def hash_header(header):
header_bytes = header_to_string(header).decode('hex')
if (header["version"] >= 7):
hash_bytes = Hash(header_bytes) # new rules, sha256
else:
hash_bytes = HashScrypt(header_bytes) # old scrypt header hashing
return rev_hex(hash_bytes.encode('hex'))
def write_header(self, header, sync=True):
if not self.headers_data:
self.headers_offset = header.get('block_height')
self.headers_data += header_to_string(header).decode('hex')
if sync or len(self.headers_data) > 40*100:
self.flush_headers()
with self.cache_lock:
chunk_index = header.get('block_height')/2016
if chunk_index in self.chunk_cache:
del self.chunk_cache[chunk_index]
def write_header(self, header, sync=True):
if not self.headers_data:
self.headers_offset = header.get('block_height')
self.headers_data += header_to_string(header).decode('hex')
if sync or len(self.headers_data) > 40 * 100:
self.flush_headers()
with self.cache_lock:
chunk_index = header.get('block_height') / 2016
if chunk_index in self.chunk_cache:
del self.chunk_cache[chunk_index]
def write_header(self, header, sync=True):
if not self.headers_data:
self.headers_offset = header.get('block_height')
self.headers_data += header_to_string(header).decode('hex')
if sync or len(self.headers_data) > 40*100:
self.flush_headers()
with self.cache_lock:
chunk_index = header.get('block_height')/BLOCKS_PER_CHUNK
if self.chunk_cache.get(chunk_index):
self.chunk_cache.pop(chunk_index)
def reader_header(block_height):
global count
headers_filename = os.path.join(headers_path, 'blockchain_headers')
count = 0
h = b''
if os.path.exists(headers_filename):
with open(headers_filename, 'rb') as f:
f.seek(block_height * 80)
h = f.read(80)
with open('header_chunk_client', 'ab+') as the_file:
the_file.write(h)
if len(h) == 80:
count = count + 1
h = header_from_string(h)
return header_to_string(h)
def hash_header(header):
return rev_hex(Hash(header_to_string(header).decode('hex')).encode('hex'))
def hash_header(header):
return rev_hex(
HashX11(header_to_string(header).decode('hex')).encode('hex'))
def hash_header(header):
return rev_hex(
coinhash.NeoscryptHash(
header_to_string(header).decode('hex')).encode('hex'))
