Design a Peer-to-Peer Network

Develop a peer-to-peer (P2P) network that allows computers to directly share resources without relying on a centralized server. The network should support efficient data discovery, distribution, and redundancy, handling dynamic joining and leaving of nodes. Key challenges include implementing robust mechanisms for peer discovery, data integrity, and fairness in resource sharing. The design should address security concerns, such as data encryption and protection against malicious nodes, ensuring a reliable and secure environment for users to share and access data.