This project implements an HTTP server using TCP and UDP that performs arithmetic calculations and a client that sends requests from an input file.

I implemented a reliable TCP server, a reliable UDP server and an unreliable UDP server that drops the connection with certain probability. The server accepts or rejects a request based on the syntax and returns the calculation result. The client tries to re-establish a connection if the server does not respond until a certain timeout threshold.

All communications between the server and the client are output to the terminal.

The server accepts four binary arithmetic operations, +, -, *, / in prefix (Polish) notation and returns an HTTP 200 status with the result. Only integers are allowed. The server rejects the request and returns a HTTP 406 Not Acceptable status if the expression is invalid.

To run a reliable TCP server

python TCP-Server.py

To run a reliable TCP client reading from a text file where each operation is separated by line breaks

python TCP-Client.py [input-file]

To run a reliable UDP server

python UDP-Server.py

To run a reliable UDP client reading from a text file

python UDP-Client.py [input-file]

To run a unreliable UDP server with probability between 0.0 and 1.0 of dropping a packet

python UDP-unreliable-Server.py [probability]

To run a reliable UDP client reading from a text file

python UDP-unreliable-Client.py [input-file]