You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
546 lines
18 KiB
546 lines
18 KiB
import threading
|
|
import time
|
|
import Queue
|
|
import os
|
|
import sys
|
|
import random
|
|
import traceback
|
|
|
|
import socks
|
|
import socket
|
|
|
|
from util import user_dir, print_error, print_msg
|
|
from bitcoin import *
|
|
import interface
|
|
from blockchain import Blockchain
|
|
|
|
DEFAULT_PORTS = {'t':'50001', 's':'50002', 'h':'8081', 'g':'8082'}
|
|
|
|
DEFAULT_SERVERS = {
|
|
'electrum.be':DEFAULT_PORTS,
|
|
'electrum.drollette.com':{'t':'50001', 's':'50002'},
|
|
'erbium1.sytes.net':{'t':'50001', 's':'50002'},
|
|
'ecdsa.net':{'t':'50001', 's':'110'},
|
|
'eco-electrum.ddns.net':{'t': '50001', 's': '50002', 'h': '80', 'g': '443'},
|
|
'electrum0.electricnewyear.net':{'t':'50001', 's':'50002'},
|
|
'kirsche.emzy.de':{'t':'50001', 's':'50002', 'h':'8081'},
|
|
'electrum2.hachre.de':DEFAULT_PORTS,
|
|
'electrum.hsmiths.com':DEFAULT_PORTS,
|
|
'EAST.electrum.jdubya.info':DEFAULT_PORTS,
|
|
'WEST.electrum.jdubya.info':DEFAULT_PORTS,
|
|
'electrum.no-ip.org':{'t':'50001', 's':'50002', 'h':'80', 'g':'443'},
|
|
'electrum.thwg.org':DEFAULT_PORTS,
|
|
'us.electrum.be':DEFAULT_PORTS,
|
|
}
|
|
|
|
DISCONNECTED_RETRY_INTERVAL = 60
|
|
|
|
|
|
def parse_servers(result):
|
|
""" parse servers list into dict format"""
|
|
from version import PROTOCOL_VERSION
|
|
servers = {}
|
|
for item in result:
|
|
host = item[1]
|
|
out = {}
|
|
version = None
|
|
pruning_level = '-'
|
|
if len(item) > 2:
|
|
for v in item[2]:
|
|
if re.match("[stgh]\d*", v):
|
|
protocol, port = v[0], v[1:]
|
|
if port == '': port = DEFAULT_PORTS[protocol]
|
|
out[protocol] = port
|
|
elif re.match("v(.?)+", v):
|
|
version = v[1:]
|
|
elif re.match("p\d*", v):
|
|
pruning_level = v[1:]
|
|
if pruning_level == '': pruning_level = '0'
|
|
try:
|
|
is_recent = float(version)>=float(PROTOCOL_VERSION)
|
|
except Exception:
|
|
is_recent = False
|
|
|
|
if out and is_recent:
|
|
out['pruning'] = pruning_level
|
|
servers[host] = out
|
|
|
|
return servers
|
|
|
|
|
|
|
|
def filter_protocol(servers, p):
|
|
l = []
|
|
for k, protocols in servers.items():
|
|
if p in protocols:
|
|
l.append( ':'.join([k, protocols[p], p]) )
|
|
return l
|
|
|
|
|
|
def pick_random_server(p='s'):
|
|
return random.choice( filter_protocol(DEFAULT_SERVERS,p) )
|
|
|
|
from simple_config import SimpleConfig
|
|
|
|
proxy_modes = ['socks4', 'socks5', 'http']
|
|
|
|
def serialize_proxy(p):
|
|
if type(p) != dict:
|
|
return None
|
|
return ':'.join([p.get('mode'),p.get('host'), p.get('port')])
|
|
|
|
def deserialize_proxy(s):
|
|
if type(s) != str:
|
|
return None
|
|
if s.lower() == 'none':
|
|
return None
|
|
proxy = { "mode":"socks5", "host":"localhost" }
|
|
args = s.split(':')
|
|
n = 0
|
|
if proxy_modes.count(args[n]) == 1:
|
|
proxy["mode"] = args[n]
|
|
n += 1
|
|
if len(args) > n:
|
|
proxy["host"] = args[n]
|
|
n += 1
|
|
if len(args) > n:
|
|
proxy["port"] = args[n]
|
|
else:
|
|
proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
|
|
return proxy
|
|
|
|
|
|
class Network(threading.Thread):
|
|
|
|
def __init__(self, config=None):
|
|
if config is None:
|
|
config = {} # Do not use mutables as default values!
