tpass chain to get_target (fixes issue #316) - electrum - Electrum Bitcoin wallet
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---
DIR commit 7deec48705d155115e04b7891c9aabc6ff687e52
DIR parent d70087a0f57acb57b454d1a0807206c75f794fdc
HTML Author: ThomasV <thomasv@gitorious>
Date: Wed, 16 Oct 2013 14:42:52 +0200
pass chain to get_target (fixes issue #316)
Diffstat:
M lib/blockchain.py | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
---
DIR diff --git a/lib/blockchain.py b/lib/blockchain.py
t@@ -113,7 +113,7 @@ class Blockchain(threading.Thread):
height = header.get('block_height')
prev_hash = self.hash_header(prev_header)
- bits, target = self.get_target(height/2016)
+ bits, target = self.get_target(height/2016, chain)
_hash = self.hash_header(header)
try:
assert prev_hash == header.get('prev_block_hash')
t@@ -271,14 +271,18 @@ class Blockchain(threading.Thread):
return h
- def get_target(self, index):
+ def get_target(self, index, chain=[]):
max_target = 0x00000000FFFF0000000000000000000000000000000000000000000000000000
if index == 0: return 0x1d00ffff, max_target
first = self.read_header((index-1)*2016)
last = self.read_header(index*2016-1)
-
+ if last is None:
+ for h in chain:
+ if h.get('block_height') == index*2016-1:
+ last = h
+
nActualTimespan = last.get('timestamp') - first.get('timestamp')
nTargetTimespan = 14*24*60*60
nActualTimespan = max(nActualTimespan, nTargetTimespan/4)