async def fetch_headers(self, start_block: int, peer: LESPeer) -> List[BlockHeader]:
for i in range(self.max_consecutive_timeouts):
try:
return await peer.fetch_headers_starting_at(start_block, self.cancel_token)
except TimeoutError:
self.logger.info(
"Timeout when fetching headers from %s (attempt %d of %d)",
peer, i + 1, self.max_consecutive_timeouts)
# TODO: Figure out what's a good value to use here.
await asyncio.sleep(0.5)
raise TooManyTimeouts()
async def fetch_headers(self, start_block: int, peer: LESPeer) -> List[BlockHeader]:
if start_block == GENESIS_BLOCK_NUMBER:
raise ValidationError("Must not attempt to download genesis header")
for i in range(self.max_consecutive_timeouts):
try:
return await self._fetch_headers_starting_at(peer, start_block)
except TimeoutError:
self.logger.info(
"Timeout when fetching headers from %s (attempt %d of %d)",
peer, i + 1, self.max_consecutive_timeouts)
# TODO: Figure out what's a good value to use here.
await asyncio.sleep(0.5)
raise TooManyTimeouts()