UDPShield

Overview

Description

Features

• Parsing command-line arguments
• Communication via UDP sockets
• Using a "connected" UDP socket, to send() and recv()
• Conversion between host byte order and network byte order for multi-byte fields.
• Timers (sender only)
• Multi-threading (sender only)
• Simple logging

Usage

1. Run the sender program:

   $ python3 sender.py sender_port receiver_port txt_file_to_send max_win rto flp rlp

   This will invoke the sender to send a SYN segment to establish a 2-way-connection to the receiver at 127.0.0.1:[specified port], without limit time to terminate.

2. Run the receiver program:

   $ python3 receiver.py receiver_port sender_port txt_file_received max_win

   This will invoke the receiver to listen on the specified port, and will terminate after 2 seconds.

Notes

• The sender and receiver are designed to be run on the same machine, or on different machines on the same network. They are not designed to be run on different networks, or on the public internet.