Package initialsync includes all initial block download and processing logic for the node, using a round robin strategy and a finite-state-machine to handle edge-cases in a beacon node's sync status.

NewService initializes new regular sync service.

ReadChunkedBlock handles each response chunk that is sent by the peer and converts it into a beacon block.

ReadStatusCode response from a RPC stream.

SendBodiesByRangeRequest sends BeaconBlocksByRange and returns fetched blocks, if any.

SetRPCStreamDeadlines sets read and write deadlines for libp2p-based connection streams.

SetStreamReadDeadline for reading from libp2p connection streams, deciding when to close a connection based on a particular duration.

SetStreamWriteDeadline for writing to libp2p connection streams, deciding when to close a connection based on a particular duration.

WriteBlockChunk writes block chunk object to stream.

ErrInvalidFetchedData is thrown if stream fails to provide requested blocks.

Service is responsible for handling all run time p2p related operations as the main entry point for network messages.

Checker defines a struct which can verify whether a node is currently synchronizing a chain with the rest of peers in the network.

BlockProcessor defines a block processing function, which allows to start utilizing blocks even before all blocks are ready.