Example usage for java.net UnknownHostException UnknownHostException

Introduction

In this page you can find the example usage for java.net UnknownHostException UnknownHostException.

Prototype

public UnknownHostException(String message) 

Source Link

Document

Constructs a new UnknownHostException with the specified detail message.

Usage

From source file:org.magnum.dataup.VideoController.java

private static InetAddress getLocalHostLANAddress() throws UnknownHostException {
    try {//from  w ww.  j a  va 2  s.c  om
        InetAddress candidateAddress = null;
        // Iterate all NICs (network interface cards)...
        for (Enumeration ifaces = NetworkInterface.getNetworkInterfaces(); ifaces.hasMoreElements();) {
            NetworkInterface iface = (NetworkInterface) ifaces.nextElement();
            // Iterate all IP addresses assigned to each card...
            for (Enumeration inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) {
                InetAddress inetAddr = (InetAddress) inetAddrs.nextElement();
                if (!inetAddr.isLoopbackAddress()) {

                    if (inetAddr.isSiteLocalAddress()) {
                        // Found non-loopback site-local address. Return it immediately...
                        return inetAddr;
                    } else if (candidateAddress == null) {
                        // Found non-loopback address, but not necessarily site-local.
                        // Store it as a candidate to be returned if site-local address is not subsequently found...
                        candidateAddress = inetAddr;
                        // Note that we don't repeatedly assign non-loopback non-site-local addresses as candidates,
                        // only the first. For subsequent iterations, candidate will be non-null.
                    }
                }
            }
        }
        if (candidateAddress != null) {
            // We did not find a site-local address, but we found some other non-loopback address.
            // Server might have a non-site-local address assigned to its NIC (or it might be running
            // IPv6 which deprecates the "site-local" concept).
            // Return this non-loopback candidate address...
            return candidateAddress;
        }
        // At this point, we did not find a non-loopback address.
        // Fall back to returning whatever InetAddress.getLocalHost() returns...
        InetAddress jdkSuppliedAddress = InetAddress.getLocalHost();
        if (jdkSuppliedAddress == null) {
            throw new UnknownHostException(
                    "The JDK InetAddress.getLocalHost() method unexpectedly returned null.");
        }
        return jdkSuppliedAddress;
    } catch (Exception e) {
        UnknownHostException unknownHostException = new UnknownHostException(
                "Failed to determine LAN address: " + e);
        unknownHostException.initCause(e);
        throw unknownHostException;
    }
}

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From source file:com.joyent.manta.http.ApacheHttpGetResponseEntityContentContinuatorTest.java

@Test(expectedExceptions = UnknownHostException.class, expectedExceptionsMessageRegExp = ".*custom fatal exception yo.*")
public void rethrowsFatalExceptions() throws Exception {
    final MantaApacheHttpClientContext connCtx = mock(MantaApacheHttpClientContext.class);
    when(connCtx.getHttpClient()).thenReturn(mock(CloseableHttpClient.class));
    final HttpGet request = new HttpGet();
    final HttpResponse response = prepareResponseWithHeaders(unmodifiableMap(ETAG,
            singleValueHeaderList(ETAG, "a"), CONTENT_LENGTH, singleValueHeaderList(CONTENT_LENGTH, "1")));
    when(response.getStatusLine())/*from  www. j  a  v  a  2  s  . co  m*/
            .thenReturn(new BasicStatusLine(HttpVersion.HTTP_1_1, SC_PARTIAL_CONTENT, ""));

    final HttpDownloadContinuationMarker marker = HttpDownloadContinuationMarker.validateInitialExchange(
            extractDownloadRequestFingerprint(request), SC_OK,
            extractDownloadResponseFingerprint(response, true));

    new ApacheHttpGetResponseEntityContentContinuator(connCtx, request, marker, INFINITE_CONTINUATIONS)
            .buildContinuation(new UnknownHostException("custom fatal exception yo"), 0);
}

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From source file:org.saadahmed.snowcrystal.SnowCrystal.java

public static byte[] getIpAddress() {
    byte[] address = new byte[NODE_LENGTH];

    try {//from ww  w  . j ava2  s  . c o  m
        byte[] ipAddress = InetAddress.getLocalHost().getAddress();

        // NODE_LENGTH = 6
        if (ipAddress.length < SnowCrystal.NODE_LENGTH) {
            System.arraycopy(ipAddress, 0, address, 0, ipAddress.length);
            return address;
        }

