New creates a new bitswap session whose lifetime is bounded by the given context.

Session holds state for an individual bitswap transfer operation.

PeerManager keeps track of which sessions are interested in which peers and takes care of sending wants for the sessions.

ProviderFinder is used to find providers for a given key.

SessionManager manages all the sessions.

SessionPeerManager keeps track of peers in the session.

SessionWantsCanceller provides a method to cancel wants.

BlockPresence indicates whether a peer has a block.