PyBitmessage-2021-04-27/src/knownnodes.py
Peter Surda a0bbd21efc
Add ratings to peers
- outbound peers now have a rating
- it's also shown in the network status tab
- currently it's between -1 to +1, changes by 0.1 steps and uses a
hyperbolic function 0.05/(1.0 - rating) to convert rating to
probability with which we should connect to that node when randomly
chosen
- it increases when we successfully establish a full outbound connection
to a node, and decreases when we fail to do that
- onion nodes have priority when using SOCKS
2017-07-05 09:17:01 +02:00

46 lines
1.4 KiB
Python

import pickle
import threading
from bmconfigparser import BMConfigParser
import state
knownNodesLock = threading.Lock()
knownNodes = {}
knownNodesTrimAmount = 2000
def saveKnownNodes(dirName = None):
if dirName is None:
dirName = state.appdata
with knownNodesLock:
with open(dirName + 'knownnodes.dat', 'wb') as output:
pickle.dump(knownNodes, output)
def increaseRating(peer):
increaseAmount = 0.1
maxRating = 1
with knownNodesLock:
for stream in knownNodes.keys():
try:
knownNodes[stream][peer]["rating"] = min(knownNodes[stream][peer]["rating"] + increaseAmount, maxRating)
except KeyError:
pass
def decreaseRating(peer):
decreaseAmount = 0.1
minRating = -1
with knownNodesLock:
for stream in knownNodes.keys():
try:
knownNodes[stream][peer]["rating"] = max(knownNodes[stream][peer]["rating"] - decreaseAmount, minRating)
except KeyError:
pass
def trimKnownNodes(recAddrStream = 1):
if len(knownNodes[recAddrStream]) < BMConfigParser().get("knownnodes", "maxnodes"):
return
with knownNodesLock:
oldestList = sorted(knownNodes[recAddrStream], key=lambda x: x['lastseen'])[:knownNodesTrimAmount]
for oldest in oldestList:
del knownNodes[recAddrStream][oldest]