Esempio n. 1
1
  public static void main(String[] args) throws IOException, InterruptedException {
    boolean running = true;
    // udp protocol over a socket.
    DatagramSocket socket = new DatagramSocket();

    while (running) {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

      String line = br.readLine();
      String[] inputs = line.split(" ");

      if (inputs.length < 2) {
        System.out.println("Usage: username command id");
        socket.close();
        return;
      }

      byte[] byteArr = (inputs[0] + " " + inputs[1] + " " + inputs[2]).getBytes();

      // send request
      byte[] buf = new byte[256];
      InetAddress address = InetAddress.getByName("localhost");
      DatagramPacket packet = new DatagramPacket(byteArr, byteArr.length, address, 4445);
      socket.send(packet);

      // get response
      packet = new DatagramPacket(buf, buf.length);
      socket.receive(packet);

      // display response
      String received = new String(packet.getData(), 0, packet.getLength());
      System.out.println("From server: " + received);
    }
    //   socket.close();
  }
Esempio n. 2
0
 /** List file names */
 public Enumeration nlst(String s) throws IOException {
   InetAddress inetAddress = InetAddress.getLocalHost();
   byte ab[] = inetAddress.getAddress();
   serverSocket_ = new ServerSocket(0, 1);
   StringBuffer sb = new StringBuffer(32);
   sb.append("PORT ");
   for (int i = 0; i < ab.length; i++) {
     sb.append(String.valueOf(ab[i] & 255));
     sb.append(",");
   }
   sb.append(String.valueOf(serverSocket_.getLocalPort() >>> 8 & 255));
   sb.append(",");
   sb.append(String.valueOf(serverSocket_.getLocalPort() & 255));
   if (issueCommand(sb.toString()) != FTP_SUCCESS) {
     serverSocket_.close();
     throw new IOException(getResponseString());
   } else if (issueCommand("NLST " + ((s == null) ? "" : s)) != FTP_SUCCESS) {
     serverSocket_.close();
     throw new IOException(getResponseString());
   }
   dataSocket_ = serverSocket_.accept();
   serverSocket_.close();
   serverSocket_ = null;
   Vector v = readServerResponse_(dataSocket_.getInputStream());
   dataSocket_.close();
   dataSocket_ = null;
   return (v == null) ? null : v.elements();
 }
 private void setupProxy(
     ConnectivitySettings cs, int connectionType, InetSocketAddress inetSocketAddress) {
   cs.setConnectionType(connectionType);
   InetAddress address = inetSocketAddress.getAddress();
   cs.setProxyHost((address != null) ? address.getHostAddress() : inetSocketAddress.getHostName());
   cs.setProxyPort(inetSocketAddress.getPort());
 }
  /** Block datagrams from given source if a memory to receive all datagrams. */
  void block(MembershipKeyImpl key, InetAddress source) throws IOException {
    assert key.channel() == this;
    assert key.sourceAddress() == null;

    synchronized (stateLock) {
      if (!key.isValid()) throw new IllegalStateException("key is no longer valid");
      if (source.isAnyLocalAddress())
        throw new IllegalArgumentException("Source address is a wildcard address");
      if (source.isMulticastAddress())
        throw new IllegalArgumentException("Source address is multicast address");
      if (source.getClass() != key.group().getClass())
        throw new IllegalArgumentException("Source address is different type to group");

      int n;
      if (key instanceof MembershipKeyImpl.Type6) {
        MembershipKeyImpl.Type6 key6 = (MembershipKeyImpl.Type6) key;
        n = Net.block6(fd, key6.groupAddress(), key6.index(), Net.inet6AsByteArray(source));
      } else {
        MembershipKeyImpl.Type4 key4 = (MembershipKeyImpl.Type4) key;
        n = Net.block4(fd, key4.groupAddress(), key4.interfaceAddress(), Net.inet4AsInt(source));
      }
      if (n == IOStatus.UNAVAILABLE) {
        // ancient kernel
        throw new UnsupportedOperationException();
      }
    }
  }
Esempio n. 5
0
  /** 启动初始化,他确定网络中有多少个其它UDPBase和相关的信息 */
  public void initNet() throws UDPBaseException {
    try {
      mainThread = new SoleThread(this);

