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electrum-bitcoinprivate
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download headers chunks

This commit is contained in:
ThomasV 2013-09-03 07:29:44 +02:00
parent 7c2ac01306
commit 7204dceeac
1 changed files with 36 additions and 1 deletions
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37
lib/blockchain.py
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@ -166,13 +166,42 @@ class BlockchainVerifier(threading.Thread):
return True
def get_chunks(self, i, header, height):
requested_chunks = []
min_index = (self.local_height + 1)/2016
max_index = (height + 1)/2016
for n in range(min_index, max_index + 1):
print_error( "requesting chunk", n )
i.send([ ('blockchain.block.get_chunk',[n])], 'get_header')
requested_chunks.append(n)
break
while requested_chunks:
try:
r = i.get_response('get_header',timeout=1)
except Queue.Empty:
continue
if not r: continue
if r.get('error'):
print_error('Verifier received an error:', r)
continue
# 3. handle response
method = r['method']
params = r['params']
result = r['result']
if method == 'blockchain.block.get_chunk':
index = params[0]
self.verify_chunk(index, result)
requested_chunks.remove(index)
def verify_chunk(self, index, hexdata):
data = hexdata.decode('hex')
height = index*2016
num = len(data)/80
print_error("validating headers %d"%height)
if index == 0:
previous_hash = ("0"*64)
@ -196,6 +225,7 @@ class BlockchainVerifier(threading.Thread):
previous_hash = _hash
self.save_chunk(index, data)
print_error("validated chunk %d"%height)
def verify_header(self, header):
@ -371,7 +401,12 @@ class BlockchainVerifier(threading.Thread):
height = header.get('block_height')
if height > self.local_height + 50:
self.get_chunks(i, header, height)
if height > self.local_height:
# get missing parts from interface (until it connects to my chain)
chain = self.get_chain( i, header )