Programs

Using Python3.

sender.sh, receiver.sh, and network_emulator.sh are used to run the python program.

Instruction

The bash file should set up the permission if not:

chmod u+x receiver.sh
chmod u+x sender.sh
chmod u+x network_emulator.sh

1. network_emulator.sh have arguments:

• UDP port number to receive data from sender
• Receiver's network address
• Receiver’s receiving UDP port number
• UDP port number to send data to receiver
• Sender's network address
• Sender's receiving UDP port number
• Maximum Delay
• Drop probability
• Verbose

2. receiver.sh have arguments:

• Host address of the network emulator
• Network emulator's UDP port number
• Network emulator's network address
• Filename to store received data

3. sender.sh have arguments:

• Host address of the network emulator
• UDP port number for the network emulator to receive data
• UDP port for receiving ACKs from the network emulator
• Sender timeout in milliseconds
• Name of file to transfer

Example execution

Test the program on

ubuntu2204-002.student.cs.uwaterloo.ca
ubuntu2204-004.student.cs.uwaterloo.ca
ubuntu2204-006.student.cs.uwaterloo.ca

1. On the host host1: ./network_emulator.sh 39991 ubuntu2204-004.student.cs.uwaterloo.ca 39994 39993 ubuntu2204-006.student.cs.uwaterloo.ca 39992 1 0.2 0
2. On the host host2: ./receiver.sh ubuntu2204-002.student.cs.uwaterloo.ca 39993 39994 output.txt
3. On the host host3: ./sender.sh ubuntu2204-002.student.cs.uwaterloo.ca 39991 39992 50 input.txt