This a small chat application using socket programming in python, allowing you to talk to many peers with a Decentralized Replicated Data Store
This program facilitates peer-to-peer communication by allowing the Decentralized Replicated Data Store (DRDC) to add an unlimited number of users . Users can exchange messages or fake data using their respective port numbers. Additionally, the program supports network discovery and ensures data store consistency.
By the end of the program, each peer connected to the network will have all the transactions or messages that have been sent and received since the start of the program stored in its data store.
- Sender: allow the peer class to perform the sending functionality in a thread so it can send messages to any other peer using its port. It also has some useful methods as sending messages or broadcasting me to others.
- Receiver: allowing the peer to continuously check if there’s anyone to communicate with me. It also runs in another thread which is turned on by the peer instance.
- Peer: This class is the initiator of any new peer wants to be added to our Decentralized Replicated Data Store. Its responsibility to take the name of the user and its port, then runs the sender and receiver objects in two different threads.
- User: It’s a small entity that holds only the name, host and the peer of the user.
- Datastore(repository):This class have many useful functions such as add_to_queue which handles the problem of caching and not to overwhelm the datastore with many data. So, its responsibility to take data into queue and to free the queue and so on…
- DRDC: This is called the peer communication management, it can print the current users, broadcast the msg which is the network discovery role, also continuously synchronize the data with the datastore of each node or each pair, so the datastore will be consistent among all others.
- To start using this application all you want is a python terminal.
- First, open a terminal in the direcotory of the program:
DRDC.py→ this will start your application. - Then to start adding peers to your program or to your network, in a new terminal, type again :
peer.py→ this will add a new peer to your application. - No need to install any modules or servers to start using this application
- You must assure that you have python 3.7 or above if any.
- This program is built using Python in PyCharm IDE as part of my study in CS252 – CU – FCAI – Software Engineering II – 2019.