How P2P Networks Find Each Other?

Peer-to-peer (P2P) networks are a popular way for computers to share files with each other. But how do these networks find each other and ensure that files are shared securely and quickly?



One common method used by P2P networks is called a tracker. A tracker is a central server that keeps track of all other users on the network. When a user wants to download a file, he/she queries the tracker to see which other users have the file and are allowed to share it.



Another way P2P networks find each other is through distributed summary tables (DHTs). A DHT is a decentralized system that allows computers to search for files and information without relying on a central server. Instead, each computer on the network acts as a node and stores information about other nodes on the network. When a user wants to download a file, he or she can perform a search on the DHT to find nodes that have the file they are looking for.

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