Example usage for java.net Socket close

Introduction

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

Prototype

public synchronized void close() throws IOException

Source Link

Document

Closes this socket.

Usage

From source file:Main.java

/**
 *
 * Resolve DNS name into IP address/*from w w w  .ja va 2s.c  o m*/
 *
 * @param host DNS name
 * @return IP address in integer format
 * @throws IOException
 */
public static int resolve(String host) throws IOException {
    Socket localSocket = new Socket(ADB_HOST, ADB_PORT);
    DataInputStream dis = new DataInputStream(localSocket.getInputStream());
    OutputStream os = localSocket.getOutputStream();
    int count_read = 0;

    if (localSocket == null || dis == null || os == null)
        return -1;
    String cmd = "dns:" + host;

    if (!sendAdbCmd(dis, os, cmd))
        return -1;

    count_read = dis.readInt();
    localSocket.close();
    return count_read;
}

From source file:org.apache.htrace.impl.HTracedProcess.java

private static StartupNotificationData readStartupNotification(ServerSocket listener) throws IOException {
    Socket socket = listener.accept();
    try {/*  w  w w.j a  va2  s  . co  m*/
        InputStream in = socket.getInputStream();
        ObjectMapper objectMapper = new ObjectMapper();
        StartupNotificationData data = objectMapper.readValue(in, StartupNotificationData.class);
        return data;
    } finally {
        socket.close();
    }
}

From source file:com.baomidou.mybatisplus.toolkit.IOUtils.java

/**
 * Closes a <code>Socket</code> unconditionally.
 * <p>/*from  www  .  j a  va  2  s . c  o m*/
 * Equivalent to {@link Socket#close()}, except any exceptions will be ignored. This is typically used in finally
 * blocks.
 * <p>
 * Example code:
 * <p>
 * <pre>
 * Socket socket = null;
 * try {
 *    socket = new Socket(&quot;http://www.foo.com/&quot;, 80);
 *    // process socket
 *    socket.close();
 * } catch (Exception e) {
 *    // error handling
 * } finally {
 *    IOUtils.closeQuietly(socket);
 * }
 * </pre>
 *
 * @param sock the Socket to close, may be null or already closed
 * @since 2.0
 */
public static void closeQuietly(final Socket sock) {
    if (sock != null) {
        try {
            sock.close();
        } catch (final IOException ioe) {
            logger.error("error close io", ioe);
        }
    }
}

From source file:com.linkedin.databus2.test.TestUtil.java

/**
 * Checks if a server is running on a given host and port
 * @param host        the server host/*from   w w w.  ja v a2  s  .  c  om*/
 * @param port        the server port
 * @param log         logger for diagnostic messages (can be null)
 * @return true if successful
 * @throws IOException
 */
public static boolean checkServerRunning(String host, int port, Logger log, boolean logError) {
    boolean success = false;

    try {
        Socket socket = new Socket(host, port);
        log.info("host=" + host + " port=" + port);
        log.info("Socket Info:" + socket.toString());
        log.info("IsConnected=" + socket.isConnected() + " isClosed=" + socket.isClosed() + " isBound="
                + socket.isBound());
        success = socket.isConnected();
        socket.close();
    } catch (ConnectException ce) {
        if (null != log)
            log.error("Fail to connect to port:" + port);
        if (logError && null != log)
            log.error("Connect error", ce);
        success = false;
    } catch (IOException e) {
        if (logError && null != log)
            log.error("connect error", e);
    } catch (RuntimeException e) {
        if (logError && null != log)
            log.error("runtime error", e);
    }

    return success;
}

From source file:com.netflix.spinnaker.halyard.deploy.spinnaker.v1.service.distributed.google.GoogleProviderUtils.java

static private boolean checkIfProxyIsOpen(Proxy proxy) {
    boolean connected = false;
    int tries = 0;
    int port = proxy.getPort();

    while (!connected && tries < connectRetries) {
        tries++;//from w w w.ja  v a  2 s .  co m

        try {
            log.info("Attempting to connect to localhost:" + port + "...");
            Socket testSocket = new Socket("localhost", port);
            log.info("Connection opened");

            connected = testSocket.isConnected();
            testSocket.close();
        } catch (IOException e) {
            DaemonTaskHandler.safeSleep(TimeUnit.SECONDS.toMillis(5));
        }
    }

    return connected;
}

From source file:com.cyberway.issue.crawler.fetcher.FetchFTP.java

/**
 * Quietly closes the given socket./*  ww  w.j av  a 2  s  . c  om*/
 * 
 * @param socket  the socket to close
 */
private static void close(Socket socket) {
    try {
        socket.close();
    } catch (IOException e) {
        logger.log(Level.WARNING, "IO error closing socket.", e);
    }
}

