pcp - Peer Copy

Command line peer-to-peer data transfer tool based on libp2p. There already exists a long list of file transfer tools, so why bother building another one? The problem I had with the existing tools is that they rely on a limited set of servers to orchestrate peer matching and data relaying which poses a centralization concern. Many of the usual centralization vs. decentralization arguments apply here, e.g. the servers are single points of failure, the service operator has the power over whom to serve and whom not, etc. Further, as this recent issue in croc shows, this is a real risk for the sustainable operation of the provided service.