The document discusses socket programming in Java. It covers key concepts like layers of protocols, ports, the client-server model, and socket classes. Example code is provided to demonstrate how to create simple client and server applications using sockets to connect two processes and exchange data between them. The examples show how to bind sockets, send/receive data over input/output streams, and handle multiple concurrent connections by spawning new threads.

1. Chapter 3 Socket Programming Lecturer: Sivadon Chaisiri Mathematics, Statistics and Computer Department Faculty of Science, Ubon Rajathanee University

2. Layered Protocols

3. Metadata in a Messages

5. TCP/IP four-layer model

8. Ports and Applications

9. The Client-Server Model

11. Endpoint-to-Endpoint Communications

14. Socket and ServerSocket

15. Streams More stream classes InputStream : DataInputStream, ObjectInputStream OutputStream : DataOutputStream, ObjectOutputStream

16. Filters of Streams

26. The End Any Questions?