Sync Protocol

[mvandeberg]

As a Koinos node operator, I want to get a new Koinos node from genesis to the current head block.

• [x] Define p2p protocol using libp2p interface (#14)
• [x] Figure out how to test libp2p protocols (#15)
• [x] Stub out communication functions (get_head_block, apply_block, get_ancestor_at_height, get_chain_id) (#16)
• [x] Compare Chain ID, Block Height, and Block ID to peer; disconnect if Chain ID differs, or if in sync with peer (#17)
• [x] If on same fork batch receive and apply blocks from peer, else hang up (#18)

[youkaicountry]

Note: The N block limit should be less than the inventory lifetime of the gossip mode.

Connect to peer Get response that includes Chain ID, Block Height, and Block ID Compare Chain ID, Block Height, Block ID to your own a. If the Chain ID is different -- hang up b. If Block ID and Block Height are equal, you are in sync -- hang up c. If Block Height is N less, then find the most recent ancestor via binary search and request the unknown blocks d.??? e. Profit