      localIP = InetAddress.getLocalHost().getHostAddress();
      int i = localIP.lastIndexOf('.');
      BROADCAST_ADDR = localIP.substring(0, i) + ".255";
      // System.out.println ("lip=="+localIP) ;
      // sendSocket = new DatagramSocket () ;
      // recvSocket = new MulticastSocket (RECV_PORT) ;
      recvSocket = new DatagramSocket(RECV_PORT);
      sendSocket = recvSocket;
      // recvAckSocket = new MulticastSocket (RECV_ACK_PORT) ;
      group = InetAddress.getByName(BROADCAST_ADDR);
      // recvSocket.joinGroup (group) ;
      // recvAckSocket.joinGroup (group) ;

      procMsgThd = new ProcMsgThd();
      procMsgThd.start();
      //
      mainThread.start();
    } catch (Exception e) {
      e.printStackTrace();
      throw new UDPBaseException("UDPBase init() error=\n" + e.toString());
    }
  }
  /** Creates the server. */
  public static void main(String args[]) {
    client = null;
    ServerSocket server = null;

    try {
      System.out.print("\nCreating Server...\n");
      // creates the server
      server = new ServerSocket(8008);
      System.out.print("Created\n");
      // get the ip Address and the host name.
      InetAddress localAddr = InetAddress.getLocalHost();
      System.out.println("IP address: " + localAddr.getHostAddress());
      System.out.println("Hostname: " + localAddr.getHostName());

    } catch (IOException e) {
      // sends a
      System.out.println("IO" + e);
    }

    // constantly checks for a new aocket trying to attach itself to the trhead
    while (true) {
      try {
        client = server.accept();
        // create a new thread.
        FinalMultiThread thr = new FinalMultiThread(client);
        System.out.print(client.getInetAddress() + " : " + thr.getUserName() + "\n");
        CliList.add(thr);
        current++;
        thr.start();
      } catch (IOException e) {
        System.out.println(e);
      }
    }
  }
Esempio n. 7
0
  static void readConfig() {
    tracker_ip = COConfigurationManager.getStringParameter("Tracker IP", "");

    tracker_ip = UrlUtils.expandIPV6Host(tracker_ip);

    String override_ips = COConfigurationManager.getStringParameter("Override Ip", "");

    StringTokenizer tok = new StringTokenizer(override_ips, ";");

    Map new_override_map = new HashMap();

    while (tok.hasMoreTokens()) {

      String ip = tok.nextToken().trim();

      if (ip.length() > 0) {

        new_override_map.put(AENetworkClassifier.categoriseAddress(ip), ip);
      }
    }

    override_map = new_override_map;

    InetAddress bad = NetworkAdmin.getSingleton().getSingleHomedServiceBindAddress();

    if (bad == null || bad.isAnyLocalAddress()) {

      bind_ip = "";

    } else {

      bind_ip = bad.getHostAddress();
    }
  }
  private Core() {
    boolean f = false;
    try {
      for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
        NetworkInterface intf = (NetworkInterface) en.nextElement();
        for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
          InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
          if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
            String ipAddress = inetAddress.getHostAddress().toString();
            this.ip = inetAddress;
            f = true;
            break;
          }
        }
        if (f) break;
      }
    } catch (SocketException ex) {
      ex.printStackTrace();
      System.exit(1);
    }
    this.teams = new HashMap<String, Team>();
    this.judges = new HashMap<String, Judge>();
    this.problems = new HashMap<String, ProblemInfo>();
    this.scheduler = new Scheduler();
    this.timer = new ContestTimer(300 * 60);

    try {
      readConfigure();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
      System.exit(1);
    }
    this.scoreBoardHttpServer = new ScoreBoardHttpServer(this.scoreBoardPort);
  }
Esempio n. 9
0
  // function to do the join use case
  public static void share() throws Exception {
    HttpPost method = new HttpPost(url + "/share");
    String ipAddress = null;

    Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
    while (en.hasMoreElements()) {
      NetworkInterface ni = (NetworkInterface) en.nextElement();
      if (ni.getName().equals("eth0")) {
        Enumeration<InetAddress> en2 = ni.getInetAddresses();
        while (en2.hasMoreElements()) {
          InetAddress ip = (InetAddress) en2.nextElement();
          if (ip instanceof Inet4Address) {
            ipAddress = ip.getHostAddress();
            break;
          }
        }
        break;
      }
    }

    method.setEntity(new StringEntity(username + ';' + ipAddress, "UTF-8"));
    try {
      ResponseHandler<String> responseHandler = new BasicResponseHandler();
      connIp = client.execute(method, responseHandler);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }

    // get present time
    date = new Date();
    long start = date.getTime();

    // Execute the vishwa share process
    Process p = Runtime.getRuntime().exec("java -jar vishwa/JVishwa.jar " + connIp);

    String ch = "alive";
    System.out.println("Type kill to unjoin from the grid");

    while (!ch.equals("kill")) {
      BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
      ch = in.readLine();
    }

    p.destroy();

    date = new Date();
    long end = date.getTime();
    long durationInt = end - start;

    String duration = String.valueOf(durationInt);
    method = new HttpPost(url + "/shareAck");
    method.setEntity(new StringEntity(username + ";" + duration, "UTF-8"));
    try {
      client.execute(method);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }
  }
Esempio n. 10
0
  // 获得IP地址
  public static String getIpAddr(HttpServletRequest request) {
    String ipAddress = null;
    ipAddress = request.getHeader("x-forwarded-for");
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
      ipAddress = request.getHeader("Proxy-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
      ipAddress = request.getHeader("WL-Proxy-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
      ipAddress = request.getRemoteAddr();
      if (ipAddress.equals("127.0.0.1")) {
        // 根据网卡取本机配置的IP
        InetAddress inet = null;
        try {
          inet = InetAddress.getLocalHost();
        } catch (UnknownHostException e) {
          e.printStackTrace();
        }
        ipAddress = inet.getHostAddress();
      }
    }

    // 对于通过多个代理的情况,第一个IP为客户端真实IP,多个IP按照','分割
    if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
      // = 15
      if (ipAddress.indexOf(",") > 0) {
        ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
      }
    }
    return ipAddress;
  }
Esempio n. 11
0
 // Check for an IP, since this seems to be safer to return then a plain name
 private String getIpIfPossible(String pHost) {
   try {
     InetAddress address = InetAddress.getByName(pHost);
     return address.getHostAddress();
   } catch (UnknownHostException e) {
     return pHost;
   }
 }
Esempio n. 12
0
 public byte[] getRAddr() {
   try {
     InetAddress addr = InetAddress.getByName(host);
     return addr.getAddress();
   } catch (UnknownHostException e) {
     System.err.println("NCCPConnection::getRAddr Don't know about host: ");
     return null;
   }
 }
Esempio n. 13
0
 /**
  * @throws RemoteException
  * @throws UnknownHostException
  */
 public void stabilize() throws RemoteException, UnknownHostException {
   ChordMessageInterface succ = rmiChord(successor.getIp(), successor.getPort());
   Finger x = succ.getPredecessor();
   if (ino(x.getId(), i, successor.getId())) {
     successor = x;
   }
   InetAddress ip = InetAddress.getLocalHost();
   succ = rmiChord(successor.getIp(), successor.getPort());
   succ.notify(new Finger(ip.getHostAddress(), port, i));
 }
Esempio n. 14
0
 // ---------------------------------------------------------
 // decide whether two host names (h1, h2) refer to same IP
 // ---------------------------------------------------------
 public static boolean sameHost(String h1, String h2) {
   try {
     String a1 = InetAddress.getByName(h1).getHostAddress();
     String a2 = InetAddress.getByName(h2).getHostAddress();
     if (a1.equals(a2)) return true;
   } catch (Exception e) {
     System.out.println(e);
   }
   return false;
 }
Esempio n. 15
0
 /**
  * Creates a SimpleResolver that will query the specified host
  *
  * @exception UnknownHostException Failure occurred while finding the host
  */
 public SimpleResolver(String hostname) throws UnknownHostException {
   if (hostname == null) {
     hostname = ResolverConfig.getCurrentConfig().server();
     if (hostname == null) hostname = defaultResolver;
   }
   InetAddress addr;
   if (hostname.equals("0")) addr = InetAddress.getLocalHost();
   else addr = InetAddress.getByName(hostname);
   address = new InetSocketAddress(addr, DEFAULT_PORT);
 }
Esempio n. 16
0
  private Descrittore contatta_server(String nome) {

