70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
from __future__ import unicode_literals
|
|
from __future__ import print_function
|
|
from __future__ import division
|
|
from __future__ import absolute_import
|
|
from future import standard_library
|
|
standard_library.install_aliases()
|
|
from builtins import range
|
|
from builtins import *
|
|
import random # nosec
|
|
|
|
import knownnodes
|
|
import protocol
|
|
import state
|
|
from bmconfigparser import BMConfigParser
|
|
from debug import logger
|
|
from queues import Queue, portCheckerQueue
|
|
|
|
|
|
def getDiscoveredPeer():
|
|
try:
|
|
peer = random.choice(list(state.discoveredPeers.keys()))
|
|
except (IndexError, KeyError):
|
|
raise ValueError
|
|
try:
|
|
del state.discoveredPeers[peer]
|
|
except KeyError:
|
|
pass
|
|
return peer
|
|
|
|
|
|
def chooseConnection(stream):
|
|
haveOnion = BMConfigParser().safeGet(
|
|
"bitmessagesettings", "socksproxytype")[0:5] == 'SOCKS'
|
|
if state.trustedPeer:
|
|
return state.trustedPeer
|
|
try:
|
|
retval = portCheckerQueue.get(False)
|
|
portCheckerQueue.task_done()
|
|
return retval
|
|
except Queue.Empty:
|
|
pass
|
|
# with a probability of 0.5, connect to a discovered peer
|
|
if random.choice((False, True)) and not haveOnion:
|
|
# discovered peers are already filtered by allowed streams
|
|
return getDiscoveredPeer()
|
|
for _ in range(50):
|
|
peer = random.choice(list(knownnodes.knownNodes[stream].keys()))
|
|
try:
|
|
rating = knownnodes.knownNodes[stream][peer]['rating']
|
|
except TypeError:
|
|
logger.warning('Error in %s', peer)
|
|
rating = 0
|
|
if haveOnion:
|
|
# onion addresses have a higher priority when SOCKS
|
|
if peer.host.endswith('.onion') and rating > 0:
|
|
rating = 1
|
|
else:
|
|
encodedAddr = protocol.encodeHost(peer.host)
|
|
# don't connect to local IPs when using SOCKS
|
|
if not protocol.checkIPAddress(encodedAddr, False):
|
|
continue
|
|
if rating > 1:
|
|
rating = 1
|
|
try:
|
|
if 0.05 / (1.0 - rating) > random.random():
|
|
return peer
|
|
except ZeroDivisionError:
|
|
return peer
|
|
raise ValueError
|