Better tools let you build better solutions

Why use C rather than a more 'modern' language for G-WAN?

1. If you know C, how many other languages do you need to learn*?
2. ANSI C is stable, efficient and available on all hardware platforms.
3. C can be as safe as any other language (see the 'crash.c' servlet).

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#include "gwan.h" // G-WAN exported functions

int main(int argc, char *argv[]) 
{
   xbuf_t reply;            // create a dynamic buffer
   get_reply(argv, &reply); // setup the server reply

   char *name = 0;          // get an URL parameter
   get_arg("name=", &name, argc, argv);

   xbuf_xcat(&reply, "Hello %s", // format a safe reply
             escape_html(name, name, 20) ? name : "you");

   set_reply(argv, &reply); // update the server reply
   return(200);             // HTTP status (200:'OK')
}

The best way to understand G-WAN's capabilities is to play with it: just click on the links below (press the browser's 'back' button to return to this page):

servlet description	run	src
'Hello World' sample (used to benchmark servlets)	[run]	[src]
Render Area/Bar/Dot/Line/Pie/Ring Charts in GIF pictures	[run]	[src]
Render the Mandelbrot Set in a 800x800 GIF picture	[run]	[src]
Link the SQLite Library to a C servlet (#pragma link/include)	[run]	[src]
(GET or POST) AJAX form to calculate Loan Payments	[run]	[src]
(GET or POST) Contact Form to get email from users	[run]	[src]
Query the ECB to get 34 Currency Exchange Rates	[run]	[src]
Attack G-WAN with hundreds of Malicious URIs (be creative)	[run]	[src]
Make G-WAN Crash (it won't) and get an useful crash report	[run]	[src]

[*] C is a 40-year-old free standard which offers more source code than all other languages... which have all been written in C (probably for a reason).

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