From source file:Main.java

public static void handleClientRequest(Socket socket) {
    try {// w  w  w  .jav  a  2  s  .c o  m
        BufferedReader socketReader = null;
        BufferedWriter socketWriter = null;
        socketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        socketWriter = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

        String inMsg = null;
        while ((inMsg = socketReader.readLine()) != null) {
            System.out.println("Received from  client: " + inMsg);

            String outMsg = inMsg;
            socketWriter.write(outMsg);
            socketWriter.write("\n");
            socketWriter.flush();
        }
        socket.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

From source file:com.splout.db.benchmark.TCPTest.java

public static void tcpTest(String file, String table)
        throws UnknownHostException, IOException, InterruptedException, JSONSerDeException {
    final TCPServer server = new TCPServer(8888, file, table);

    Thread t = new Thread() {
        @Override//  ww  w .ja  v a 2s  . co  m
        public void run() {
            server.serve();
        }
    };
    t.start();

    while (!server.isServing()) {
        Thread.sleep(100);
    }

    Socket clientSocket = new Socket("localhost", 8888);
    DataInputStream inFromServer = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));

    try {
        do {
            // Read a record
            inFromServer.readUTF();
            inFromServer.readInt();
            inFromServer.readDouble();
            inFromServer.readUTF();
        } while (true);
    } catch (Throwable th) {
        th.printStackTrace();
    }

    clientSocket.close();
    server.stop();
    t.interrupt();
}

From source file:com.sshtools.daemon.SshDaemon.java

/**
 *
 *
 * @param msg/*from w  ww. j ava 2  s .c o  m*/
 *
 * @throws IOException
 */
public static void stop(String msg) throws IOException {
    try {
        Socket socket = new Socket(InetAddress.getByName("127.0.0.1"),
                ((ServerConfiguration) ConfigurationLoader.getConfiguration(ServerConfiguration.class))
                        .getCommandPort());

        // Write the command id
        socket.getOutputStream().write(0x3a);

        // Write the length of the message (max 255)
        int len = (msg.length() <= 255) ? msg.length() : 255;
        socket.getOutputStream().write(len);

        // Write the message
        if (len > 0) {
            socket.getOutputStream().write(msg.substring(0, len).getBytes());
        }

        socket.close();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    }
}

From source file:com.uniteddev.Unity.Login.java

public static void networkStatus(String state) {
    class networkService implements Runnable {
        public void run() {
            while (true) {
                Socket s = null;
                boolean connected = false;
                try {
                    s = new Socket(Unity.ip, Integer.parseInt(Unity.port));
                    connected = true;//from w  w  w  .jav  a 2  s.c o m
                } catch (Exception e) {
                } finally {
                    if (s != null) {
                        try {
                            s.close();
                        } catch (IOException e1) {

                        }
                    }
                }
                if (connected) {
                    System.out.println("Connection to server established.");
                    server_stat_lbl.setText("Online");
                    server_stat_lbl.setForeground(Color.GREEN);
                } else {
                    System.out.println("Unable to establish connection.");
                    server_stat_lbl.setText("Offline");
                    server_stat_lbl.setForeground(Color.RED);
                }
                try {
                    Thread.sleep(5000);
                } catch (Exception e) {
                }
                ;
            }

        }
    }
    if (state == "start") {
        networkProbe = new Thread(new networkService());
        networkProbe.start();
    } else if (state == "stop") {
        // kill thread only if it is sleeping, otherwise 
        // we may have open socket connections
        try {
            while (networkProbe.getState() != Thread.State.TIMED_WAITING) {
                networkProbe.join(1000);
            }
            networkProbe.interrupt();
        } catch (InterruptedException e) {
        }
    }
}