Dfdaemon
Dfdaemon is the peer client in P2P network. It will be launched by dfget command or be running with dfget daemon.
Features
- Serve gRPC for 
dfgetwith downloading feature, and provide adaptation to different source protocols. - It can be used as seed peer. Turning on the Seed Peer mode can be used as a back-to-source download peer in a P2P cluster, which is the root peer for download in the entire cluster.
 - Serve proxy for container registry mirror and any other http backend.
 - Download object like via 
http,httpsand other custom protocol. 
Relationship
- Dfdaemon registers itself to Manager for fetching Scheduler.
 - Dfdaemon registers P2P tasks to Scheduler.
 - Dfdaemon uploads data to other Dfdaemon.