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

            fail("should throw IllegalBlockingModeException");
        } catch (IllegalBlockingModeException e) {
            // expected
        }
        try {
            socket.receive(null);
            fail("should throw IllegalBlockingModeException");
        } catch (IllegalBlockingModeException e) {
            // expected
        }
    }

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        for (int i = 0; i < 10; i++) {
            fillWriteBuffer(writeBuf, i);
            client.send(wp);


            client.receive(rp);
            assertEquals(writeBuf.length, rp.getLength());
            assertEquals(writeBuf, readBuf);
        }


        try {

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            assertEquals(writeBuf.length, rp.getLength());
            assertEquals(writeBuf, readBuf);
        }


        try {
            client.receive(rp);
            fail("Unexpected incoming data.");
        } catch (SocketTimeoutException e) {
        }


        client.close();

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    {
      while (isStarted())
      {
        p.setData( buf.getBuf() );
        
        s.receive( p );
        
        buf.setIndex( 0 );
        buf.setLength( p.getLength() );
        
        if (s.isConnected())

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        Thread.sleep(1000);


        byte[] buf = new byte[128];
        DatagramPacket receive = new DatagramPacket(buf, buf.length, address, getPort());
        LOG.debug("+++ Receiveing data +++");
        socket.receive(receive);


        socket.close();


        return new String(receive.getData(), 0, receive.getLength());
    }

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          IPAddress, port);
      socket.send(sendPacket);
      socket.setSoTimeout(500);
      DatagramPacket receivePacket = new DatagramPacket(receiveData,
          receiveData.length);
      socket.receive(receivePacket);
  
      // Check reply status
      XDR xdr = new XDR(Arrays.copyOfRange(receiveData, 0,
          receivePacket.getLength()));
      RpcReply reply = RpcReply.read(xdr);

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            final DatagramPacket dp = new DatagramPacket(buf, buf.length);


            System.out.println("Starting to listen for netbios messages now...");


            for (int i = 0; i < 5; i++) {
                socket.receive(dp);
                System.out.println("Received datagram packet from " + dp.getAddress() + ":" +
                        dp.getPort());
            }


            System.out.println("I'm stopping now");

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                dhcpSocket.setBroadcast(true);


                while (true) {
                    byte[] buf = new byte[bufferSize];
                    DatagramPacket dgp = new DatagramPacket(buf, buf.length);
                    dhcpSocket.receive(dgp);
                    // _executor.execute(new DhcpPacketParser(buf));
                }
            } catch (IOException e) {
                s_logger.debug(e.getMessage());
            }

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                System.err.println(exc);
            }
            while (true) {
                DatagramPacket datagram = new DatagramPacket(new byte[1024], 1024);
                try {
                    socket.receive(datagram);
                } catch (IOException exc) {
                }
                String data = new String(datagram.getData());
                System.out.println(data.trim());
            }

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            DatagramPacket resp = new DatagramPacket(buf, buf.length);


            int bytesRead = BUF_SIZE;
            while (bytesRead == BUF_SIZE) {
                socket.receive(resp);


                bytesRead = resp.getLength();
                out.write(buf, resp.getOffset(), bytesRead);
            }
            DerInputStream in = new DerInputStream(out.toByteArray());

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