This class represents a socket for sending and receiving datagram packets.
A datagram socket is the sending or receiving point for a packet delivery service. Each packet sent or received on a datagram socket is individually addressed and routed. Multiple packets sent from one machine to another may be routed differently, and may arrive in any order.
Where possible, a newly constructed DatagramSocket has the
SO_BROADCAST socket option enabled so as
to allow the transmission of broadcast datagrams. In order to receive
broadcast packets a DatagramSocket should be bound to the wildcard address.
In some implementations, broadcast packets may also be received when
a DatagramSocket is bound to a more specific address.
Example:
DatagramSocket s = new DatagramSocket(null);
s.bind(new InetSocketAddress(8888));
Which is equivalent to:
DatagramSocket s = new DatagramSocket(8888);
Both cases will create a DatagramSocket able to receive broadcasts on
UDP port 8888.
implements
java.net.DatagramPacket, java.nio.channels.DatagramChannel