FastCGI Internals¶

• Table of contents
• FastCGI Internals
  • Description
    • States
    • Delays

Description¶

States¶

The FastCGI state machine currently consists of six states,
each of which is visited in turn as a connection is processed.

• init
  prepare for a connection
• connect
  wait for a connection
• prepwrite
  build the request
• write
  write the request to the network
• read
  read the response from network and push it to the write queue
• close
  terminate the connection

Delays¶

The connect, write, and read states may need to wait for an fdevent.
The delays are represented by loops in the state diagram below.