NewCheckpointInit creates a new CheckpointInit.

NewForwardUpdateSync creates a new ForwardUpdateSync.

NewHeadSync creates a new HeadSync.

data: types.FinalityUpdate.

data: types.HeadInfo.

data: types.OptimisticUpdate.

CheckpointInit implements request.Module; it fetches the light client bootstrap data belonging to the given checkpoint hash and initializes the committee chain if successful.

ForwardUpdateSync implements request.Module; it fetches updates between the committee chain head and each server's announced head.

HeadSync implements request.Module; it updates the validated and prefetch heads of HeadTracker based on the EvHead and EvSignedHead events coming from registered servers.