        // NODE_LENGTH = 6
        else if (ipAddress.length == SnowCrystal.NODE_LENGTH) {
            return ipAddress;
        }

        // NODE_LENGTH = 6
        else if (ipAddress.length > SnowCrystal.NODE_LENGTH && ipAddress.length == 8) {
            System.arraycopy(ipAddress, 0, address, 0, SnowCrystal.NODE_LENGTH / 2);
            System.arraycopy(ipAddress, (SnowCrystal.NODE_LENGTH / 2) + 2, address,
                    (SnowCrystal.NODE_LENGTH / 2), SnowCrystal.NODE_LENGTH / 2);
            return address;
        }

        // NODE_LENGTH = 6
        else if (ipAddress.length > SnowCrystal.NODE_LENGTH && ipAddress.length != 8) {
            throw new UnknownHostException("Unknown host address type");
        }
    } catch (Exception e) {
        e.printStackTrace();
        new SecureRandom().nextBytes(address);
    }

    return address;
}

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From source file:org.apache.commons.httpclient.contrib.ssl.StrictSSLProtocolSocketFactory.java

/**
 * Describe <code>verifyHostname</code> method here.
 *
 * @param socket a <code>SSLSocket</code> value
 * @exception SSLPeerUnverifiedException  If there are problems obtaining
 * the server certificates from the SSL session, or the server host name 
 * does not match with the "Common Name" in the server certificates 
 * SubjectDN.//from   w  w w.j  ava2s  .c  om
 * @exception UnknownHostException  If we are not able to resolve
 * the SSL sessions returned server host name. 
 */
private void verifyHostname(SSLSocket socket) throws SSLPeerUnverifiedException, UnknownHostException {
    if (!verifyHostname)
        return;

    SSLSession session = socket.getSession();
    String hostname = session.getPeerHost();
    try {
        InetAddress addr = InetAddress.getByName(hostname);
    } catch (UnknownHostException uhe) {
        throw new UnknownHostException("Could not resolve SSL sessions " + "server hostname: " + hostname);
    }

    X509Certificate[] certs = session.getPeerCertificateChain();
    if (certs == null || certs.length == 0)
        throw new SSLPeerUnverifiedException("No server certificates found!");

    //get the servers DN in its string representation
    String dn = certs[0].getSubjectDN().getName();

    //might be useful to print out all certificates we receive from the
    //server, in case one has to debug a problem with the installed certs.
    if (LOG.isDebugEnabled()) {
        LOG.debug("Server certificate chain:");
        for (int i = 0; i < certs.length; i++) {
            LOG.debug("X509Certificate[" + i + "]=" + certs[i]);
        }
    }
    //get the common name from the first cert
    String cn = getCN(dn);
    if (hostname.equalsIgnoreCase(cn)) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Target hostname valid: " + cn);
        }
    } else {
        throw new SSLPeerUnverifiedException(
                "HTTPS hostname invalid: expected '" + hostname + "', received '" + cn + "'");
    }
}

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From source file:cc.abstra.trantor.security.ssl.OwnSSLProtocolSocketFactory.java

/**
 * Describe <code>verifyHostname</code> method here.
 *
 * @param socket a <code>SSLSocket</code> value
 * @exception SSLPeerUnverifiedException  If there are problems obtaining
 * the server certificates from the SSL session, or the server host name 
 * does not match with the "Common Name" in the server certificates 
 * SubjectDN./*from  w  ww. j  a va  2 s  .c  o m*/
 * @exception UnknownHostException  If we are not able to resolve
 * the SSL sessions returned server host name. 
 */
private void verifyHostname(SSLSocket socket) throws SSLPeerUnverifiedException, UnknownHostException {
    if (sslManager == null) {
        return;
    }
    ISSLErrorManager errorMng = sslManager.getSSLErrorManager();
    if (errorMng == null) {
        return;
    }

    SSLSession session = socket.getSession();
    String hostname = session.getPeerHost();
    try {
        InetAddress.getByName(hostname);
    } catch (UnknownHostException uhe) {
        throw new UnknownHostException("Could not resolve SSL sessions " + "server hostname: " + hostname);
    }

    X509Certificate[] certs = session.getPeerCertificateChain();
    if (certs == null || certs.length == 0)
        throw new SSLPeerUnverifiedException("No server certificates found!");

    //get the servers DN in its string representation
    String dn = certs[0].getSubjectDN().getName();

