Example usage for java.net Socket connect

Introduction

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

Prototype

public void connect(SocketAddress endpoint, int timeout) throws IOException 

Source Link

Document

Connects this socket to the server with a specified timeout value.

Usage

From source file:com.alibaba.wasp.zookeeper.ZKUtil.java

/**
 * Gets the statistics from the given server.
 *
 * @param server/*w ww . ja v a  2 s .  c  o m*/
 *          The server to get the statistics from.
 * @param timeout
 *          The socket timeout to use.
 * @return The array of response strings.
 * @throws java.io.IOException
 *           When the socket communication fails.
 */
public static String[] getServerStats(String server, int timeout) throws IOException {
    String[] sp = server.split(":");
    if (sp == null || sp.length == 0) {
        return null;
    }

    String host = sp[0];
    int port = sp.length > 1 ? Integer.parseInt(sp[1]) : HConstants.DEFAULT_ZOOKEPER_CLIENT_PORT;

    Socket socket = new Socket();
    InetSocketAddress sockAddr = new InetSocketAddress(host, port);
    socket.connect(sockAddr, timeout);

    socket.setSoTimeout(timeout);
    PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    out.println("stat");
    out.flush();
    ArrayList<String> res = new ArrayList<String>();
    while (true) {
        String line = in.readLine();
        if (line != null) {
            res.add(line);
        } else {
            break;
        }
    }
    socket.close();
    return res.toArray(new String[res.size()]);
}

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From source file:com.bfd.harpc.heartbeat.HeartBeatTask.java

/**
 * socket?/*from   w  w w .j  a  v  a2  s  . c  o  m*/
 * <p>
 * 
 * @param serverNode
 */
private boolean checkSocket(ServerNode serverNode) {
    boolean isValid = false;
    Socket socket = null;
    try {
        InetSocketAddress socketAddress = new InetSocketAddress(serverNode.getIp(), serverNode.getPort());
        socket = new Socket();
        socket.connect(socketAddress, heartbeatTimeout);
        isValid = true;
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Heartbeat to remote " + serverNode.genAddress() + " success!");
        }
    } catch (IOException e) {
        LOGGER.warn("Heartbeat to remote " + serverNode.genAddress() + " failure!", e);
    } finally {
        if (socket != null) {
            try {
                socket.close();
            } catch (IOException e) {
                LOGGER.warn(e.getMessage(), e);
            }
        }
    }
    return isValid;
}

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From source file:org.apache.ambari.server.KdcServerConnectionVerification.java

/**
 * Attempt to connect to KDC server over TCP.
 *
 * @param server KDC server IP or hostname
 * @param port    KDC server port/*from  ww  w .  ja  va 2s . c  o m*/
 * @return   true, if server is accepting connection given port; false otherwise.
 */
public boolean isKdcReachableViaTCP(String server, int port) {
    Socket socket = null;
    try {
        socket = new Socket();
        socket.connect(new InetSocketAddress(server, port), config.getKdcConnectionCheckTimeout());
    } catch (UnknownHostException e) {
        LOG.error("Unable to resolve Kerberos Server hostname");
        return false;
    } catch (IOException e) {
        LOG.error("Unable to connect to Kerberos Server");
        return false;
    } finally {
        if (socket != null) {
            try {
                socket.close();
            } catch (IOException e) {
                LOG.debug("Error while closing socket connection to Kerberos Server. Can be ignored.");
            }
        }
    }

    return true;
}

---

From source file:org.eclipse.mylyn.commons.net.WebUtil.java

/**
 * @since 3.0/* w  w w  .ja  v a 2 s.  c o m*/
 */
public static void connect(final Socket socket, final InetSocketAddress address, final int timeout,
        IProgressMonitor monitor) throws IOException {
    Assert.isNotNull(socket);

    WebRequest<?> executor = new WebRequest<Object>() {
        @Override
        public void abort() {
            try {
                socket.close();
            } catch (IOException e) {
                // ignore
            }
        }

        public Object call() throws Exception {
            socket.connect(address, timeout);
            return null;
        }
    };
    executeInternal(monitor, executor);
}

