Java Code Examples for java.net.DatagramSocket#isConnected()
The following examples show how to use
java.net.DatagramSocket#isConnected() .
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Example 1
Source File: PortScanUDP.java From HttpInfo with Apache License 2.0 | 6 votes |
public static PortBean.PortNetBean scanAddress(InetAddress ia, int portNo, int timeoutMillis) { PortBean.PortNetBean portNetBean = new PortBean.PortNetBean(); Long time = System.currentTimeMillis(); try { byte[] bytes = new byte[128]; DatagramPacket dp = new DatagramPacket(bytes, bytes.length); DatagramSocket ds = new DatagramSocket(); ds.setSoTimeout(timeoutMillis); ds.connect(ia, portNo); ds.send(dp); ds.isConnected(); ds.receive(dp); ds.close(); portNetBean.setConnected(true); } catch (SocketTimeoutException e) { } catch (Exception ignore) { } portNetBean.setPort(portNo); portNetBean.setDelay(System.currentTimeMillis() - time); return portNetBean; }
Example 2
Source File: PortScanUDP.java From AndroidNetworkTools with Apache License 2.0 | 6 votes |
/** * Check if a port is open with UDP, note that this isn't reliable * as UDP will does not send ACKs * * @param ia - address to scan * @param portNo - port to scan * @param timeoutMillis - timeout * @return - true if port is open, false if not or unknown */ public static boolean scanAddress(InetAddress ia, int portNo, int timeoutMillis) { try { byte[] bytes = new byte[128]; DatagramPacket dp = new DatagramPacket(bytes, bytes.length); DatagramSocket ds = new DatagramSocket(); ds.setSoTimeout(timeoutMillis); ds.connect(ia, portNo); ds.send(dp); ds.isConnected(); ds.receive(dp); ds.close(); } catch (SocketTimeoutException e) { return true; } catch (Exception ignore) { } return false; }
Example 3
Source File: UDPTransport.java From RipplePower with Apache License 2.0 | 5 votes |
public UDPTransport(DatagramSocket socket, int mtu) throws IOException { if (!socket.isBound() || !socket.isConnected()) { throw new IllegalArgumentException("'socket' must be bound and connected"); } this.socket = socket; // NOTE: As of JDK 1.6, can use NetworkInterface.getMTU this.receiveLimit = mtu - MIN_IP_OVERHEAD - UDP_OVERHEAD; this.sendLimit = mtu - MAX_IP_OVERHEAD - UDP_OVERHEAD; }
Example 4
Source File: UDPChecker.java From pinpoint with Apache License 2.0 | 5 votes |
@Override protected boolean check(InetSocketAddress address) throws IOException { DatagramSocket socket = null; try { socket = createSocket(address); return socket.isConnected(); } catch (IOException e) { e.printStackTrace(); } finally { IOUtils.closeQuietly(socket); } return false; }
Example 5
Source File: UDPTransport.java From ripple-lib-java with ISC License | 5 votes |
public UDPTransport(DatagramSocket socket, int mtu) throws IOException { if (!socket.isBound() || !socket.isConnected()) { throw new IllegalArgumentException("'socket' must be bound and connected"); } this.socket = socket; // NOTE: As of JDK 1.6, can use NetworkInterface.getMTU this.receiveLimit = mtu - MIN_IP_OVERHEAD - UDP_OVERHEAD; this.sendLimit = mtu - MAX_IP_OVERHEAD - UDP_OVERHEAD; }
Example 6
Source File: UdpClient.java From mts with GNU General Public License v3.0 | 4 votes |
public void run() { try { DatagramSocket datagramSocket = new DatagramSocket(0/*(int) UdpTest.SERVER_PORT + 1*/, Inet4Address.getByName(UdpTest.SERVER_HOST)); //DatagramSocket datagramSocket = new DatagramSocket(null); // null->unbound System.out.println("UdpClient: client ready"); boolean connect = false; // true ; "connect�" ou non byte[] data = new byte[(int)UdpTest.MSG_SIZE]; for(int i=0; i<data.length; i++) { data[i] = (byte)i;// 0; } DatagramPacket datagramPacket = new DatagramPacket(data,data.length,Inet4Address.getByName(UdpTest.SERVER_HOST),(int) UdpTest.SERVER_PORT); //DatagramPacket datagramPacket = new DatagramPacket(data,data.length,Inet4Address.getByName(UdpTest.SERVER_HOST),3333); //DatagramPacket datagramPacket = new DatagramPacket(data,data.length); System.out.println("UdpClient: data initialized"); if (connect){ datagramSocket.connect(Inet4Address.getByName(UdpTest.SERVER_HOST),(int) UdpTest.SERVER_PORT); if (datagramSocket.isConnected()) System.out.println("UdpClient: datagramSocket connected"); } UdpTest.start = System.currentTimeMillis(); //for(int i=0; i<UdpTest.MSG_NUMBER; i++) { //System.out.println( "sending: " + i); //for(int j=0; j<data.length; j++) // System.out.print(datagramPacket.getData()[j]+", "); //System.out.println( ""); System.out.println("client: localport :"+datagramSocket.getLocalPort()); datagramSocket.send(datagramPacket); // le send System.out.println("client: localport :"+datagramSocket.getLocalPort()); if(datagramPacket.getLength() != UdpTest.MSG_SIZE) System.out.println(datagramPacket.getLength() + " != " +UdpTest.MSG_SIZE); UdpTest.total_sent ++; } datagramSocket.receive(datagramPacket); System.out.println("client: portsource paquet recu :"+ datagramPacket.getPort()); UdpTest.end = System.currentTimeMillis(); } catch(Exception e) { e.printStackTrace(); } }