    //might be useful to print out all certificates we receive from the
    //server, in case one has to debug a problem with the installed certs.
    if (LOG.isDebugEnabled()) {
        LOG.debug("Server certificate chain:");
        for (int i = 0; i < certs.length; i++) {
            LOG.debug("X509Certificate[" + i + "]=" + certs[i]);
        }
    }
    //get the common name from the first cert
    String cn = getCN(dn);
    if (hostname.equalsIgnoreCase(cn)) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Target hostname valid: " + cn);
        }
    } else {
        try {
            CertificateFactory cf = CertificateFactory.getInstance("X.509");
            java.security.cert.X509Certificate servCert = (java.security.cert.X509Certificate) cf
                    .generateCertificate(new ByteArrayInputStream(certs[0].getEncoded()));
            if (!errorMng.continueErrorPeer(hostname, servCert)) {
                throw new SSLPeerUnverifiedException(
                        "HTTPS hostname invalid: expected '" + hostname + "', received '" + cn + "'");
            }
        } catch (CertificateException ex) {
            LOG.error(ex.getMessage(), ex);
            throw new SSLPeerUnverifiedException(
                    "Unexpected error checking HTTPS hostname: " + ex.getMessage());
        } catch (CertificateEncodingException ex) {
            LOG.error(ex.getMessage(), ex);
            throw new SSLPeerUnverifiedException(
                    "Unexpected error checking HTTPS hostname: " + ex.getMessage());
        }
    }
}

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From source file:com.clican.pluto.cms.core.service.impl.IssueServiceImpl.java

private boolean issue(ISite site, ITemplate template, IDataModel dataModel, String relativePath,
        Map<ISite, FTPClient> ftpMap) {
    Template t = null;//w  w w  .  j a v  a2 s . c om
    Writer w = null;
    VelocityContext velocityContext = new VelocityContext();
    velocityContext.put("this", dataModel);
    FTPClient client = null;
    try {
        SimpleNode node = RuntimeSingleton.getRuntimeServices().parse(template.getContent(),
                template.getName());
        t = new Template();
        t.setName(template.getName());
        t.setRuntimeServices(RuntimeSingleton.getRuntimeServices());
        t.setData(node);
        t.initDocument();
        OutputStream os = null;
        if (site.getUrl().startsWith("ftp://")) {
            client = null;
            if (ftpMap != null) {
                client = ftpMap.get(site);
            }
            if (client == null) {
                client = siteService.getFTPClient(site);
            }
            if (client == null) {
                log.error("This site[" + site.getName() + "] is unavailable");
                return false;
            }
            if (!relativePath.endsWith("/")) {
                relativePath = relativePath + "/";
            }
            client.mkd(relativePath);
            os = client.appendFileStream(relativePath + dataModel.getName() + "." + template.getSuffix());
        } else if (site.getUrl().startsWith("file://")) {
            String filePath = site.getUrl().substring(7);
            File file = new File(filePath + relativePath);
            if (file.exists()) {
                file.mkdirs();
            }
            os = new FileOutputStream(new File(file, dataModel.getName() + "." + template.getSuffix()));
        } else {
            throw new UnknownHostException(site.getUrl());
        }
        w = new OutputStreamWriter(os, "utf-8");
        t.merge(velocityContext, w);
        w.flush();
        return true;
    } catch (Exception e) {
        log.error("", e);
        return false;
    } finally {
        try {
            if (w != null) {
                w.close();
            }
        } catch (Exception e) {
            log.error("", e);
        }
        try {
            if (ftpMap == null && client != null) {
                client.logout();
                client.disconnect();
            }
        } catch (Exception e) {
            log.error("", e);
        }
    }
}

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From source file:edu.umass.cs.msocket.gns.GnsIntegration.java

/**
 * Return the GUID of the given alias//www. j  a v a  2s . co  m
 * throws UnknownHostException, so that it is similar to
 * exception thrown on DNS failure
 * @param alias
 * @param gnsCredentials
 * @return
 * @throws UnknownHostException
 */
public synchronized static String getGUIDOfAlias(String alias, GnsCredentials gnsCredentials)
        throws UnknownHostException {
    try {
        if (gnsCredentials == null) {
            long gnsCredStart = System.currentTimeMillis();
            gnsCredentials = GnsCredentials.getDefaultCredentials();
            long gnsCredEnd = System.currentTimeMillis();
            log.debug("gnsCredentials time" + (gnsCredEnd - gnsCredStart));
        }

