Async ISO8583 client-server mock up

Inspired from:

• https://alovak.com/2024/08/27/mastering-iso-8583-message-networking-with-golang/

but in python

Logics

• CLIENT established a socket connection to an ISO8583-SERVER
• Multiple HTTP calls are sent to the CLIENT and served by fastAPI http server
• FastAPI HTTP server's handler then makes a socket call to the ISO8583-SERVER
• The ISO8583-SERVER sends response via the socket/buffer to the CLIENT
• The CLIENT then reads the buffer and inserts it into a safe thread map/dict
• The fastAPI handler then read from the safe threaded map/dict by matching the STAN (element 11)
• The safe-threaded map will schedule to clean up any expired map/dict
• If CLIENT gets disconnected, it will retry to reconnect

ToDo:

• Use Redis instead of internal map

How To Run

In cmd

change the PYTHONPATH to whichever directory you are working on

  make run-server

  make run-client 

Using Docker

  docker-compose up -d

Test

  curl --location 'http://localhost:8000/echo?value=080080200000000000000400000000000000RANDOM301'

Response

{
    "sent": "080080200000000000000400000000000000423482301",
    "resp": "08108020000002000000040000000000000042348200301"
}

Load Test

Reference:

1. https://github.com/Seedstars/python-iso8583