Lighttpd

{{{
#!rst =================
FastCGI Internals =================

---------------
Module: fastcgi
---------------

.. contents:: Table of Contents

Description ===========

States
------

The state-engine is currently made of 6 states which are walk-through on
the way each connection.

:init:
prepare fastcgi-connection
:connect:
waiting for a connection
:prepwrite:
build the fastcgi-request
:write:
write the fastcgi-request to the network
:read:
read fastcgi-response from network and push it to the write-queue
:close:
terminate the connection

Delays
------

connect, write and read may need to wait for an fdevent. That's the reason
for the loop in the state-diagram.

}}} {{{
#!graphviz
digraph fcgistate {
init -> connect -> prepwrite -> write -> read -> close
write -> write
read -> read
connect -> connect
}
}}}