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

Example 26 with NoRouteToHostException

use of java.net.NoRouteToHostException in project opennms by OpenNMS.

the class CitrixMonitor method poll.

// read()
/**
     * {@inheritDoc}
     *
     * Poll the specified address for Citrix service availability.
     *
     * During the poll an attempt is made to connect on the specified port (by
     * default port 1494). If the connection request is successful, the banner
     * line generated by the interface is parsed and if the extracted return
     * code indicates that we are talking to an Citrix server ('ICA' appears in
     * the response) we set the service status to SERVICE_AVAILABLE and return.
     */
@Override
public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    // Get the category logger
    //
    // get the parameters
    //
    TimeoutTracker timeoutTracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);
    int port = ParameterMap.getKeyedInteger(parameters, "port", DEFAULT_PORT);
    // Extract the address
    //
    InetAddress ipv4Addr = svc.getAddress();
    String host = InetAddressUtils.str(ipv4Addr);
    LOG.debug("CitrixMonitor.poll: Polling interface: {} {}", host, timeoutTracker);
    PollStatus serviceStatus = PollStatus.unavailable();
    for (timeoutTracker.reset(); timeoutTracker.shouldRetry() && !serviceStatus.isAvailable(); timeoutTracker.nextAttempt()) {
        Socket socket = null;
        try {
            timeoutTracker.startAttempt();
            socket = new Socket();
            socket.connect(new InetSocketAddress(ipv4Addr, port), timeoutTracker.getConnectionTimeout());
            socket.setSoTimeout(timeoutTracker.getSoTimeout());
            LOG.debug("CitrixMonitor: connected to host: {} on port: {}", host, port);
            // We're connected, so upgrade status to unresponsive
            // Allocate a line reader
            //
            BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            StringBuffer buffer = new StringBuffer();
            //
            while (!serviceStatus.isAvailable()) {
                buffer.append((char) reader.read());
                if (buffer.toString().indexOf("ICA") > -1) {
                    serviceStatus = PollStatus.available(timeoutTracker.elapsedTimeInMillis());
                } else {
                    serviceStatus = PollStatus.unavailable("magic cookie 'ICA' missing from service greeting.");
                }
            }
        } catch (ConnectException e) {
            // Connection refused!! Continue to retry.
            String reason = "Connection refused by host " + host;
            LOG.debug(reason, e);
            serviceStatus = PollStatus.unavailable(reason);
        } catch (NoRouteToHostException e) {
            // No route to host!! Try retries anyway in case strict timeouts are enabled
            String reason = "Unable to test host " + host + ", no route available";
            LOG.debug(reason, e);
            serviceStatus = PollStatus.unavailable(reason);
        } catch (InterruptedIOException e) {
            String reason = "did not connect to host " + host + " within timeout: " + timeoutTracker;
            LOG.debug(reason);
            serviceStatus = PollStatus.unavailable(reason);
        } catch (IOException e) {
            String reason = "Error communicating with host " + host;
            LOG.debug(reason, e);
            serviceStatus = PollStatus.unavailable(reason);
        } catch (Throwable t) {
            String reason = "Undeclared throwable exception caught contacting host " + host;
            LOG.debug(reason, t);
            serviceStatus = PollStatus.unavailable(reason);
        } finally {
            try {
                if (socket != null) {
                    socket.close();
                    socket = null;
                }
            } catch (IOException e) {
            }
        }
    }
    //
    return serviceStatus;
}

Example 27 with NoRouteToHostException

use of java.net.NoRouteToHostException in project opennms by OpenNMS.

the class DominoIIOPMonitor method poll.

