download headers chunks
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@ -166,13 +166,42 @@ class BlockchainVerifier(threading.Thread):
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return True
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def get_chunks(self, i, header, height):
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requested_chunks = []
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min_index = (self.local_height + 1)/2016
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max_index = (height + 1)/2016
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for n in range(min_index, max_index + 1):
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print_error( "requesting chunk", n )
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i.send([ ('blockchain.block.get_chunk',[n])], 'get_header')
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requested_chunks.append(n)
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break
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while requested_chunks:
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try:
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r = i.get_response('get_header',timeout=1)
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except Queue.Empty:
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continue
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if not r: continue
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if r.get('error'):
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print_error('Verifier received an error:', r)
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continue
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# 3. handle response
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method = r['method']
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params = r['params']
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result = r['result']
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if method == 'blockchain.block.get_chunk':
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index = params[0]
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self.verify_chunk(index, result)
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requested_chunks.remove(index)
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def verify_chunk(self, index, hexdata):
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data = hexdata.decode('hex')
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height = index*2016
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num = len(data)/80
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print_error("validating headers %d"%height)
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if index == 0:
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previous_hash = ("0"*64)
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@ -196,6 +225,7 @@ class BlockchainVerifier(threading.Thread):
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previous_hash = _hash
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self.save_chunk(index, data)
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print_error("validated chunk %d"%height)
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def verify_header(self, header):
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@ -371,7 +401,12 @@ class BlockchainVerifier(threading.Thread):
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height = header.get('block_height')
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if height > self.local_height + 50:
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self.get_chunks(i, header, height)
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if height > self.local_height:
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# get missing parts from interface (until it connects to my chain)
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chain = self.get_chain( i, header )
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