    // variabili per l'RMI
    RMIServerInt serv = null; // server
    Descrittore descr_rit = null; // descrittore ritornato

    if (nome == null) {
      System.out.println("## contatta_server di Download ha ricevuto parametro null ! ");
      return null;
    }

    System.out.println("@ provo a contattare il server RMI ");
    // ################  RMI ################
    if (System.getSecurityManager() == null) {
      System.setSecurityManager(new SecurityManager());
    }

    Object o = null;
    try {
      // o = Naming.lookup("rmi://192.168.0.10:1099/srmi");
      Registry registry = LocateRegistry.getRegistry(server.getHostAddress());
      o = registry.lookup("srmi");

    } catch (RemoteException e) {
      System.out.println("## Problemi nell'RMI di Download - contatta_server di " + nome);
      e.printStackTrace();
    } catch (NotBoundException e) {
      System.out.println("## Problemi nell'RMI di Download - contatta_server di " + nome);
      e.printStackTrace();
    }

    if (o == null) {
      System.out.println(
          "## l'RMI di Download - contatta_server di " + nome + " ha ritornato l'oggetto o null");
      return null;
    }

    serv = (RMIServerInt) o;

    try {
      descr_rit = serv.lookup(nome, InetAddress.getLocalHost());
    } catch (RemoteException e) {
      e.printStackTrace();
      System.out.println("## Problemi con Lookup di " + nome);
      return null;

    } catch (UnknownHostException e) {
      e.printStackTrace();
      System.out.println("## Problemi con Lookup di " + nome);
      return null;
    }

    return descr_rit;
  }
 public String getLocalAddress() {
   InetAddress mcastAddr = ssdpMultiGroup.getAddress();
   Enumeration addrs = ssdpMultiIf.getInetAddresses();
   while (addrs.hasMoreElements()) {
     InetAddress addr = (InetAddress) addrs.nextElement();
     if (mcastAddr instanceof Inet6Address && addr instanceof Inet6Address)
       return addr.getHostAddress();
     if (mcastAddr instanceof Inet4Address && addr instanceof Inet4Address)
       return addr.getHostAddress();
   }
   return "";
 }
Esempio n. 18
0
 protected String getHostName() {
   String res = ConfigManager.getPlatformHostname();
   if (res == null) {
     try {
       InetAddress inet = InetAddress.getLocalHost();
       return inet.getHostName();
     } catch (UnknownHostException e) {
       log.warning("Can't get hostname", e);
       return "unknown";
     }
   }
   return res;
 }
Esempio n. 19
0
  /**
   * Returns the name of the localhost. If that cannot be found it will return <code>localhost
   * </code>.
   *
   * @return my host
   */
  public static String myHost() {
    String str = null;
    try {
      InetAddress inetA = InetAddress.getLocalHost();
      str = inetA.getHostName();
    } catch (UnknownHostException exc) {
    }

    if (str == null) {
      str = "localhost";
    }
    return str;
  }
Esempio n. 20
0
  public String detectPPP() {
    try {
      List<String> linkPPP = new ArrayList<String>();
      List<String> linkDSL = new ArrayList<String>();
      Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();

      // System.out.println("NETS VALUES"+" "+nets);

