Parse transaction version field

Closes: #2462

lib/tests/test_transaction.py

@@ -7,7 +7,7 @@ from lib.keystore import xpubkey_to_address
 
 unsigned_blob = '01000000012a5c9a94fcde98f5581cd00162c60a13936ceb75389ea65bf38633b424eb4031000000005701ff4c53ff0488b21e03ef2afea18000000089689bff23e1e7fb2f161daa37270a97a3d8c2e537584b2d304ecb47b86d21fc021b010d3bd425f8cf2e04824bfdf1f1f5ff1d51fadd9a41f9e3fb8dd3403b1bfe00000000ffffffff0140420f00000000001976a914230ac37834073a42146f11ef8414ae929feaafc388ac00000000'
 signed_blob = '01000000012a5c9a94fcde98f5581cd00162c60a13936ceb75389ea65bf38633b424eb4031000000006c493046022100a82bbc57a0136751e5433f41cf000b3f1a99c6744775e76ec764fb78c54ee100022100f9e80b7de89de861dc6fb0c1429d5da72c2b6b2ee2406bc9bfb1beedd729d985012102e61d176da16edd1d258a200ad9759ef63adf8e14cd97f53227bae35cdb84d2f6ffffffff0140420f00000000001976a914230ac37834073a42146f11ef8414ae929feaafc388ac00000000'
-
+v2_blob = "0200000001191601a44a81e061502b7bfbc6eaa1cef6d1e6af5308ef96c9342f71dbf4b9b5000000006b483045022100a6d44d0a651790a477e75334adfb8aae94d6612d01187b2c02526e340a7fd6c8022028bdf7a64a54906b13b145cd5dab21a26bd4b85d6044e9b97bceab5be44c2a9201210253e8e0254b0c95776786e40984c1aa32a7d03efa6bdacdea5f421b774917d346feffffff026b20fa04000000001976a914024db2e87dd7cfd0e5f266c5f212e21a31d805a588aca0860100000000001976a91421919b94ae5cefcdf0271191459157cdb41c4cbf88aca6240700"
 
 class TestBCDataStream(unittest.TestCase):
 
@@ -141,6 +141,10 @@ class TestTransaction(unittest.TestCase):
         res = xpubkey_to_address('fd007d260305ef27224bbcf6cf5238d2b3638b5a78d5')
         self.assertEquals(res, ('fd007d260305ef27224bbcf6cf5238d2b3638b5a78d5', '1CQj15y1N7LDHp7wTt28eoD1QhHgFgxECH'))
 
+    def test_version_field(self):
+        tx = transaction.Transaction(v2_blob)
+        self.assertEquals(tx.txid(), "b97f9180173ab141b61b9f944d841e60feec691d6daab4d4d932b24dd36606fe")
+
 
 class NetworkMock(object):
 

lib/transaction.py

@@ -515,6 +515,7 @@ class Transaction:
         self._inputs = None
         self._outputs = None
         self.locktime = 0
+        self.version = 1
 
     def update(self, raw):
         self.raw = raw
@@ -583,6 +584,7 @@ class Transaction:
         self._inputs = d['inputs']
         self._outputs = [(x['type'], x['address'], x['value']) for x in d['outputs']]
         self.locktime = d['lockTime']
+        self.version = d['version']
         return d
 
     @classmethod
@@ -708,7 +710,7 @@ class Transaction:
         return s
 
     def serialize_preimage(self, i):
-        nVersion = int_to_hex(1, 4)
+        nVersion = int_to_hex(self.version, 4)
         nHashType = int_to_hex(1, 4)
         nLocktime = int_to_hex(self.locktime, 4)
         inputs = self.inputs()
@@ -733,7 +735,7 @@ class Transaction:
         return any(self.is_segwit_input(x) for x in self.inputs())
 
     def serialize(self, estimate_size=False, witness=True):
-        nVersion = int_to_hex(1, 4)
+        nVersion = int_to_hex(self.version, 4)
         nLocktime = int_to_hex(self.locktime, 4)
         inputs = self.inputs()
         outputs = self.outputs()