---

From source file:org.jenkinsci.remoting.protocol.IOHubTest.java

@Test
public void canAcceptSocketConnections() throws Exception {
    final ServerSocketChannel srv = ServerSocketChannel.open();
    srv.bind(new InetSocketAddress(0));
    srv.configureBlocking(false);//  w  w  w.  j  av  a  2 s  .c  om
    final AtomicReference<SelectionKey> key = new AtomicReference<SelectionKey>();
    final AtomicBoolean oops = new AtomicBoolean(false);
    hub.hub().register(srv, new IOHubReadyListener() {

        final AtomicInteger count = new AtomicInteger(0);

        @Override
        public void ready(boolean accept, boolean connect, boolean read, boolean write) {
            if (accept) {
                try {
                    SocketChannel channel = srv.accept();
                    channel.write(ByteBuffer.wrap(String.format("Go away #%d", count.incrementAndGet())
                            .getBytes(Charset.forName("UTF-8"))));
                    channel.close();
                } catch (IOException e) {
                    // ignore
                }
                hub.hub().addInterestAccept(key.get());
            } else {
                oops.set(true);
            }
            if (connect || read || write) {
                oops.set(true);
            }
        }
    }, true, false, false, false, new IOHubRegistrationCallback() {
        @Override
        public void onRegistered(SelectionKey selectionKey) {
            key.set(selectionKey);
        }

        @Override
        public void onClosedChannel(ClosedChannelException e) {

        }
    });
    Socket client = new Socket();
    client.connect(srv.getLocalAddress(), 100);
    assertThat(IOUtils.toString(client.getInputStream()), is("Go away #1"));
    client = new Socket();
    client.connect(srv.getLocalAddress(), 100);
    assertThat(IOUtils.toString(client.getInputStream()), is("Go away #2"));
    assertThat("Only ever called ready with accept true", oops.get(), is(false));
}

---

From source file:org.elasticsearch.hadoop.rest.commonshttp.SocksSocketFactory.java

public Socket createSocket(final String host, final int port, final InetAddress localAddress,
        final int localPort, final HttpConnectionParams params)
        throws IOException, UnknownHostException, ConnectTimeoutException {

    InetSocketAddress socksAddr = new InetSocketAddress(socksHost, socksPort);
    Proxy proxy = new Proxy(Proxy.Type.SOCKS, socksAddr);
    int timeout = params.getConnectionTimeout();

    Socket socket = new Socket(proxy);
    socket.setSoTimeout(timeout);/*from  ww w .java 2  s .c o  m*/

    SocketAddress localaddr = new InetSocketAddress(localAddress, localPort);
    SocketAddress remoteaddr = new InetSocketAddress(host, port);
    socket.bind(localaddr);
    socket.connect(remoteaddr, timeout);
    return socket;
}

---

From source file:fm.last.moji.tracker.impl.AbstractTrackerFactory.java

public Tracker newTracker(InetSocketAddress newAddress) throws TrackerException {
    log.debug("new {}()", TrackerImpl.class.getSimpleName());
    Tracker tracker = null;//  w w w . j  a  v  a  2 s .c om
    BufferedReader reader = null;
    Writer writer = null;
    Socket socket = null;
    try {
        socket = new Socket(netConfig.getProxy());
        socket.setSoTimeout(netConfig.getTrackerReadTimeout());
        log.debug("Connecting to: {}:", newAddress, socket.getPort());
        socket.connect(newAddress, netConfig.getTrackerConnectTimeout());
        reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
        RequestHandler requestHandler = new RequestHandler(writer, reader);
        tracker = new TrackerImpl(socket, requestHandler);
    } catch (IOException e) {
        IOUtils.closeQuietly(reader);
        IOUtils.closeQuietly(writer);
        IOUtils.closeQuietly(socket);
        throw new TrackerException(e);
    }
    return tracker;
}

