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Learning Network Programming with Java

You're reading from   Learning Network Programming with Java Harness the hidden power of Java to build network-enabled applications with lower network traffic and faster processes

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Product type Paperback
Published in Dec 2015
Publisher Packt
ISBN-13 9781785885471
Length 292 pages
Edition 1st Edition
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Author (1):
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Richard M. Reese Richard M. Reese
Author Profile Icon Richard M. Reese
Richard M. Reese
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Table of Contents (11) Chapters Close

Preface 1. Getting Started with Network Programming FREE CHAPTER 2. Network Addressing 3. NIO Support for Networking 4. Client/Server Development 5. Peer-to-Peer Networks 6. UDP and Multicasting 7. Network Scalability 8. Network Security 9. Network Interoperability Index

Channel support for UDP


The DatagramChannel class provides additional support for UDP. It can support nonblocking interchanges. The DatagramChannel class is derived from the SelectableChannel class that makes multithreaded application easier. We will examine its use in Chapter 7, Network Scalability.

The DatagramSocket class binds a channel to a port. After this class is used, it is no longer used directly. Using the DatagramChannel class means, we do not have to use datagram packets directly. Instead, data is transferred using an instance of the ByteBuffer class. This class provides several convenient methods to access its data.

To demonstrate the use of the DatagramChannel class, we will develop an echo server and client application. The server will wait for a message from a client, and then send it back to the client.

The UDP echo server application

The UDP echo server application declaration follows and uses port 9000. In the main method a try-with-resources block opens the channel and...

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