tinterface: "block.headers": nicer error if server uses too low 'max' - electrum - Electrum Bitcoin wallet
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---
DIR commit 1ee99cf9c457f1fd1a417a3c04d3fe8af9e860a2
DIR parent d906819b03454dde869237873f6b9285828e1905
HTML Author: SomberNight <somber.night@protonmail.com>
Date: Thu, 18 Feb 2021 20:40:38 +0100
interface: "block.headers": nicer error if server uses too low 'max'
related https://github.com/spesmilo/electrumx/commit/4ff6a9c4f022bcddad9c7f99d6f2f47360fb222d
Diffstat:
M electrum/interface.py | 3 +++
1 file changed, 3 insertions(+), 0 deletions(-)
---
DIR diff --git a/electrum/interface.py b/electrum/interface.py
t@@ -608,6 +608,9 @@ class Interface(Logger):
assert_hex_str(res['hex'])
if len(res['hex']) != HEADER_SIZE * 2 * res['count']:
raise RequestCorrupted('inconsistent chunk hex and count')
+ # we never request more than 2016 headers, but we enforce those fit in a single response
+ if res['max'] < 2016:
+ raise RequestCorrupted(f"server uses too low 'max' count for block.headers: {res['max']} < 2016")
if res['count'] != size:
raise RequestCorrupted(f"expected {size} headers but only got {res['count']}")
conn = self.blockchain.connect_chunk(index, res['hex'])