      // System.out.println("INITIALY VALUES"+" "+linkPPP);

      for (NetworkInterface netInf : Collections.list(nets)) {
        // System.out.println("netInf VALUES"+" "+netInf);

        if (!netInf.isLoopback()) {
          if (netInf.isPointToPoint()) {
            // System.out.println("in point to point");
            // System.out.println("netInf VALUES"+" "+netInf);
            Enumeration<InetAddress> inetAdd = netInf.getInetAddresses();
            // System.out.println("inetAdd VALUES"+" "+inetAdd);
            for (InetAddress inet : Collections.list(inetAdd)) {
              // System.out.println("inet vales in the ineer loop"+" "+inet);
              // System.out.println("linkPPP vales before add in the ineer loop"+" "+linkPPP);
              linkPPP.add(inet.getHostAddress()); // 				
              // System.out.println("linkPPP vales after add in the ineer loop"+" "+linkPPP);
              // System.out.println("IP:"+" "+inet.getHostAddress());
            }
          } else {
            Enumeration<InetAddress> inetAdd = netInf.getInetAddresses();
            for (InetAddress inet : Collections.list(inetAdd)) {
              linkDSL.add(inet.getHostAddress());
            }
          }
        }
      }
      // System.out.println("FINAL VALUE of linkPPP"+" "+linkPPP.get(0));
      // System.out.println("FINAL VALUES DSL"+" "+linkDSL);
      int i = linkPPP.size();
      if (i != 0) {
        // System.out.println("linkPPP"+" "+linkPPP.get(i-1));
        return linkPPP.get(i - 1) + ",y";
        // return linkPPP.get(0)+",y";
      } else if (linkDSL.size() != 0) return linkDSL.get(i - 1) + ",n";
      // return linkDSL.get(0)+",n";
      else return "127.0.0.1,n";
    } catch (SocketException e) {
      // e.printStackTrace();
      System.err.println("exception in ");
    }

    return "127.0.0.1,n";
  }
  public int send(ByteBuffer src, SocketAddress target) throws IOException {
    if (src == null) throw new NullPointerException();

    synchronized (writeLock) {
      ensureOpen();
      InetSocketAddress isa = Net.checkAddress(target);
      InetAddress ia = isa.getAddress();
      if (ia == null) throw new IOException("Target address not resolved");
      synchronized (stateLock) {
        if (!isConnected()) {
          if (target == null) throw new NullPointerException();
          SecurityManager sm = System.getSecurityManager();
          if (sm != null) {
            if (ia.isMulticastAddress()) {
              sm.checkMulticast(ia);
            } else {
              sm.checkConnect(ia.getHostAddress(), isa.getPort());
            }
          }
        } else { // Connected case; Check address then write
          if (!target.equals(remoteAddress)) {
            throw new IllegalArgumentException("Connected address not equal to target address");
          }
          return write(src);
        }
      }

      int n = 0;
      try {
        begin();
        if (!isOpen()) return 0;
        writerThread = NativeThread.current();
        do {
          n = send(fd, src, isa);
        } while ((n == IOStatus.INTERRUPTED) && isOpen());

        synchronized (stateLock) {
          if (isOpen() && (localAddress == null)) {
            localAddress = Net.localAddress(fd);
          }
        }
        return IOStatus.normalize(n);
      } finally {
        writerThread = 0;
        end((n > 0) || (n == IOStatus.UNAVAILABLE));
        assert IOStatus.check(n);
      }
    }
  }
  private List<String> getServerInterfaces() {

    List<String> bindInterfaces = new ArrayList<String>();

    String interfaceName = JiveGlobals.getXMLProperty("network.interface");
    String bindInterface = null;
    if (interfaceName != null) {
      if (interfaceName.trim().length() > 0) {
        bindInterface = interfaceName;
      }
    }

    int adminPort = JiveGlobals.getXMLProperty("adminConsole.port", 9090);
    int adminSecurePort = JiveGlobals.getXMLProperty("adminConsole.securePort", 9091);