---

From source file:org.oscarehr.olis.OLISProtocolSocketFactory.java

public Socket createSocket(final String host, final int port, final InetAddress localAddress,
        final int localPort, final HttpConnectionParams params) throws IOException {
    if (params == null) {
        throw new IllegalArgumentException("Parameters may not be null");
    }//from w  ww  .  java2s  .  com
    int timeout = params.getConnectionTimeout();
    SocketFactory socketfactory = context.getSocketFactory();
    if (timeout == 0) {
        return socketfactory.createSocket(host, port, localAddress, localPort);
    } else {
        Socket socket = socketfactory.createSocket();
        SocketAddress localaddr = new InetSocketAddress(localAddress, localPort);
        SocketAddress remoteaddr = new InetSocketAddress(host, port);
        socket.bind(localaddr);
        socket.connect(remoteaddr, timeout);
        return socket;
    }
}

---

From source file:net.arccotangent.pacchat.net.KeyUpdateClient.java

public void run() {
    Socket socket;
    BufferedReader input;//from   ww  w  . j a v  a 2s.  c  o  m
    BufferedWriter output;

    kuc_log.i("Connecting to server at " + server_ip);

    try {
        socket = new Socket();
        socket.connect(new InetSocketAddress(InetAddress.getByName(server_ip), Server.PORT), 1000);
        input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        output = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
    } catch (SocketTimeoutException e) {
        kuc_log.e("Connection to server timed out!");
        e.printStackTrace();
        return;
    } catch (ConnectException e) {
        kuc_log.e("Connection to server was refused!");
        e.printStackTrace();
        return;
    } catch (UnknownHostException e) {
        kuc_log.e("You entered an invalid IP address!");
        e.printStackTrace();
        return;
    } catch (IOException e) {
        kuc_log.e("Error connecting to server!");
        e.printStackTrace();
        return;
    }

    try {
        kuc_log.i("Requesting a key update.");
        output.write("302 request key update");
        output.newLine();
        output.flush();

        kuc_log.i("Awaiting response from server.");
        String update = input.readLine();
        switch (update) {
        case "303 update":
            kuc_log.i("Server accepted update request, sending public key.");
            String pubkeyB64 = Base64.encodeBase64String(Main.getKeypair().getPublic().getEncoded());
            output.write(pubkeyB64);
            output.newLine();
            output.flush();
            output.close();
            break;
        case "304 no update":
            kuc_log.i("Server rejected update request, closing connection.");
            input.close();
            output.close();
            break;
        case "305 update unavailable":
            kuc_log.i("Server cannot update at this time, try again later.");
            input.close();
            output.close();
            break;
        default:
            kuc_log.i("Server sent back invalid response");
            input.close();
            output.close();
            break;
        }
    } catch (IOException e) {
        kuc_log.e("Error in key update request!");
        e.printStackTrace();
    }
}

---

From source file:com.supernovapps.audio.jstreamsourcer.Icecast.java

public boolean start(Socket sock) {
    try {//from  w w w  . ja  va 2 s .c om
        this.sock = sock;
        sock.connect(new InetSocketAddress(host, port), timeout);
        sock.setSendBufferSize(64 * 1024);
        out = sock.getOutputStream();

        PrintWriter output = new PrintWriter(out);
        output.println("SOURCE " + path + " HTTP/1.0");

        writeAuthentication(output);
        writeHeaders(output);

        output.println("");
        output.flush();

        InputStreamReader isr = new InputStreamReader(sock.getInputStream());
        BufferedReader in = new BufferedReader(isr);
        String line = in.readLine();

        if (line == null || !line.contains("HTTP") || !line.contains("OK")) {
            if (listener != null) {
                listener.onError("Connection / Authentification error");
            }
            return false;
        }
    } catch (Exception e) {
        e.printStackTrace();

        try {
            if (sock != null) {
                sock.close();
            }
        } catch (IOException e1) {
            e1.printStackTrace();
        }

        if (listener != null) {
            listener.onError("Connection / Authentification error");
        }

        return false;
    }
    started = true;

    if (listener != null) {
        listener.onConnected();
    }

    return true;
}

---

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