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network: request checkpoint when opening a new connection

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This commit is contained in:
ThomasV
2017-03-29 17:21:18 +02:00
parent f46b403a8d
commit d371e1c807
2 changed files with 13 additions and 2 deletions
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7
lib/blockchain.py
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@@ -54,12 +54,17 @@ class Blockchain(util.PrintError):
t.daemon = True
t.start()
def pass_checkpoint(self, header):
if header.get('block_height') != self.checkpoint_height:
return True
return self.hash_header(header) == self.checkpoint_hash
def verify_header(self, header, prev_header, bits, target):
prev_hash = self.hash_header(prev_header)
_hash = self.hash_header(header)
if prev_hash != header.get('prev_block_hash'):
raise BaseException("prev hash mismatch: %s vs %s" % (prev_hash, header.get('prev_block_hash')))
if self.checkpoint_height == header.get('block_height') and self.checkpoint_hash != _hash:
if not self.pass_checkpoint(header):
raise BaseException('failed checkpoint')
if self.checkpoint_height == header.get('block_height'):
self.print_error("validated checkpoint", self.checkpoint_height)