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PyBitmessage-2024-11-30/src/network/connectionchooser.py

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from queues import Queue
import random
from bmconfigparser import BMConfigParser
import knownnodes
from queues import portCheckerQueue, peerDiscoveryQueue
import state
def chooseConnection(stream):
haveOnion = BMConfigParser().safeGet("bitmessagesettings", "socksproxytype")[0:5] == 'SOCKS'
if state.trustedPeer:
return state.trustedPeer
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try:
retval = portCheckerQueue.get(False)
portCheckerQueue.task_done()
except Queue.Empty:
try:
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retval = peerDiscoveryQueue.get(False)
peerDiscoveryQueue.task_done()
except Queue.Empty:
for i in range(50):
peer = random.choice(knownnodes.knownNodes[stream].keys())
try:
rating = knownnodes.knownNodes[stream][peer]["rating"]
except TypeError:
print "Error in %s" % (peer)
rating = 0
if haveOnion and peer.host.endswith('.onion') and rating > 0:
rating *= 10
if rating > 1:
rating = 1
try:
if 0.05/(1.0-rating) > random.random():
return peer
except ZeroDivisionError:
return peer
raise ValueError
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return retval