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Annotation of embedaddon/lighttpd/doc/outdated/fastcgi-state.txt, revision 1.1

1.1     ! misho       1: =================
        !             2: FastCGI Internals
        !             3: =================
        !             4: 
        !             5: ---------------
        !             6: Module: fastcgi
        !             7: ---------------
        !             8: 
        !             9: :Author: Jan Kneschke
        !            10: :Date: $Date: 2004/08/01 07:01:29 $
        !            11: :Revision: $Revision: 1.1 $
        !            12: 
        !            13: :abstract:
        !            14:   This is a short summary of the state-engine which is driving the FastCGI
        !            15:   module. It describes the basic concepts and the way the different parts
        !            16:   of the module are connected.
        !            17: 
        !            18: .. meta::
        !            19:   :keywords: lighttpd, state-engine, fastcgi
        !            20: 
        !            21: .. contents:: Table of Contents
        !            22: 
        !            23: Description
        !            24: ===========
        !            25: 
        !            26: States
        !            27: ------
        !            28: 
        !            29: The state-engine is currently made of 6 states which are walk-through on
        !            30: the way each connection.
        !            31: 
        !            32: :init:
        !            33:   prepare fastcgi-connection
        !            34: :connect:
        !            35:   waiting for a connection
        !            36: :prepwrite:
        !            37:   build the fastcgi-request
        !            38: :write:
        !            39:   write the fastcgi-request to the network
        !            40: :read:
        !            41:   read fastcgi-response from network and push it to the write-queue
        !            42: :close:
        !            43:   terminate the connection
        !            44: 
        !            45: .. image:: fastcgi-state.png
        !            46: 
        !            47: Delays
        !            48: ------
        !            49: 
        !            50: connect, write and read may need to wait for an fdevent. That's the reason
        !            51: for the loop in the state-diagram.