def download_blocks(peer, peers_block_count, length):
b = [
max(0, length - 10),
min(peers_block_count['length'] + 1, length + custom.download_many)
]
# tell them our request's range
blocks = network_cmd(peer, {'type': 'rangeRequest', 'range': b})
if type(blocks) != list: return -1
if not isinstance(blocks, list): return []
length = tools.db_get('length') # our blockcount
block = tools.db_get(length) # get the last block
for i in range(
10
): # this part should be re-written so badly -> this was from Zack.... NO COMMENT
if tools.fork_check(blocks, custom.queues, length,
block): # if block is valid
blockchain.delete_block(custom.queues) # wtf does this do?
length -= 1
for block in blocks:
custom.queues['suggested_blocks'].put([block, peer])
return 0
def download_blocks(peer, DB, peers_block_count, length):
def fork_check(newblocks, DB):
length = copy.deepcopy(DB['length'])
block = blockchain.db_get(length, DB)
recent_hash = tools.det_hash(block)
their_hashes = map(tools.det_hash, newblocks)
return recent_hash not in map(tools.det_hash, newblocks)
def bounds(length, peers_block_count, DB):
if peers_block_count['length'] - length > custom.download_many:
end = length + custom.download_many - 1
else:
end = peers_block_count['length']
return [max(length - 2, 0), end]
blocks = cmd({'type': 'rangeRequest',
'range': bounds(length, peers_block_count, DB)})
if type(blocks) != type([1, 2]):
return []
for i in range(2): # Only delete a max of 2 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if fork_check(blocks, DB):
blockchain.delete_block(DB)
for block in blocks:
DB['suggested_blocks'].append(block)
return
def download_blocks(peer, DB, peers_block_count, length):
def fork_check(newblocks, DB):
block = blockchain.db_get(DB['length'], DB)
recent_hash = tools.det_hash(block)
their_hashes = map(tools.det_hash, newblocks)
return recent_hash not in their_hashes
def bounds(length, peers_block_count):
if peers_block_count['length'] - length > custom.download_many:
end = length + custom.download_many - 1
else:
end = peers_block_count['length']
return [max(length - 2, 0), end]
blocks = cmd({'type': 'rangeRequest',
'range': bounds(length, peers_block_count)})
if not isinstance(blocks, list):
return []
for i in range(2): # Only delete a max of 2 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if fork_check(blocks, DB):
blockchain.delete_block(DB)
DB['suggested_blocks'].extend(blocks)
return
def download_blocks(peer, DB, peers_block_count, length):
def fork_check(newblocks, DB):
length = copy.deepcopy(DB['length'])
block = blockchain.db_get(length, DB)
recent_hash = tools.det_hash(block)
their_hashes = map(tools.det_hash, newblocks)
return recent_hash not in map(tools.det_hash, newblocks)
def bounds(length, peers_block_count, DB):
if peers_block_count['length'] - length > custom.download_many:
end = length + custom.download_many - 1
else:
end = peers_block_count['length']
return [max(length - 2, 0), end]
blocks = cmd({
'type': 'rangeRequest',
'range': bounds(length, peers_block_count, DB)
})
if type(blocks) != type([1, 2]):
return []
for i in range(10): # Only delete a max of 20 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if fork_check(blocks, DB):
blockchain.delete_block(DB)
DB['suggested_blocks'] += blocks
return
def pushblock(dic, DB):
if 'blocks' in dic:
for i in range(20):
if tools.fork_check(dic['blocks'], DB):
blockchain.delete_block(DB)
for block in dic['blocks']:
DB['suggested_blocks'].put([block, dic['peer']])
else:
DB['suggested_blocks'].put([dic['block'], dic['peer']])
return 'success'
def pushblock(dic, DB):
if 'blocks' in dic:
for i in range(20):
if tools.fork_check(dic['blocks'], DB):
blockchain.delete_block(DB)
for block in dic['blocks']:
DB['suggested_blocks'].put([block, dic['peer']])
else:
DB['suggested_blocks'].put([dic['block'], dic['peer']])
return 'success'
def download_blocks(peer, DB, peers_block_count, length):
blocks = cmd(peer, {'type': 'rangeRequest',
'range': bounds(length, peers_block_count['length'])})
if not isinstance(blocks, list):
return []
for i in range(2): # Only delete a max of 2 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if fork_check(blocks, DB):
blockchain.delete_block(DB)
for block in blocks:
DB['suggested_blocks'].put([block, peer])
return 0
def download_blocks(peer, DB, peers_block_count, length):
b=[max(0, length-10), min(peers_block_count, length+custom.download_many)]
blocks = cmd(peer, {'type': 'rangeRequest', 'range': b})
if type(blocks)!=list: return -1
if not isinstance(blocks, list): return []
length=tools.db_get('length')
block=tools.db_get(length)
for i in range(10):#this part should be re-written so badly
if tools.fork_check(blocks, DB, length, block):
blockchain.delete_block(DB)
length-=1
for block in blocks:
DB['suggested_blocks'].put([block, peer])
return 0
def pushblock(dic, DB):
length=tools.db_get('length')
block = tools.db_get(length, DB)
if 'peer' in dic: peer=dic['peer']
else: peer=False
if 'blocks' in dic:
for i in range(20):
if tools.fork_check(dic['blocks'], DB, length, block):
blockchain.delete_block(DB)
length-=1
for block in dic['blocks']:
DB['suggested_blocks'].put([block, peer])
else:
DB['suggested_blocks'].put([dic['block'], peer])
return 'success'
def pushblock(dic, DB):
length = tools.db_get('length')
block = tools.db_get(length, DB)
if 'peer' in dic: peer = dic['peer']
else: peer = False
if 'blocks' in dic:
for i in range(20):
if tools.fork_check(dic['blocks'], DB, length, block):
blockchain.delete_block(DB)
length -= 1
for block in dic['blocks']:
DB['suggested_blocks'].put([block, peer])
else:
DB['suggested_blocks'].put([dic['block'], peer])
return 'success'
def download_blocks(peer, DB, peers_block_count, length):
blocks = cmd(
peer, {
'type': 'rangeRequest',
'range': bounds(length, peers_block_count['length'])
})
if not isinstance(blocks, list):
return []
for i in range(2): # Only delete a max of 2 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if fork_check(blocks, DB):
blockchain.delete_block(DB)
for block in blocks:
DB['suggested_blocks'].put([block, peer])
return 0
def peer_check(peer, DB):
cmd=(lambda x: networking.send_command(peer, x))
block_count=cmd({'type':'blockCount'})
if type(block_count)!=type({'a':1}):
return
if 'error' in block_count.keys():
return
length=copy.deepcopy(DB['length'])
us=copy.deepcopy(DB['diffLength'])
them=block_count['diffLength']
ahead=length-block_count['length']
if them < us and ahead>0:#if we are ahead of them
cmd({'type':'pushblock',
'block':blockchain.db_get(block_count['length']+1, DB)})
return []
if length<0: return []
if us == them:#if we are on the same block, ask for any new txs
block=blockchain.db_get(length, DB)
if 'recent_hash' in block_count:
if tools.det_hash(block)!=block_count['recent_hash']:
blockchain.delete_block()
#print('WE WERE ON A FORK. time to back up.')
return []
my_txs=DB['txs']
txs=cmd({'type':'txs'})
for tx in txs:
DB['suggested_txs'].append(tx)
pushers=[x for x in my_txs if x not in txs]
for push in pushers:
cmd({'type':'pushtx', 'tx':push})
return []
start=length-2
if start<0:
start=0
if ahead>custom.download_many:
end=length+custom.doanload_many-1
else:
end=block_count['length']
blocks= cmd({'type':'rangeRequest',
'range':[start, end]})
if type(blocks)!=type([1,2]):
return []
times=2
while fork_check(blocks, DB) and times>0:
times-=1
blockchain.delete_block(DB)
for block in blocks:
DB['suggested_blocks'].append(block)
def download_blocks(peer, DB, peers_block_count, length):
b = [
max(0, length - 10),
min(peers_block_count, length + custom.download_many)
]
blocks = cmd(peer, {'type': 'rangeRequest', 'range': b})
if type(blocks) != list: return -1
if not isinstance(blocks, list): return []
length = tools.db_get('length')
block = tools.db_get(length)
for i in range(10): #this part should be re-written so badly
if tools.fork_check(blocks, DB, length, block):
blockchain.delete_block(DB)
length -= 1
for block in blocks:
DB['suggested_blocks'].put([block, peer])
return 0
def download_blocks(peer, DB, peers_block_count, length):
b = [
max(0, length - 10),
min(peers_block_count['length'], length + custom.download_many)
]
#tools.log('asked for: ' +str(b))
blocks = cmd(peer, {'type': 'rangeRequest', 'range': b})
if type(blocks) != list:
#tools.log('unable to download blocks that time')
return -1
if not isinstance(blocks, list):
return []
for i in range(20): # Only delete a max of 20 blocks, otherwise a
# peer might trick us into deleting everything over and over.
if tools.fork_check(blocks, DB):
blockchain.delete_block(DB)
for block in blocks:
DB['suggested_blocks'].put([block, peer])
return 0
