DatagramSocketYou use DatagramSocket to send and receive DatagramPackets. Consult its DatagramPacket Javadoc for full details. In addition, the DatagramPacket provides setter and getter methods for address, data and port number. DatagramPacket(byte buf, int offset, int length, SocketAddress address).DatagramPacket(byte buf, int offset, int length).There are also other constructors that allow you to specify the offset in the byte array, as well as using a SocketAddress: The first constructor is used to create a DatagramPacket to be received.The second constructor creates a DatagramPacket to be sent, so you need to specify the address and port number of the destination host.The parameter length specifies the amount of data in the byte array to be used, usually is the length of the array ( buf.length). DatagramPacket(byte buf, int length, InetAddress address, int port)Īs you can see, the data must be in the form of an array of bytes.And in Java, DatagramPacket represents a datagram.You can create a DatagramPacket object by using one of the following constructors: A datagram is an independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed. DatagramPacketIn UDP’s terms, data transferred is encapsulated in a unit called datagram. DatagramPacket is a data container and DatagramSocket is a mechanism to send and receive DatagramPacket s.
DatagramPacket and DatagramSocket are the two main classes that are used to implement a UDP client/server application.
#Artmatic app how to
In this Java Network programming tutorial, you will learn how to code a client/server application based on UDP protocol.First, let’s see how Java Network API is designed to support development of network applications that make use of UDP.
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