class Block(Message):
command = "block"
properties = [
('version', format.FormatTypeNumber('I')),
('prev_block', format.FormatTypeBytes(32)),
('merkle_root', format.FormatTypeBytes(32)),
('timestamp', format.FormatTypeNumber('I', allow_float=True)),
('bits', format.FormatTypeNumber('I')),
('nonce', format.FormatTypeNumber('I')),
('txns', format.FormatTypeArray(format.FormatTypeTxn())),
]
@staticmethod
def from_block(block):
return Block(block.version, block.previous_block_hash,
block.merkle_root, block.timestamp, block.bits,
block.nonce, block.transactions)
def _debug(self):
block_hash = util.get_block_header(self.version, self.prev_block,
self.merkle_root, self.timestamp,
self.bits, self.nonce)
return _debug(self, [('h', block_hash.encode('hex')),
('t', self.txns)])
class FilterLoad(Message):
command = "filterload"
name = "filter_load"
do_not_register = True
properties = [
('filter', format.FormatTypeArray(format.FormatTypeNumber('B'))),
('n_hashes_func', format.FormatTypeNumber('I')),
('n_tweak', format.FormatTypeNumber('I')),
('n_flags', format.FormatTypeNumber('B')),
]
class Transaction(Message):
command = "tx"
name = "transaction"
properties = [
('version', format.FormatTypeNumber('I')),
('tx_in', format.FormatTypeArray(format.FormatTypeTxnIn(), 1)),
('tx_out', format.FormatTypeArray(format.FormatTypeTxnOut(), 1)),
('lock_time', format.FormatTypeNumber('I')),
]
def _debug(self):
return _debug(self, [('in', self.tx_in), ('out', self.tx_out)])
class Reject(Message):
command = "reject"
properties = [
('message', format.FormatTypeVarString()),
('ccode', format.FormatTypeNumber('B')),
('reason', format.FormatTypeVarString()),
]
def _debug(self):
return _debug(self, [('m', self.message), ('r', self.reason)])
class Version(Message):
command = "version"
properties = [
('version', format.FormatTypeNumber('i')),
('services', format.FormatTypeNumber('Q')),
('timestamp', format.FormatTypeNumber('q', allow_float=True)),
('addr_recv', format.FormatTypeNetworkAddressWithoutTimestamp()),
('addr_from', format.FormatTypeNetworkAddressWithoutTimestamp()),
('nonce', format.FormatTypeBytes(8)),
('user_agent', format.FormatTypeVarString()),
('start_height', format.FormatTypeNumber('i')),
('relay', format.FormatTypeOptional(format.FormatTypeNumber('B'),
True)),
]
def _debug(self):
return _debug(self, [
('v', self.version),
('s', self.services),
('ua', self.user_agent),
('sh', self.start_height),
])
class GetBlocks(Message):
command = "getblocks"
name = "get_blocks"
properties = [
('version', format.FormatTypeNumber('I')),
('block_locator_hashes',
format.FormatTypeArray(format.FormatTypeBytes(32), 1)),
('hash_stop', format.FormatTypeBytes(32)),
]
def _debug(self):
return _debug(
self,
[('blh', [h.encode('hex') for h in self.block_locator_hashes])])
class MerkleBlock(Message):
command = "merkleblock"
name = "merkle_block"
do_not_register = True
properties = [
('version', format.FormatTypeNumber('I')),
('prev_block', format.FormatTypeBytes(32)),
('merkle_root', format.FormatTypeBytes(32)),
('timestamp', format.FormatTypeNumber('I', allow_float=True)),
('bits', format.FormatTypeNumber('I')),
('nonce', format.FormatTypeNumber('I')),
('total_transactions', format.FormatTypeNumber('I')),
('hashes', format.FormatTypeArray(format.FormatTypeBytes(32))),
('flags', format.FormatTypeArray(format.FormatTypeNumber('b'))),
]
def _parse_and_get(self, name):
if not hasattr(self, '_data'):
self._data = dict()
if not self._data:
data = self.payload
self._data = dict()
offset = 0
# extract version, relay_until, expiration, id and cancel
(v, r, e, i, c) = struct.unpack('<iqqii', data[offset:offset + 28])
self._data['version'] = v
self._data['relay_until'] = r
self._data['expiration'] = e
self._data['id'] = i
self._data['cancel'] = c
offset += 28
# extract the set of alerts this alert cancels
(vl, s) = format.parse_variable_set(data[offset:],
format.FormatTypeNumber('i'))
self._data['set_cancel'] = s
offset += vl
# extract minimum and maximum versions affecte by this alert
(minver, maxver) = struct.unpack('<ii', data[offset:offset + 8])
self._data['min_ver'] = minver
self._data['max_ver'] = maxver
offset += 8
# extract the set of sub-versions affected by this alert
(vl, s) = format.parse_variable_set(data[offset:],
format.FormatTypeVarString())
self._data['set_sub_ver'] = s
offset += vl
# extract priority
(p, ) = struct.unpack('<i', data[offset:offset + 4])
self._data['priority'] = p
offset += 4
# extract comment (no need to display)
(vl, c) = format.FormatTypeVarString.parse(data[offset:])
self._data['comment'] = c
offset += vl
# extract status bar message (should be shown in the UI)
(vl, s) = format.FormatTypeVarString.parse(data[offset:])
self._data['status_bar'] = s
offset += vl
# just incase *this* is an old version and the new format includes
# extra stuff, we can still view it
(vl, r) = format.FormatTypeVarString.parse(data[offset:])
self._data['reserved'] = r
offset += vl
return self._data[name]
