async def handle_get_minor_block_header_list_with_skip_request(
self, request):
if request.branch != self.shard_state.branch:
self.close_with_error("Wrong branch from peer")
if request.limit <= 0 or request.limit > 2 * MINOR_BLOCK_HEADER_LIST_LIMIT:
self.close_with_error("Bad limit")
if request.type != 0 and request.type != 1:
self.close_with_error("Bad type value")
if request.type == 1:
block_height = request.get_height()
else:
block_hash = request.get_hash()
block_header = self.shard_state.db.get_minor_block_header_by_hash(
block_hash)
if block_header is None:
return GetMinorBlockHeaderListResponse(
self.shard_state.root_tip, self.shard_state.header_tip, [])
# Check if it is canonical chain
block_height = block_header.height
if (self.shard_state.db.get_minor_block_header_by_height(
block_height) != block_header):
return GetMinorBlockHeaderListResponse(
self.shard_state.root_tip, self.shard_state.header_tip, [])
header_list = []
while (len(header_list) < request.limit and block_height >= 0
and block_height <= self.shard_state.header_tip.height):
block_header = self.shard_state.db.get_minor_block_header_by_height(
block_height)
if block_header is None:
break
header_list.append(block_header)
if request.direction == Direction.GENESIS:
block_height -= request.skip + 1
else:
block_height += request.skip + 1
return GetMinorBlockHeaderListResponse(self.shard_state.root_tip,
self.shard_state.header_tip,
header_list)
async def handle_get_minor_block_header_list_request(self, request):
if request.branch != self.shard_state.branch:
self.close_with_error("Wrong branch from peer")
if request.limit <= 0 or request.limit > 2 * MINOR_BLOCK_HEADER_LIST_LIMIT:
self.close_with_error("Bad limit")
# TODO: support tip direction
if request.direction != Direction.GENESIS:
self.close_with_error("Bad direction")
block_hash = request.block_hash
header_list = []
for i in range(request.limit):
header = self.shard_state.db.get_minor_block_header_by_hash(block_hash)
header_list.append(header)
if header.height == 0:
break
block_hash = header.hash_prev_minor_block
return GetMinorBlockHeaderListResponse(
self.shard_state.root_tip, self.shard_state.header_tip, header_list
)