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Programming Linux sockets, Part 1: Using TCP/IP

Creating an echo server and client

David Mertz (mertz@gnosis.cx), Developer, Gnosis Software
David Mertz
David Mertz has been writing the developerWorks columns Charming Python and XML Matters since 2000. Check out his book Text Processing in Python. For more on David, see his personal Web page.

Summary:  This introductory-level tutorial shows how to begin programming with sockets. Focusing on C and Python, it guides you through the creation of an echo server and client, which connect over TCP/IP. Fundamental network, layer, and protocol concepts are described, and sample source code abounds.

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Date:  28 Oct 2003
Level:  Introductory
PDF:  A4 and Letter (85 KB | 17 pages)Get Adobe® Reader®

Activity:  27951 views
Comments:  

Summary

The server and client presented in this tutorial are simple, but they show everything essential to writing TCP sockets applications. If the data transmitted is more complicated, or the interaction between peers (client and server) is more sophisticated in your application, that is just a matter of additional application programming. The data exchanged will still follow the same pattern of connect() and bind(), then send() and recv().

One thing this tutorial did not get to, except in brief summary at the start, is usage of UDP sockets. TCP is more common, but it is important to also understand UDP sockets as an option for your application. Part 2 of this tutorial series looks at UDP, as well as implementing sockets applications in Python, and some other intermediate topics.

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static.content.url=http://www.ibm.com/developerworks/js/artrating/
SITE_ID=1
Zone=Linux
ArticleID=133074
TutorialTitle=Programming Linux sockets, Part 1: Using TCP/IP
publish-date=10282003
author1-email=mertz@gnosis.cx
author1-email-cc=

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