ELEC-H-417: BitTorrent-like Project

Customize the config

You can edit the file config/peers.ini to change the IP addresses and port numbers of the peers. The discoverable port number is fixed to 9000 and cannot be changed.

The default config file is:

[tracker]
ip_address = 127.0.0.1
port_number = 8000

[alice]
ip_address = 127.0.0.1
port_number = 8001

[bob]
ip_address = 127.0.0.1
port_number = 8002

Create a file of random bytes

head -c [bytes_count] < /dev/urandom > files/[filename]

Add a file

First create the directory files/ and add a file or create a new file with random bytes. Then, run:

python3 src/create_chunks.py [filename]

The first third of the chunks are owned only by Alice. The second third are owmed by Alice and Bob. And the last third are owned only by Bob.

Step 1

Launch Alice and Bob in two terminals:

python3 src/alice.py
python3 src/bob.py

Launch Charlie (you) in a third terminal:

python3 src/charlie.py 1

where 1 is the step number.

Step 2

Launch Alice and Bob in two terminals:

python3 src/alice.py
python3 src/bob.py

Launch the tracker in a terminal:

python3 src/tracker.py

Launch Charlie (you) in a third terminal:

python3 src/charlie.py 2

where 2 is the step number.

Step 3

Launch Alice and Bob in two terminals:

python3 src/alice.py
python3 src/bob.py

Launch the tracker in a terminal:

python3 src/tracker.py

Launch Charlie (you) in a third terminal:

python3 src/charlie.py 3

where 3 is the step number.

Merge the chunks

In order to recover the file from the downloaded chunks, run:

python3 src/merge_chunks.py

Check the file

In order to check if the file is exactly the same, run:

python3 src/check_file.py