def BN(self, data): # request for block (n)
"""Block(n)
Sends the nth block from mainchain.
:return:
"""
if int(data) <= self.factory.chain.m_blockheight():
logger.info(
'<<<Sending block number %s %s bytes to node: %s', int(data),
len(
helper.json_bytestream(
self.factory.chain.m_get_block(int(data)))),
self.transport.getPeer().host)
self.transport.write(
self.wrap_message(
'BK',
helper.json_bytestream_bk(
self.factory.chain.m_get_block(int(data)))))
else:
if int(data) >= self.factory.chain.m_blockheight():
logger.info(
'BN for a blockheight greater than local chain length..')
else:
logger.info(
'BN request without valid block number %s - closing connection',
str(data))
self.transport.loseConnection()
return
def LB(self): # request for last block to be sent
"""
Last BLock
Sends the last block from the main chain.
:return:
"""
logger.info('<<<Sending last block %s %s bytes to node %s', self.factory.chain.m_blockheight(),
str(len(helper.json_bytestream(self.factory.chain.m_get_last_block()))),
self.transport.getPeer().host)
self.transport.write(self.wrap_message('BK', helper.json_bytestream_bk(self.factory.chain.m_get_last_block())))
return
def send_block_to_peers(self, block):
# logger.info('<<<Transmitting block: ', block.blockheader.headerhash)
extra_data = {
'stake_selector': block.transactions[0].txto,
'blocknumber': block.blockheader.blocknumber,
'prev_headerhash': block.blockheader.prev_blockheaderhash
}
if block.blockheader.blocknumber > 1:
extra_data['reveal_hash'] = block.blockheader.reveal_hash
extra_data['vote_hash'] = block.blockheader.vote_hash
self.register_and_broadcast('BK', block.blockheader.headerhash,
json_bytestream_bk(block), extra_data)
return
def send_block_to_peers(self, block, peer_identity=None):
# logger.info(('<<<Transmitting block: ', block.blockheader.headerhash))
self.register_and_broadcast('BK', block.blockheader.headerhash,
json_bytestream_bk(block))
return