electrum

commit 75a85a81616a660b8932d0bbc3e3c2842cdc6532
parent 8b1051fa24ff7f2c85b66a6012581f0287bbb827
Author: SomberNight <somber.night@protonmail.com>
Date:   Tue,  3 Jul 2018 17:17:20 +0200

network: disconnect from server on malformed header subs

closes #4478

Diffstat:
M
lib/network.py
 | 
7
++++++-

1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/network.py b/lib/network.py
@@ -1065,7 +1065,12 @@ class Network(util.DaemonThread):
         self.on_stop()
 
     def on_notify_header(self, interface, header_dict):
-        header_hex, height = header_dict['hex'], header_dict['height']
+        try:
+            header_hex, height = header_dict['hex'], header_dict['height']
+        except KeyError:
+            # no point in keeping this connection without headers sub
+            self.connection_down(interface.server)
+            return
         header = blockchain.deserialize_header(util.bfh(header_hex), height)
         if height < self.max_checkpoint():
             self.connection_down(interface.server)