// read()
/**
     * {@inheritDoc}
     *
     * Poll the specified address for service availability.
     *
     * During the poll an attempt is made to connect on the specified port. If
     * the connection request is successful, the banner line generated by the
     * interface is parsed and if the banner text indicates that we are talking
     * to Provided that the interface's response is valid we set the service
     * status to SERVICE_AVAILABLE and return.
     */
@Override
public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    //
    // Process parameters
    //
    TimeoutTracker tracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);
    int IORport = ParameterMap.getKeyedInteger(parameters, "ior-port", DEFAULT_IORPORT);
    // Port
    //
    int port = ParameterMap.getKeyedInteger(parameters, "port", DEFAULT_PORT);
    // Get the address instance.
    //
    InetAddress ipAddr = svc.getAddress();
    final String hostAddress = InetAddressUtils.str(ipAddr);
    LOG.debug("poll: address = {}, port = {}, {}", hostAddress, port, tracker);
    //
    try {
        retrieveIORText(hostAddress, IORport);
    } catch (Throwable e) {
        String reason = "failed to get the corba IOR from " + ipAddr;
        LOG.debug(reason, e);
        return PollStatus.unavailable(reason);
    }
    PollStatus status = null;
    for (tracker.reset(); tracker.shouldRetry() && !status.isAvailable(); tracker.nextAttempt()) {
        Socket socket = null;
        try {
            //
            // create a connected socket
            //
            tracker.startAttempt();
            socket = new Socket();
            socket.connect(new InetSocketAddress(ipAddr, port), tracker.getConnectionTimeout());
            socket.setSoTimeout(tracker.getSoTimeout());
            LOG.debug("DominoIIOPMonitor: connected to host: {} on port: {}", ipAddr, port);
            return PollStatus.up(tracker.elapsedTimeInMillis());
        } catch (NoRouteToHostException e) {
            String reason = " No route to host exception for address " + hostAddress;
            LOG.debug(reason, e);
            status = PollStatus.unavailable(reason);
        } catch (InterruptedIOException e) {
            String reason = "did not connect to host with " + tracker;
            LOG.debug(reason);
            status = PollStatus.unavailable(reason);
        } catch (ConnectException e) {
            String reason = "Connection exception for address: " + ipAddr + " : " + e.getMessage();
            LOG.debug(reason);
            status = PollStatus.unavailable(reason);
        } catch (IOException e) {
            String reason = "IOException while polling address: " + ipAddr + " : " + e.getMessage();
            LOG.debug(reason);
            status = PollStatus.unavailable(reason);
        } finally {
            try {
                // Close the socket
                if (socket != null)
                    socket.close();
            } catch (IOException e) {
                e.fillInStackTrace();
                LOG.debug("DominoIIOPMonitor: Error closing socket.", e);
            }
        }
    }
    //
    return status;
}

Example 28 with NoRouteToHostException

use of java.net.NoRouteToHostException in project opennms by OpenNMS.

the class NsclientManager method init.

/**
     * This method creates a new socket and attempts to connect to the remote
     * service. The input and output streams are created after the socket is
     * connected.
     *
     * @throws org.opennms.protocols.nsclient.NsclientException
     *             if the hostname is unknown if the connection is refused if
     *             there is no route to the host if the host did not respond
     *             if there was an unexpected IO error. The thrown exception
     *             contains the causing exception.
     */
public void init() throws NsclientException {
    try {
        // set up socket
        m_Socket = new Socket();
        m_Socket.connect(new InetSocketAddress(m_HostName, m_PortNumber), m_Timeout);
        m_Socket.setSoTimeout(m_Timeout);
        // get buffer streams for read/write.
        m_BufInStream = new BufferedInputStream(m_Socket.getInputStream());
        m_ByteArrayOutStream = new ByteArrayOutputStream();
    // handle exceptions.
    } catch (UnknownHostException e) {
        closeSocketAndThrow(new NsclientException("Unknown host: " + m_HostName, e));
    } catch (ConnectException e) {
        closeSocketAndThrow(new NsclientException("Connection refused to " + m_HostName + ":" + m_PortNumber, e));
    } catch (NoRouteToHostException e) {
        closeSocketAndThrow(new NsclientException("Unable to connect to host: " + m_HostName + ", no route to host.", e));
    } catch (InterruptedIOException e) {
        closeSocketAndThrow(new NsclientException("Unable to connect to host: " + m_HostName + ":" + m_PortNumber + ", exceeded timeout of " + m_Timeout, e));
    } catch (IOException e) {
        closeSocketAndThrow(new NsclientException("An unexpected I/O exception occured connecting to host: " + m_HostName + ":" + m_PortNumber, e));
    }
}

Example 29 with NoRouteToHostException

use of java.net.NoRouteToHostException in project opennms by OpenNMS.

the class JMXDetector method isServiceDetected.

public final boolean isServiceDetected(final InetAddress address, Map<String, String> runtimeAttributes) {
    final String ipAddr = InetAddressUtils.str(address);
    final int port = getPort();
    final int retries = getRetries();
    final int timeout = getTimeout();
    LOG.info("isServiceDetected: {}: Checking address: {} for capability on port {}", getServiceName(), ipAddr, port);
    for (int attempts = 0; attempts < retries; attempts++) {
        try (final JmxServerConnectionWrapper client = this.connect(address, port, timeout, runtimeAttributes)) {
            LOG.info("isServiceDetected: {}: Attempting to connect to address: {}, port: {}, attempt: #{}", getServiceName(), ipAddr, port, attempts);
            if (client.getMBeanServerConnection().getMBeanCount() <= 0) {
                return false;
            }
            if (m_object != null) {
                client.getMBeanServerConnection().getObjectInstance(new ObjectName(m_object));
            }
            return true;
        } catch (ConnectException e) {
            // Connection refused!! Continue to retry.
            LOG.info("isServiceDetected: {}: Unable to connect to address: {} port {}, attempt #{}", getServiceName(), ipAddr, port, attempts, e);
        } catch (NoRouteToHostException e) {
            // No Route to host!!!
            LOG.info("isServiceDetected: {}: No route to address {} was available", getServiceName(), ipAddr, e);
        } catch (final PortUnreachableException e) {
            // Port unreachable
            LOG.info("isServiceDetected: {}: Port unreachable while connecting to address {} port {} within timeout: {} attempt: {}", getServiceName(), ipAddr, port, timeout, attempts, e);
        } catch (InterruptedIOException e) {
            // Expected exception
            LOG.info("isServiceDetected: {}: Did not connect to address {} port {} within timeout: {} attempt: {}", getServiceName(), ipAddr, port, timeout, attempts, e);
        } catch (MalformedObjectNameException e) {
            LOG.info("isServiceDetected: {}: Object instance {} is not valid on address {} port {} within timeout: {} attempt: {}", getServiceName(), m_object, ipAddr, port, timeout, attempts, e);
        } catch (InstanceNotFoundException e) {
            LOG.info("isServiceDetected: {}: Object instance {} does not exists on address {} port {} within timeout: {} attempt: {}", getServiceName(), m_object, ipAddr, port, timeout, attempts, e);
        } catch (IOException e) {
            // NMS-8096: Because the JMX connections wrap lower-level exceptions in an IOException,
            // we need to unwrap the exceptions to provide INFO log messages about failures
            boolean loggedIt = false;
            // Unwrap exception
            Throwable cause = e.getCause();
            while (cause != null && loggedIt == false) {
                if (cause instanceof ConnectException) {
                    // Connection refused!! Continue to retry.
                    LOG.info("isServiceDetected: {}: Unable to connect to address: {} port {}, attempt #{}", getServiceName(), ipAddr, port, attempts, e);
                    loggedIt = true;
                } else if (cause instanceof NoRouteToHostException) {
                    // No Route to host!!!
                    LOG.info("isServiceDetected: {}: No route to address {} was available", getServiceName(), ipAddr, e);
                    loggedIt = true;
                } else if (cause instanceof PortUnreachableException) {
                    // Port unreachable
                    LOG.info("isServiceDetected: {}: Port unreachable while connecting to address {} port {} within timeout: {} attempt: {}", getServiceName(), ipAddr, port, timeout, attempts, e);
                    loggedIt = true;
                } else if (cause instanceof InterruptedIOException) {
                    // Expected exception
                    LOG.info("isServiceDetected: {}: Did not connect to address {} port {} within timeout: {} attempt: {}", getServiceName(), ipAddr, port, timeout, attempts, e);
                    loggedIt = true;
                } else if (cause instanceof NameNotFoundException) {
                    LOG.info("isServiceDetected: {}: Name {} not found on address {} port {} within timeout: {} attempt: {}", getServiceName(), m_object, ipAddr, port, timeout, attempts, e);
                    loggedIt = true;
                } else if (cause instanceof MalformedObjectNameException) {
                    LOG.info("isServiceDetected: {}: Object instance {} is not valid on address {} port {} within timeout: {} attempt: {}", getServiceName(), m_object, ipAddr, port, timeout, attempts, e);
                    loggedIt = true;
                } else if (cause instanceof InstanceNotFoundException) {
                    LOG.info("isServiceDetected: {}: Object instance {} does not exists on address {} port {} within timeout: {} attempt: {}", getServiceName(), m_object, ipAddr, port, timeout, attempts, e);
                    loggedIt = true;
                }
                cause = cause.getCause();
            }
            if (!loggedIt) {
                // If none of the causes are an expected type, log an error
                LOG.error("isServiceDetected: {}: An unexpected I/O exception occured contacting address {} port {}", getServiceName(), ipAddr, port, e);
            }
        } catch (Throwable t) {
            LOG.error("isServiceDetected: {}: Unexpected error trying to detect {} on address {} port {}", getServiceName(), getServiceName(), ipAddr, port, t);
        }
    }
    return false;
}

