def prepare_txn2_(self, protocol_id, str_list, scan_count, min_utxo,
max_utxo, sort_flag, from_uock):
if not self.WEB_SERVER_ADDR: return None
str_list2 = []
ii = 0 # 0x00000010 PUSH <MSG> PUSH <locate> PUSH <utf8-message>
for s in str_list: # 0x00000010 PUSH <PROOF> PUSH <locate> PUSH <hash32>
if type(s) != bytes:
s = s.encode('utf-8')
if len(s) > 75: # msg length must < 76 (OP_PUSHDATA1)
print(
'Error: item of RETURN list should be short than 75 bytes')
return None
ii += len(s) + 2 # 2 is OP_PUSH(1) + LEN(1)
if ii > 84: # RETURN(1) + B(1) + ID(4) + 84 = 90
print('Error: RETURN list exceed max byte length')
return None
str_list2.append(s)
self._sequence = self._sequence + 1
pay_from = [protocol.format.PayFrom(0, self._wallet.address())]
ex_args = []
ex_format = ''
for s in str_list2:
ex_format += 'BB%is' % len(s)
ex_args.extend([76, len(s), s]) # 0x4c=76 is OP_PUSHDATA1
ex_msg = struct.pack('<BBI' + ex_format, 106, 4, protocol_id,
*ex_args) # 0x6a=106 is OP_RETURN
pay_to = [protocol.format.PayTo(0, ex_msg)
] # value=0 means using RETURN script
return protocol.MakeSheet(self._vcn, self._sequence, pay_from, pay_to,
scan_count, min_utxo, max_utxo, sort_flag,
[from_uock])
def prepare_txn1_(self, pay_to, ext_in, scan_count, min_utxo, max_utxo, sort_flag, from_uocks):
if not self.WEB_SERVER_ADDR:
return None
self._sequence = self._sequence + 1
pay_from = [protocol.format.PayFrom(0, self._wallet.address())]
if ext_in:
for item in ext_in:
if isinstance(item, _list_types):
pay_from.append(protocol.format.PayFrom(item[0], item[1]))
else:
pay_from.append(item)
if from_uocks is None:
from_uocks = [0 for item in pay_from]
pay_to = [protocol.format.PayTo(int(v*100000000), a)
for (a, v) in pay_to]
return protocol.MakeSheet(self._vcn, self._sequence, pay_from, pay_to, scan_count, min_utxo, max_utxo, sort_flag, from_uocks)