From 9a8183f348f5b4b56efe8f27b24c7baf7c46e207 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Mon, 25 Jun 2018 11:53:31 +0200
Subject: [PATCH] network: avoid infinite loop if server headers conflict with
 checkpoints and server height is above max checkpoint

---
 lib/network.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/network.py b/lib/network.py
index b2c6f1329..75619b924 100644
--- a/lib/network.py
+++ b/lib/network.py
@@ -893,6 +893,9 @@ class Network(util.DaemonThread):
                     interface.bad_header = header
                     delta = interface.tip - height
                     next_height = max(self.max_checkpoint(), interface.tip - 2 * delta)
+                    if height == next_height:
+                        self.connection_down(interface.server)
+                        next_height = None
 
         elif interface.mode == 'binary':
             if chain: