tNetworkRetryManager: add random noise to time - electrum - Electrum Bitcoin wallet
HTML git clone https://git.parazyd.org/electrum
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---
DIR commit 7257172e1c091cfe63923d3cbd30ded4b63aba25
DIR parent 76f0ad3271a611457a88e4bfe213334afcf1a5ae
HTML Author: SomberNight <somber.night@protonmail.com>
Date: Wed, 15 Apr 2020 17:23:02 +0200
NetworkRetryManager: add random noise to time
Diffstat:
M electrum/util.py | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
---
DIR diff --git a/electrum/util.py b/electrum/util.py
t@@ -42,6 +42,7 @@ import time
from typing import NamedTuple, Optional
import ssl
import ipaddress
+import random
import aiohttp
from aiohttp_socks import ProxyConnector, ProxyType
t@@ -1372,7 +1373,10 @@ class NetworkRetryManager(Generic[_NetAddrType]):
def _trying_addr_now(self, addr: _NetAddrType) -> None:
last_time, num_attempts = self._last_tried_addr.get(addr, (0, 0))
- self._last_tried_addr[addr] = time.time(), num_attempts + 1
+ # we add up to 1 second of noise to the time, so that clients are less likely
+ # to get synchronised and bombard the remote in connection waves:
+ cur_time = time.time() + random.random()
+ self._last_tried_addr[addr] = cur_time, num_attempts + 1
def _on_connection_successfully_established(self, addr: _NetAddrType) -> None:
self._last_tried_addr[addr] = time.time(), 0