An Introduction to Socket Programming

An Introduction to Socket Programming

(by) Reg Quinton

These course notes are directed at Unix application programmers who want to develop client/server applications in the TCP/IP domain (with some hints for those who want to write UDP/IP applications). Since the Berkeley socket interface has become something of a standard these notes will apply to programmers on other platforms.
Fundamental concepts are covered including network addressing, well known services, sockets and ports. Sample applications are examined with a view to developing similar applications that serve other contexts. Our goals are

• to develop a function, tcpopen(server,service), to connect to service.
• to develop a server that we can connect to.

This course requires an understanding of the C programming language and an appreciation of the programming environment (ie. compilers, loaders, libraries, Makefiles and the RCS revision control system). If you want to know about socket programming with perl(1) then see below but you should read everything first.

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