CGI¶
CGI is a very simple process-based protocol that uses commonly available process resources:
Warning
The CGI protocol expects the response to be written in the standard output: writting there will most surely corrupt the response.
The VSGI.CGI namespace provides a basis for its derivatives protocols such
as FastCGI and SCGI and can be used along with any HTTP server.
The interpretation of the environment prioritize the CGI/1.1 specification
while providing fallbacks with values we typically found like REQUEST_URI.
Since a process is spawned per request and exits when the latter finishes, scheduled asynchronous tasks will not be processed.
If your task involve the Request or Response in its callback, the connection and thus the process will be kept alive as long as necessary.
public class App : Handler {
public override bool handle (Request req, Response res) {
Timeout.add (5000, () => {
res.expand_utf8 ("Hello world!");
return Source.REMOVE;
});
return true;
}
}
Server.new ("cgi", handler: new App ()).run ();
lighttpd¶
There is an example in examples/cgi providing a sample lighttpd
configuration file. Once launched, the application can be accessed at the
following address: http://127.0.0.1:3003/cgi-bin/app/.
lighttpd -D -f examples/cgi/lighttpd.conf