electrum

commit 4dcefa7d3b937c5e36148ee30566a096a4526b0d
parent 5a5502303fc5e48cf0dc05e0f5c513dc0fddf4d3
Author: SomberNight <somber.night@protonmail.com>
Date:   Tue, 26 Jun 2018 16:56:30 +0200

network: fix fork detection in certain backward search cases

if there are no checkpoints and the split is very old, the exponential backward search might undershoot so that it asks for the genesis block but 0 and None are not distinguished hence the fork detection logic fails

Diffstat:
M
lib/network.py
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/network.py b/lib/network.py
@@ -974,7 +974,7 @@ class Network(util.DaemonThread):
         else:
             raise Exception(interface.mode)
         # If not finished, get the next header
-        if next_height:
+        if next_height is not None:
             if interface.mode == 'catch_up' and interface.tip > next_height + 50:
                 self.request_chunk(interface, next_height // 2016)
             else: