message) message;
                        for (DeviceInformation di : msg.devices) {
                            Configuration c = null;
                            for (Configuration conf : configurations) {
                                if (conf.getSerialNumber().equalsIgnoreCase(di.getSerialNumber())) {
                                    c = conf;
                                    break;
                                }
                            }
                            if (c != null) {
                                configurations.remove(c);
                            }
                            c = Configuration.create(di);
                            configurations.add(c);
                            c.setRoomId(di.getRoomId());
                        }
                    } else if (message.getType() == MessageType.C) {
                        Configuration c = null;
                        for (Configuration conf : configurations) {
                            if (conf.getSerialNumber().equalsIgnoreCase(((C_Message) message).getSerialNumber())) {
                                c = conf;
                                break;
                            }
                        }
                        if (c == null) {
                            configurations.add(Configuration.create(message));
                        } else {
                            c.setValues((C_Message) message);
                        }
                    } else if (message.getType() == MessageType.S) {
                        sMessageProcessing((S_Message) message);
                        cont = false;
                    } else if (message.getType() == MessageType.L) {
                        ((L_Message) message).updateDevices(devices, configurations);
                        logger.debug("{} devices found.", devices.size());
                        // the L message is the last one, while the reader
                        // would hang trying to read a new line and
                        // eventually the
                        // cube will fail to establish
                        // new connections for some time
                        cont = false;
                    }
                }
            } catch (IncorrectMultilineIndexException ex) {
                logger.info("Incorrect MAX!Cube multiline message detected. Stopping processing and continue with next Line.");
                this.messageProcessor.reset();
            } catch (NoMessageAvailableException ex) {
                logger.info("Could not process MAX!Cube message. Stopping processing and continue with next Line.");
                this.messageProcessor.reset();
            } catch (IncompleteMessageException ex) {
                logger.info("Error while parsing MAX!Cube multiline message. Stopping processing, and continue with next Line.");
                this.messageProcessor.reset();
            } catch (UnprocessableMessageException ex) {
                logger.info("Error while parsing MAX!Cube message. Stopping processing, and continue with next Line.");
                this.messageProcessor.reset();
            } catch (UnsupportedMessageTypeException ex) {
                logger.info("Unsupported MAX!Cube message detected. Ignoring and continue with next Line.");
                this.messageProcessor.reset();
            } catch (MessageIsWaitingException ex) {
                logger.info("There was an unhandled message waiting. Ignoring and continue with next Line.");
                this.messageProcessor.reset();
            } catch (Exception e) {
                logger.info("Failed to process message received by MAX! protocol.");
                logger.debug(Utils.getStackTrace(e));
                this.messageProcessor.reset();
            }
        }
        if (!exclusive) {
            socketClose();
        }
        for (MaxCubeBindingProvider provider : providers) {
            for (String itemName : provider.getItemNames()) {
                String serialNumber = provider.getSerialNumber(itemName);
                Device device = findDevice(serialNumber, devices);
                if (device == null) {
                    logger.info("Cannot find MAX!cube device with serial number '{}'", serialNumber);
                    logAvailableMaxDevices();
                    continue;
                }
                // all devices have a battery state, so this is type-independent
                if (provider.getBindingType(itemName) == BindingType.BATTERY) {
                    if (device.battery().isChargeUpdated()) {
                        eventPublisher.postUpdate(itemName, device.battery().getCharge());
                    }
                } else if (provider.getBindingType(itemName) == BindingType.CONNECTION_ERROR) {
                    if (device.isErrorUpdated()) {
                        OnOffType connectionError = device.isError() ? OnOffType.ON : OnOffType.OFF;
                        eventPublisher.postUpdate(itemName, connectionError);
                    }
                } else {
                    switch(device.getType()) {
                        case HeatingThermostatPlus:
                        case HeatingThermostat:
                            if (provider.getBindingType(itemName) == BindingType.VALVE && ((HeatingThermostat) device).isValvePositionUpdated()) {
                                eventPublisher.postUpdate(itemName, ((HeatingThermostat) device).getValvePosition());
                                break;
                            }
                        // omitted break, fall through
                        case // and also HeatingThermostat
                        WallMountedThermostat:
                            if (provider.getBindingType(itemName) == BindingType.MODE && ((HeatingThermostat) device).isModeUpdated()) {
                                eventPublisher.postUpdate(itemName, ((HeatingThermostat) device).getModeString());
                            } else if (provider.getBindingType(itemName) == BindingType.ACTUAL && ((HeatingThermostat) device).isTemperatureActualUpdated()) {
                                eventPublisher.postUpdate(itemName, ((HeatingThermostat) device).getTemperatureActual());
                            } else if (((HeatingThermostat) device).isTemperatureSetpointUpdated() && provider.getBindingType(itemName) == null) {
                                eventPublisher.postUpdate(itemName, ((HeatingThermostat) device).getTemperatureSetpoint());
                            }
                            break;
                        case ShutterContact:
                            if (((ShutterContact) device).isShutterStateUpdated()) {
                                eventPublisher.postUpdate(itemName, ((ShutterContact) device).getShutterState());
                            }
                            break;
                        default:
                    }
                }
            }
        }
    } catch (UnknownHostException e) {
        logger.info("Host error occurred while connecting to MAX! Cube lan gateway '{}': {}", ip, e.getMessage());
        socketClose();
    } catch (IOException e) {
        logger.info("IO error occurred while connecting to MAX! Cube lan gateway '{}': {}", ip, e.getMessage());
        // reconnect on next execution
        socketClose();
    } catch (Exception e) {
        logger.info("Error occurred while connecting to MAX! Cube lan gateway '{}': {}", ip, e.getMessage());
        logger.info(Utils.getStackTrace(e));
        // reconnect on next execution
        socketClose();
    }
}