Example 30 with NoRouteToHostException

use of java.net.NoRouteToHostException in project android_frameworks_base by DirtyUnicorns.

the class MediaHTTPConnection method seekTo.

private void seekTo(long offset) throws IOException {
    teardownConnection();
    try {
        int response;
        int redirectCount = 0;
        URL url = mURL;
        // do not use any proxy for localhost (127.0.0.1)
        boolean noProxy = isLocalHost(url);
        while (true) {
            if (noProxy) {
                mConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);
            } else {
                mConnection = (HttpURLConnection) url.openConnection();
            }
            mConnection.setConnectTimeout(CONNECT_TIMEOUT_MS);
            // handle redirects ourselves if we do not allow cross-domain redirect
            mConnection.setInstanceFollowRedirects(mAllowCrossDomainRedirect);
            if (mHeaders != null) {
                for (Map.Entry<String, String> entry : mHeaders.entrySet()) {
                    mConnection.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            if (offset > 0) {
                mConnection.setRequestProperty("Range", "bytes=" + offset + "-");
            }
            response = mConnection.getResponseCode();
            if (response != HttpURLConnection.HTTP_MULT_CHOICE && response != HttpURLConnection.HTTP_MOVED_PERM && response != HttpURLConnection.HTTP_MOVED_TEMP && response != HttpURLConnection.HTTP_SEE_OTHER && response != HTTP_TEMP_REDIRECT) {
                // not a redirect, or redirect handled by HttpURLConnection
                break;
            }
            if (++redirectCount > MAX_REDIRECTS) {
                throw new NoRouteToHostException("Too many redirects: " + redirectCount);
            }
            String method = mConnection.getRequestMethod();
            if (response == HTTP_TEMP_REDIRECT && !method.equals("GET") && !method.equals("HEAD")) {
                // automatically redirect the request"
                throw new NoRouteToHostException("Invalid redirect");
            }
            String location = mConnection.getHeaderField("Location");
            if (location == null) {
                throw new NoRouteToHostException("Invalid redirect");
            }
            url = new URL(mURL, /* TRICKY: don't use url! */
            location);
            if (!url.getProtocol().equals("https") && !url.getProtocol().equals("http")) {
                throw new NoRouteToHostException("Unsupported protocol redirect");
            }
            boolean sameProtocol = mURL.getProtocol().equals(url.getProtocol());
            if (!mAllowCrossProtocolRedirect && !sameProtocol) {
                throw new NoRouteToHostException("Cross-protocol redirects are disallowed");
            }
            boolean sameHost = mURL.getHost().equals(url.getHost());
            if (!mAllowCrossDomainRedirect && !sameHost) {
                throw new NoRouteToHostException("Cross-domain redirects are disallowed");
            }
            if (response != HTTP_TEMP_REDIRECT) {
                // update effective URL, unless it is a Temporary Redirect
                mURL = url;
            }
        }
        if (mAllowCrossDomainRedirect) {
            // remember the current, potentially redirected URL if redirects
            // were handled by HttpURLConnection
            mURL = mConnection.getURL();
        }
        if (response == HttpURLConnection.HTTP_PARTIAL) {
            // Partial content, we cannot just use getContentLength
            // because what we want is not just the length of the range
            // returned but the size of the full content if available.
            String contentRange = mConnection.getHeaderField("Content-Range");
            mTotalSize = -1;
            if (contentRange != null) {
                // format is "bytes xxx-yyy/zzz
                // where "zzz" is the total number of bytes of the
                // content or '*' if unknown.
                int lastSlashPos = contentRange.lastIndexOf('/');
                if (lastSlashPos >= 0) {
                    String total = contentRange.substring(lastSlashPos + 1);
                    try {
                        mTotalSize = Long.parseLong(total);
                    } catch (NumberFormatException e) {
                    }
                }
            }
        } else if (response != HttpURLConnection.HTTP_OK) {
            throw new IOException();
        } else {
            mTotalSize = mConnection.getContentLength();
        }
        if (offset > 0 && response != HttpURLConnection.HTTP_PARTIAL) {
            // data from the start of the content.
            throw new ProtocolException();
        }
        mInputStream = new BufferedInputStream(mConnection.getInputStream());
        mCurrentOffset = offset;
    } catch (IOException e) {
        mTotalSize = -1;
        mInputStream = null;
        mConnection = null;
        mCurrentOffset = -1;
        throw e;
    }
}