Examples of java.net.DatagramSocket.receive()

java.net.DatagramSocket.receive()
Receives a datagram packet from this socket. When this method returns, the DatagramPacket's buffer is filled with the data received. The datagram packet also contains the sender's IP address, and the port number on the sender's machine.
This method blocks until a datagram is received. The length field of the datagram packet object contains the length of the received message. If the message is longer than the packet's length, the message is truncated.
If there is a security manager, a packet cannot be received if the security manager's checkAccept method does not allow it. @param p the DatagramPacket into which to placethe incoming data. @exception IOException if an I/O error occurs. @exception SocketTimeoutException if setSoTimeout was previously calledand the timeout has expired. @exception PortUnreachableException may be thrown if the socket is connectedto a currently unreachable destination. Note, there is no guarantee that the exception will be thrown. @exception java.nio.channels.IllegalBlockingModeException if this socket has an associated channel, and the channel is in non-blocking mode. @see java.net.DatagramPacket @see java.net.DatagramSocket @revised 1.4 @spec JSR-51

      socket = new DatagramSocket();
      broadcast(udpPort, socket);
      socket.setSoTimeout(timeoutMillis);
      DatagramPacket packet = new DatagramPacket(new byte[0], 0);
      try {
        socket.receive(packet);
      } catch (SocketTimeoutException ex) {
        if (INFO) info("kryonet", "Host discovery timed out.");
        return null;
      }
      if (INFO) info("kryonet", "Discovered server: " + packet.getAddress());

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      broadcast(udpPort, socket);
      socket.setSoTimeout(timeoutMillis);
      while (true) {
        DatagramPacket packet = new DatagramPacket(new byte[0], 0);
        try {
          socket.receive(packet);
        } catch (SocketTimeoutException ex) {
          if (INFO) info("kryonet", "Host discovery timed out.");
          return hosts;
        }
        if (INFO) info("kryonet", "Discovered server: " + packet.getAddress());

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    DatagramSocket socket = getSocket();
    for (int i = 1; i <= getRetryCount(); i++) {
      try {
        socket.send(packetOut);
        socket.receive(packetIn);
        return makeRadiusPacket(packetIn, request);
      } catch (IOException ioex) {
        if (i == getRetryCount()) {
          if (logger.isErrorEnabled()) {
            if (ioex instanceof SocketTimeoutException)

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       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("Date of the Moment: " + received);

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        // receive and send back some message
        for (int i = 0; i < CLIENT_COUNT; i++) {
            byte[] receiveData = new byte[1024];
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
            serverSocket.receive(receivePacket);


            String sentence = new String(receivePacket.getData());
            LOG.info("RECEIVED  :" + sentence);


            InetAddress IPAddress = receivePacket.getAddress();

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      appender.close();
      String[] retval = new String[packets];
      byte[] buf = new byte[1000];
      for(int i = 0; i < packets; i++) {
          DatagramPacket p = new DatagramPacket(buf, 0, buf.length);
          ds.receive(p);
          retval[i] = new String(p.getData(), 0, p.getLength());
      }
      ds.close();
      return retval;
    }

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      appender.close();
      String[] s = new String[3];
      byte[] buf = new byte[1000];
      for(int i = 0; i < 3; i++) {
          DatagramPacket p = new DatagramPacket(buf, 0, buf.length);
          ds.receive(p);
          s[i] = new String(p.getData(), 0, p.getLength());
      }
      ds.close();
      assertEquals("<14><!DOCTYPE", s[0].substring(0,13));
      assertEquals("<14></table>", s[2].substring(0,12));

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      appender.close();
      String[] s = new String[8];
      byte[] buf = new byte[1200];
      for(int i = 0; i < 8; i++) {
          DatagramPacket p = new DatagramPacket(buf, 0, buf.length);
          ds.receive(p);
          assertTrue(p.getLength() <= 1024);
          s[i] = new String(p.getData(), 0, p.getLength());
      }
      ds.close();
      StringBuffer rcvbuf = new StringBuffer(s[0]);

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        DatagramSocket udpSocket = new DatagramSocket(server.addr.getPort());
        LOG.info("In MockServer");
        mockLatch.countDown();
        Vote current = new Vote(2, 1);
        for (int i=0;i<2;++i) {
            udpSocket.receive(packet);
            responseBuffer.rewind();
            LOG.info("Received " + responseBuffer.getInt() + " " + responseBuffer.getLong() + " " + responseBuffer.getLong());
            LOG.info("From " + packet.getSocketAddress());
            responseBuffer.clear();
            responseBuffer.getInt(); // Skip the xid

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                    }


                    try {
                        s.send(requestPacket);
                        responsePacket.setLength(responseBytes.length);
                        s.receive(responsePacket);
                        if (responsePacket.getLength() != responseBytes.length) {
                            LOG.error("Got a short response: "
                                    + responsePacket.getLength());
                            continue;
                        }

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