|
|
threading.Thread.__init__(self)
|
|
self.daemon = True
|
|
self.config = SimpleConfig(config) if type(config) == type({}) else config
|
|
self.lock = threading.Lock()
|
|
self.num_server = 8 if not self.config.get('oneserver') else 0
|
|
self.blockchain = Blockchain(self.config, self)
|
|
self.interfaces = {}
|
|
self.queue = Queue.Queue()
|
|
self.running = False
|
|
# Server for addresses and transactions
|
|
self.default_server = self.config.get('server')
|
|
# Sanitize default server
|
|
try:
|
|
host, port, protocol = self.default_server.split(':')
|
|
assert protocol in 'st'
|
|
int(port)
|
|
except:
|
|
self.default_server = None
|
|
if not self.default_server:
|
|
self.default_server = pick_random_server('s')
|
|
|
|
self.protocol = self.default_server.split(':')[2]
|
|
self.irc_servers = {} # returned by interface (list from irc)
|
|
|
|
self.disconnected_servers = set([])
|
|
|
|
self.recent_servers = self.config.get('recent_servers',[]) # successful connections
|
|
self.pending_servers = set()
|
|
|
|
self.banner = ''
|
|
self.interface = None
|
|
self.heights = {}
|
|
self.merkle_roots = {}
|
|
self.utxo_roots = {}
|
|
|
|
dir_path = os.path.join( self.config.path, 'certs')
|
|
if not os.path.exists(dir_path):
|
|
os.mkdir(dir_path)
|
|
|
|
# address subscriptions and cached results
|
|
self.addresses = {}
|
|
self.connection_status = 'connecting'
|
|
self.requests_queue = Queue.Queue()
|
|
|
|
self.set_proxy(deserialize_proxy(self.config.get('proxy')))
|
|
|
|
|
|
def get_server_height(self):
|
|
return self.heights.get(self.default_server, 0)
|
|
|
|
def server_is_lagging(self):
|
|
h = self.get_server_height()
|
|
if not h:
|
|
print_error('no height for main interface')
|
|
return False
|
|
lag = self.get_local_height() - self.get_server_height()
|
|
return lag > 1
|
|
|
|
def set_status(self, status):
|
|
self.connection_status = status
|
|
self.notify('status')
|
|
|
|
def is_connected(self):
|
|
return self.interface and self.interface.is_connected
|
|
|
|
def send_subscriptions(self):
|
|
for addr in self.addresses:
|
|
self.interface.send_request({'method':'blockchain.address.subscribe', 'params':[addr]})
|
|
self.interface.send_request({'method':'server.banner','params':[]})
|
|
self.interface.send_request({'method':'server.peers.subscribe','params':[]})
|
|
|
|
def get_status_value(self, key):
|
|
if key == 'status':
|
|
value = self.connection_status
|
|
elif key == 'banner':
|
|
value = self.banner
|
|
elif key == 'updated':
|
|
value = (self.get_local_height(), self.get_server_height())
|
|
elif key == 'servers':
|
|
value = self.get_servers()
|
|
elif key == 'interfaces':
|
|
value = self.get_interfaces()
|
|
return value
|
|
|
|
def notify(self, key):
|
|
value = self.get_status_value(key)
|
|
self.response_queue.put({'method':'network.status', 'params':[key, value]})
|
|
|
|
def random_server(self):
|
|
choice_list = []
|
|
l = filter_protocol(self.get_servers(), self.protocol)
|
|
for s in l:
|
|
if s in self.pending_servers or s in self.disconnected_servers or s in self.interfaces.keys():
|
|
continue
|
|
else:
|
|
choice_list.append(s)
|
|
|
|
if not choice_list:
|
|
return
|
|
|
|
server = random.choice( choice_list )
|
|
return server
|
|
|
|
def get_parameters(self):
|
|
host, port, protocol = self.default_server.split(':')
