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java.net
Class DatagramSocket

java.lang.Object
  extended by java.net.DatagramSocket
Direct Known Subclasses:
MulticastSocket
See Also:
Top Examples, Source Code, DatagramPacket, DatagramChannel
public void bind(SocketAddress addr)
          throws SocketException
See Also:
IllegalArgumentException, SecurityException
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public void close()
See Also:
SocketException
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public void connect(InetAddress address,
                    int port)
See Also:
receive(java.net.DatagramPacket), send(java.net.DatagramPacket), disconnect(), SecurityException, IllegalArgumentException
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public void connect(SocketAddress addr)
             throws SocketException
See Also:
connect(java.net.InetAddress, int), IllegalArgumentException
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public DatagramSocket()
               throws SocketException
See Also:
SecurityManager.checkListen(int), SecurityException
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public DatagramSocket(int port)
               throws SocketException
See Also:
SecurityManager.checkListen(int), SecurityException
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public DatagramSocket(int port,
                      InetAddress laddr)
               throws SocketException
See Also:
SecurityManager.checkListen(int), SecurityException
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protected DatagramSocket(DatagramSocketImpl impl)
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public DatagramSocket(SocketAddress bindaddr)
               throws SocketException
See Also:
SecurityManager.checkListen(int), SecurityException
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public void disconnect()
See Also:
connect(java.net.InetAddress, int)
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public boolean getBroadcast()
                     throws SocketException
See Also:
setBroadcast(boolean)
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public DatagramChannel getChannel()
See Also:
DatagramChannel.open
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public InetAddress getInetAddress()
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public InetAddress getLocalAddress()
See Also:
SecurityManager.checkConnect(java.lang.String, int)
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public int getLocalPort()
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public SocketAddress getLocalSocketAddress()
See Also:
bind(SocketAddress), getLocalPort(), getLocalAddress()
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public int getPort()
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public int getReceiveBufferSize()
                         throws SocketException
See Also:
setReceiveBufferSize(int)
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public SocketAddress getRemoteSocketAddress()
See Also:
connect(SocketAddress), getPort(), getInetAddress()
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public boolean getReuseAddress()
                        throws SocketException
See Also:
setReuseAddress(boolean)
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public int getSendBufferSize()
                      throws SocketException
See Also:
setSendBufferSize(int)
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public int getSoTimeout()
                 throws SocketException
See Also:
setSoTimeout(int)
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public int getTrafficClass()
                    throws SocketException
See Also:
setTrafficClass(int)
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[1310]Different behaviour of getTrafficClass on different platform
By Matt Crawford on 2005/02/17 15:53:24  Rate
Under J2SE 1.4.2, this call is ignored on some Linux systems and honored on others, even with what seem to be very similar kernel version. On MacOS 10.3 it throws a java.net.SocketException: Invalid argument. 
 
public boolean isBound()
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public boolean isClosed()
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public boolean isConnected()
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public void receive(DatagramPacket p)
             throws IOException
See Also:
DatagramSocket, IllegalBlockingModeException, PortUnreachableException, SocketTimeoutException
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public void send(DatagramPacket p)
          throws IOException
See Also:
SecurityManager.checkConnect(java.lang.String, int), SecurityManager.checkMulticast(InetAddress), IllegalBlockingModeException, PortUnreachableException, SecurityException
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[1427]Sent data over UDP socket
By born2snipe on 2005/05/13 16:28:12  Rate
// you must know your host IP and the port of the packets need to be sent 
 InetAddress host = InetAddress.getByName ( "http://www.kickjava.com" ) ; 
 int port = 27015; 
  
  
 // data that you want sent to the host 
 byte buf [  ]  = new byte [ 1024 ] ; 
 DatagramPacket packet = new DatagramPacket ( buf,buf.length,host,port ) ; 
  
  
 // your UDP socket that will send the packet 
 DatagramSocket udp = new DatagramSocket (  ) ; 
  
  
 // send the packet to the host  ( throws IOException )  
 upd.send ( packet ) ;
public void setBroadcast(boolean on)
                  throws SocketException
See Also:
getBroadcast()
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public static void setDatagramSocketImplFactory(DatagramSocketImplFactory fac)
                                         throws IOException
See Also:
SecurityManager.checkSetFactory(), DatagramSocketImplFactory.createDatagramSocketImpl(), SecurityException, SocketException
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public void setReceiveBufferSize(int size)
                          throws SocketException
See Also:
getReceiveBufferSize(), IllegalArgumentException, receive(DatagramPacket)
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public void setReuseAddress(boolean on)
                     throws SocketException
See Also:
isClosed(), isBound(), bind(SocketAddress), getReuseAddress(), MulticastSocket
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public void setSendBufferSize(int size)
                       throws SocketException
See Also:
getSendBufferSize(), IllegalArgumentException, send(DatagramPacket)
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public void setSoTimeout(int timeout)
                  throws SocketException
See Also:
getSoTimeout()
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public void setTrafficClass(int tc)
                     throws SocketException
See Also:
getTrafficClass()
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