lighttpd 1.4.x
https://www.lighttpd.net/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.0 KiB
51 lines
1.0 KiB
================= |
|
FastCGI Internals |
|
================= |
|
|
|
--------------- |
|
Module: fastcgi |
|
--------------- |
|
|
|
:Author: Jan Kneschke |
|
:Date: $Date: 2004/08/01 07:01:29 $ |
|
:Revision: $Revision: 1.1 $ |
|
|
|
:abstract: |
|
This is a short summary of the state-engine which is driving the FastCGI |
|
module. It describes the basic concepts and the way the different parts |
|
of the module are connected. |
|
|
|
.. meta:: |
|
:keywords: lighttpd, state-engine, 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 |
|
|
|
.. image:: fastcgi-state.png |
|
|
|
Delays |
|
------ |
|
|
|
connect, write and read may need to wait for an fdevent. That's the reason |
|
for the loop in the state-diagram.
|
|
|