    if (bindInterface == null) {
      try {
        Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface netInterface : Collections.list(nets)) {
          Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
          for (InetAddress address : Collections.list(addresses)) {
            if ("127.0.0.1".equals(address.getHostAddress())) {
              continue;
            }
            if (address.getHostAddress().startsWith("0.")) {
              continue;
            }
            Socket socket = new Socket();
            InetSocketAddress remoteAddress =
                new InetSocketAddress(address, adminPort > 0 ? adminPort : adminSecurePort);
            try {
              socket.connect(remoteAddress);
              bindInterfaces.add(address.getHostAddress());
              break;
            } catch (IOException e) {
              // Ignore this address. Let's hope there is more addresses to validate
            }
          }
        }
      } catch (SocketException e) {
        // We failed to discover a valid IP address where the admin console is running
        return null;
      }
    } else {
      bindInterfaces.add(bindInterface);
    }

    return bindInterfaces;
  }
Esempio n. 23
0
 public static boolean isServer() throws Exception {
   boolean isServer = false;
   InetAddress IP = InetAddress.getLocalHost();
   try {
     if (IP.getHostAddress().toString().equals("54.186.249.201")
         || IP.getHostAddress().toString().equals("172.31.40.246")
         || IP.getHostAddress().toString().equals("128.199.237.142")
         || IP.getHostAddress().toString().equals("saracourierservice.tk")) {
       isServer = true;
     }
   } catch (Exception ex) {
     throw ex;
   }
   return isServer;
 }
Esempio n. 24
0
  private void setMailCredential(CIJob job) {
    if (debugEnabled) {
      S_LOGGER.debug("Entering Method CIManagerImpl.setMailCredential");
    }
    try {
      String jenkinsTemplateDir = Utility.getJenkinsTemplateDir();
      String mailFilePath = jenkinsTemplateDir + MAIL + HYPHEN + CREDENTIAL_XML;
      if (debugEnabled) {
        S_LOGGER.debug("configFilePath ... " + mailFilePath);
      }
      File mailFile = new File(mailFilePath);

      SvnProcessor processor = new SvnProcessor(mailFile);

      //			DataInputStream in = new DataInputStream(new FileInputStream(mailFile));
      //			while (in.available() != 0) {
      //				System.out.println(in.readLine());
      //			}
      //			in.close();

      // Mail have to go with jenkins running email address
      InetAddress ownIP = InetAddress.getLocalHost();
      processor.changeNodeValue(
          CI_HUDSONURL,
          HTTP_PROTOCOL
              + PROTOCOL_POSTFIX
              + ownIP.getHostAddress()
              + COLON
              + job.getJenkinsPort()
              + FORWARD_SLASH
              + CI
              + FORWARD_SLASH);
      processor.changeNodeValue("smtpAuthUsername", job.getSenderEmailId());
      processor.changeNodeValue("smtpAuthPassword", job.getSenderEmailPassword());
      processor.changeNodeValue("adminAddress", job.getSenderEmailId());

      // jenkins home location
      String jenkinsJobHome = System.getenv(JENKINS_HOME);
      StringBuilder builder = new StringBuilder(jenkinsJobHome);
      builder.append(File.separator);

      processor.writeStream(new File(builder.toString() + CI_MAILER_XML));
    } catch (Exception e) {
      S_LOGGER.error(
          "Entered into the catch block of CIManagerImpl.setMailCredential "
              + e.getLocalizedMessage());
    }
  }
Esempio n. 25
0
  /**
   * Konstruktor
   *
   * @param configFile Jmeno konfiguracniho souboru
   */
  public Server(String configFile) {
    setServerConfig(new ServerConfig(configFile));

    setPort(getServerConfig().getPort());
    try {
      setBindAddress(InetAddress.getByName(getServerConfig().getBindAddress()));
    } catch (UnknownHostException e) {
      System.err.println("Bind adresa neni platna!");
      System.exit(-1);
    }

    try {
      setServerSocket(new ServerSocket(getPort(), 0, getBindAddress()));
    } catch (IOException e) {
      System.err.println("Chyba startu ServerSocketu");
      System.exit(-1);
    }

