Package org.ws4d.java.communication.connection.udp

UDP Client and Server implementation.

See: Description

Interface Summary

Interface	Description
DatagramSocket	Datagram socket for UDP connections.
UDPDatagramHandler

Class Summary

Class	Description
Datagram	This class is needed for compatibility reasons with the J2ME Datagram class.
DatagramInputStream	Datagram stream.
DatagramSocketFactory	Creates server and client sockets.
DatagramSocketTimer
PlatformDatagramSocketFactory	Creates server and client sockets.
SEDatagramSocket	DatagramSocket wrapper for SE.
SortedIntArraySet
UDPClient	UDP client which allows the sending of UDP datagram packets.
UDPListener	UDP listener which allows to listen for incoming UDP packets.
UDPServer	UPD server .

Package org.ws4d.java.communication.connection.udp Description

UDP Client and Server implementation.

The UDP server's (UDPServer)open and close methods open/close a datagram socket (DatagramSocket interface. Implementing classes should be platform specific) for a given address and port, which will start a UDP Listener. This UDP listener (UDPListener) therefore listens to this given address and port for incoming datagram packets, which it then passes on the the UDP Datagram Handler (UDPDatagramHandler) which will open each datagram packet in a separate thread. A datagram packet is modelised by the Datagram class (containing information about the address, the port, the data socket from which it stems, and the content length.). The UDP Client )UDPClient uses its given address and port to create a datagram socket, to in turn be able to send messages.