        UniversalGnsClient gnsClient = gnsCredentials.getGnsClient();

        long checkConnStart = System.currentTimeMillis();
        gnsClient.checkConnectivity();
        long checkConnEnd = System.currentTimeMillis();
        log.debug("checkConnectivity time" + (checkConnEnd - checkConnStart));

        long guidLookupStart = System.currentTimeMillis();
        String guidAlias = gnsClient.lookupGuid(alias);
        long guidLookupEnd = System.currentTimeMillis();
        log.debug("lookupGuid time" + (guidLookupEnd - guidLookupStart));

        return guidAlias;
    } catch (Exception ex) {
        throw new UnknownHostException(ex.toString());
    }

}

---

From source file:com.hortonworks.hbase.replication.bridge.HBaseServer.java

/**
 * A convenience method to bind to a given address and report
 * better exceptions if the address is not a valid host.
 * @param socket the socket to bind//from  w  ww  . j a  v  a  2s .co  m
 * @param address the address to bind to
 * @param backlog the number of connections allowed in the queue
 * @throws BindException if the address can't be bound
 * @throws UnknownHostException if the address isn't a valid host name
 * @throws IOException other random errors from bind
 */
public static void bind(ServerSocket socket, InetSocketAddress address, int backlog) throws IOException {
    try {
        socket.bind(address, backlog);
    } catch (BindException e) {
        BindException bindException = new BindException(
                "Problem binding to " + address + " : " + e.getMessage());
        bindException.initCause(e);
        throw bindException;
    } catch (SocketException e) {
        // If they try to bind to a different host's address, give a better
        // error message.
        if ("Unresolved address".equals(e.getMessage())) {
            throw new UnknownHostException("Invalid hostname for server: " + address.getHostName());
        }
        throw e;
    }
}

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From source file:org.mariotaku.twidere.util.net.TwidereDns.java

@Override
public List<InetAddress> lookup(String hostname) throws UnknownHostException {
    try {//from  w  w  w.  j ava2 s .  c  om
        return Arrays.asList(resolveInternal(hostname, hostname, 0));
    } catch (IOException e) {
        if (e instanceof UnknownHostException)
            throw (UnknownHostException) e;
        throw new UnknownHostException("Unable to resolve address " + e.getMessage());
    }
}

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From source file:au.edu.monash.merc.capture.util.httpclient.ssl.StrictSSLProtocolSocketFactory.java

/**
 * Describe <code>verifyHostname</code> method here.
 * /*from  w w w. j  a va 2  s  .  c om*/
 * @param socket
 *            a <code>SSLSocket</code> value
 * @exception SSLPeerUnverifiedException
 *                If there are problems obtaining the server certificates from the SSL session, or the server host
 *                name does not match with the "Common Name" in the server certificates SubjectDN.
 * @exception UnknownHostException
 *                If we are not able to resolve the SSL sessions returned server host name.
 */
private void verifyHostname(SSLSocket socket) throws SSLPeerUnverifiedException, UnknownHostException {
    if (!verifyHostname)
        return;

    SSLSession session = socket.getSession();
    String hostname = session.getPeerHost();
    try {
        // InetAddress addr = InetAddress.getByName(hostname);
        InetAddress.getByName(hostname);
    } catch (UnknownHostException uhe) {
        throw new UnknownHostException("Could not resolve SSL sessions " + "server hostname: " + hostname);
    }

    X509Certificate[] certs = session.getPeerCertificateChain();
    if (certs == null || certs.length == 0)
        throw new SSLPeerUnverifiedException("No server certificates found!");

    // get the servers DN in its string representation
    String dn = certs[0].getSubjectDN().getName();

    // might be useful to print out all certificates we receive from the
    // server, in case one has to debug a problem with the installed certs.
    if (LOG.isDebugEnabled()) {
        LOG.debug("Server certificate chain:");
        for (int i = 0; i < certs.length; i++) {
            LOG.debug("X509Certificate[" + i + "]=" + certs[i]);
        }
    }
    // get the common name from the first cert
    String cn = getCN(dn);
    if (hostname.equalsIgnoreCase(cn)) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Target hostname valid: " + cn);
        }
    } else {
        throw new SSLPeerUnverifiedException(
                "HTTPS hostname invalid: expected '" + hostname + "', received '" + cn + "'");
    }
}

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