Download

Software is getting slower more rapidly than hardware becomes faster. Wirth's Law

Installation

To download, install (and optimally configure) G-WAN:

 wget http://gwan.com/archives/gwan_linux64-bit.tar.bz2
 tar -xjf gwan_linux64-bit.tar.bz2
 cd gwan_linux64-bit
 sudo ./gwan                       (./gwan -h for help)

Then, type http://localhost:8080/ in your Web browser to play with the provided gwan/.../csp examples, such as:

AJAX forms (contact, loan, etc.)
Caching (using G-WAN's wait-free integrated cache)
G-WAN wait-free Key-Value store, SQLite, Tokyo Cabinet (all benchmarked)
Web beacon (1x1 transparent pixel served at the speed of light say users)
JSON (serialization and de-serialization, benchmarked)
Chaptchas (easy for humans, hard for machines)
Charts (area, bar, dot, line, pie, ring - using various styles)
GIF fractals (ultra-fast in-memory GIF I/O)
Currency conversions (using the European Central Bank rates)
Data URIs (inlining images in HTML replies)
HTTP headers (custom, without, automatically generated)
Redirections (conditional or static)
Crash reports (caught in libc, C scripts and G-WAN calls)
Server report (formatted in ASCII or HTML)

The manual documents server usage, basic and advanced functions and features like G-WAN handlers (which require 10 to 20x less code than Apache, Lighttpd or Nginx modules).

To Upgrade G-WAN: (a) copy the ./include files and the new gwan executable from the archive and then (b) run G-WAN once without the -r switch (daemon mode) to make sure that all your servlets and handlers compile without modifications.