Do you wonder how to write a program that accepts incoming messages with a network socket? Have you ever just wanted your own Web server to experiment and learn with?
Have you ever wondered how a Web server actually works? Experiment with nweb — a simple Web server with only 200 lines of C source code. In this article, Nigel Griffiths provides a copy of this Web server and includes the source code as well. You can see exactly what it can and can’t do.
Well, look no further — nweb is what you need. This is a simple Web server that has only 200 lines of C source code. It runs as a regular user and can’t run any server-side scripts or programs, so it can’t open up any special privileges or security holes.
This article covers:
- What the nweb server program offers
- Summary of C functions features in the program
- Pseudo code to aid understanding of the flow of the code
- Network socket system calls used and other system calls
- How the client side operates
- C source code
nweb only transmits the following types of files to the browser :
- Static Web pages with extensions .html or .htm
- Graphical images such as .gif, .png, .jgp, or .jpeg
- Compressed binary files and archives such as .zip, .gz, and .tar
- If your favorite static file type is not in this list, you can simply add it in the source code and recompile to allow it.
Read more at IBM developerworks…
|Category||List of Unix and Linux commands|
|Firewall||CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04|
|Network Utilities||dig • host • ip • nmap|
|OpenVPN||CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04|
|Package Manager||apk • apt|
|Processes Management||bg • chroot • cron • disown • fg • jobs • killall • kill • pidof • pstree • pwdx • time|
|Searching||grep • whereis • which|
|User Information||groups • id • lastcomm • last • lid/libuser-lid • logname • members • users • whoami • who • w|
|WireGuard VPN||CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04|