A limitation was that only music files could be shared. The files would be transferred directly between private computers (peers/nodes).
When someone searched for a file, the server searched all available copies of that file and presented them to the user. The central index server indexed the users and their shared content.
Peer-to-peer file sharing saw its first wave of popularity after the introduction of Napster, a file sharing application that used P2P technology. Timeline of peer-to-peer software History Users are able to transfer one or more files from one computer to another across the Internet through various file transfer systems and other file-sharing networks. These included increasing Internet bandwidth, the widespread digitization of physical media, and the increasing capabilities of residential personal computers. Several factors contributed to the widespread adoption and facilitation of peer-to-peer file sharing. Microsoft uses it for Update distribution (Windows 10) and online video games use it as their content distribution network for downloading large amounts of data without incurring the dramatic costs for bandwidth inherent when providing just a single source. Peer-to-peer file sharing technology has evolved through several design stages from the early networks like Gnutella, which popularized the technology in several iterations that used various front ends such as Kazaa, Limewire and WinMX before Edonkey then on to later models like the BitTorrent protocol. After much discussion on forums and in chat-rooms, it was decided that Napster had been vulnerable due to its reliance on centralised servers and their physical location and thus competing groups raced to build a decentralised peer-to-peer system. Napster had been incredibly popular at its peak, spawning a grass-roots movement following from the mixtape scene of the 80's and left a significant gap in music availability with its followers.
Record companies and artists called for its shutdown and FBI raids followed. The early days of file-sharing were done predominantly by client-server transfers from web pages, FTP and IRC before Napster popularised a windows application that allowed users to both upload and download with a freemium style service. The nodes (peers) of such networks are end-user computers and distribution servers (not required). P2P file sharing allows users to access media files such as books, music, movies, and games using a P2P software program that searches for other connected computers on a P2P network to locate the desired content. Peer-to-peer file sharing is the distribution and sharing of digital media using peer-to-peer (P2P) networking technology. Comparison of Internet Relay Chat clients.Data distribution using P2P networking technology.
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