    System.out.println("Server spusten");

    clients = new Hashtable<String, ServerThread>();
    boolean running = true;
    while (running) {
      try {
        accept();
      } catch (IOException e) {
        System.err.println("Chyba acceptu");
        running = false;
      }
    }
  }
  @Override
  public DatagramChannel bind(SocketAddress local) throws IOException {
    synchronized (readLock) {
      synchronized (writeLock) {
        synchronized (stateLock) {
          ensureOpen();
          if (localAddress != null) throw new AlreadyBoundException();
          InetSocketAddress isa;
          if (local == null) {
            // only Inet4Address allowed with IPv4 socket
            if (family == StandardProtocolFamily.INET) {
              isa = new InetSocketAddress(InetAddress.getByName("0.0.0.0"), 0);
            } else {
              isa = new InetSocketAddress(0);
            }
          } else {
            isa = Net.checkAddress(local);

            // only Inet4Address allowed with IPv4 socket
            if (family == StandardProtocolFamily.INET) {
              InetAddress addr = isa.getAddress();
              if (!(addr instanceof Inet4Address)) throw new UnsupportedAddressTypeException();
            }
          }
          SecurityManager sm = System.getSecurityManager();
          if (sm != null) {
            sm.checkListen(isa.getPort());
          }
          Net.bind(family, fd, isa.getAddress(), isa.getPort());
          localAddress = Net.localAddress(fd);
        }
      }
    }
    return this;
  }
Esempio n. 27
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  public static void main(String[] args) {
    int port = 5555;

    DatagramSocket socket;
    socket = null;
    try {
      socket = new DatagramSocket(port);
      socket.setBroadcast(true);
      socket.connect(InetAddress.getByName("255.255.255.255"), 5555);
    } catch (Exception e) {
      System.err.println("Connection failed. " + e.getMessage());
    }

    while (true) {
      String message = "hey";
      byte[] buf = message.getBytes();

      DatagramPacket packet = new DatagramPacket(buf, buf.length);
      try {
        socket.send(packet);
      } catch (Exception e) {
        System.err.println("Sending failed. " + e.getMessage());
      }
    }
  }
Esempio n. 28
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  /**
   * Workaround for the problem encountered in certains JDKs that a thread listening on a socket
   * cannot be interrupted. Therefore we just send a dummy datagram packet so that the thread 'wakes
   * up' and realizes it has to terminate. Should be removed when all JDKs support
   * Thread.interrupt() on reads. Uses sock t send dummy packet, so this socket has to be still
   * alive.
   *
   * @param dest The destination host. Will be local host if null
   * @param port The destination port
   */
  void sendDummyPacket(InetAddress dest, int port) {
    DatagramPacket packet;
    byte[] buf = {0};

    if (dest == null) {
      try {
        dest = InetAddress.getLocalHost();
      } catch (Exception e) {
      }
    }

    if (Trace.debug) {
      Trace.info("UDP.sendDummyPacket()", "sending packet to " + dest + ":" + port);
    }
    if (sock == null || dest == null) {
      Trace.warn(
          "UDP.sendDummyPacket()", "sock was null or dest was null, cannot send dummy packet");
      return;
    }
    packet = new DatagramPacket(buf, buf.length, dest, port);
    try {
      sock.send(packet);
    } catch (Throwable e) {
      Trace.error(
          "UDP.sendDummyPacket()",
          "exception sending dummy packet to " + dest + ":" + port + ": " + e);
    }
  }
  public Process(String name, int pid, int n) {

    this.name = name;
    this.port = Utils.REGISTRAR_PORT + pid;

    this.host = "UNKNOWN";
    try {
      this.host = (InetAddress.getLocalHost()).getHostName();

    } catch (UnknownHostException e) {
      String msg = String.format("Error: getHostName() failed at %s.", this.getInfo());
      System.err.println(msg);
      System.err.println(e.getMessage());
      System.exit(1);
    }

    this.pid = pid;
    this.n = n;

    random = new Random();

    /* Accepts connections from one of Registrar's worker threads */
    new Thread(new Listener(this)).start();
    /* Connect to registrar */
    socket = connect();
    init();
    Utils.out(pid, "Connected.");
  }
 Target(String host) {
   try {
     address = new InetSocketAddress(InetAddress.getByName(host), 80);
   } catch (IOException x) {
     failure = x;
   }
 }