|
|
auto_connect = self.config.get('auto_cycle', True)
|
|
return host, port, protocol, self.proxy, auto_connect
|
|
|
|
def get_interfaces(self):
|
|
return self.interfaces.keys()
|
|
|
|
def get_servers(self):
|
|
if self.irc_servers:
|
|
out = self.irc_servers
|
|
else:
|
|
out = DEFAULT_SERVERS
|
|
for s in self.recent_servers:
|
|
host, port, protocol = s.split(':')
|
|
if host not in out:
|
|
out[host] = { protocol:port }
|
|
return out
|
|
|
|
def start_interface(self, server):
|
|
if server in self.interfaces.keys():
|
|
return
|
|
i = interface.Interface(server, self.config)
|
|
self.pending_servers.add(server)
|
|
i.start(self.queue)
|
|
return i
|
|
|
|
def start_random_interface(self):
|
|
server = self.random_server()
|
|
if server:
|
|
self.start_interface(server)
|
|
|
|
def start_interfaces(self):
|
|
self.interface = self.start_interface(self.default_server)
|
|
for i in range(self.num_server):
|
|
self.start_random_interface()
|
|
|
|
def start(self, response_queue):
|
|
self.running = True
|
|
self.response_queue = response_queue
|
|
self.start_interfaces()
|
|
t = threading.Thread(target=self.process_requests_thread)
|
|
t.daemon = True
|
|
t.start()
|
|
self.blockchain.start()
|
|
threading.Thread.start(self)
|
|
|
|
def set_proxy(self, proxy):
|
|
self.proxy = proxy
|
|
if proxy:
|
|
proxy_mode = proxy_modes.index(proxy["mode"]) + 1
|
|
socks.setdefaultproxy(proxy_mode, proxy["host"], int(proxy["port"]))
|
|
socket.socket = socks.socksocket
|
|
# prevent dns leaks, see http://stackoverflow.com/questions/13184205/dns-over-proxy
|
|
def getaddrinfo(*args):
|
|
return [(socket.AF_INET, socket.SOCK_STREAM, 6, '', (args[0], args[1]))]
|
|
socket.getaddrinfo = getaddrinfo
|
|
else:
|
|
reload(socket)
|
|
|
|
def set_parameters(self, host, port, protocol, proxy, auto_connect):
|
|
proxy_str = serialize_proxy(proxy)
|
|
server_str = ':'.join([ host, port, protocol ])
|
|
self.config.set_key('auto_cycle', auto_connect, True)
|
|
self.config.set_key("proxy", proxy_str, True)
|
|
self.config.set_key("server", server_str, True)
|
|
# abort if changes were not allowed by config
|
|
if self.config.get('server') != server_str or self.config.get('proxy') != proxy_str:
|
|
return
|
|
|
|
if self.proxy != proxy or self.protocol != protocol:
|
|
print_error('restarting network')
|
|
for i in self.interfaces.values():
|
|
i.stop()
|
|
self.interfaces.pop(i.server)
|
|
self.set_proxy(proxy)
|
|
self.protocol = protocol
|
|
self.disconnected_servers = set([])
|
|
if auto_connect:
|
|
#self.interface = None
|
|
return
|
|
|
|
if auto_connect:
|
|
if not self.interface.is_connected:
|
|
self.switch_to_random_interface()
|
|
else:
|
|
if self.server_is_lagging():
|
|
self.stop_interface()
|
|
else:
|
|
self.set_server(server_str)
|
|
|
|
|
|
def switch_to_random_interface(self):
|
|
while self.interfaces:
|
|
i = random.choice(self.interfaces.values())
|
|
if i.is_connected:
|
|
self.switch_to_interface(i)
|
|
break
|
|
else:
|
|
self.remove_interface(i)
|
|
|
|
def switch_to_interface(self, interface):
|
|
server = interface.server
|
|
print_error("switching to", server)
|
|
self.interface = interface
|
|
self.config.set_key('server', server, False)
|
|
self.default_server = server
|
|
self.send_subscriptions()
|
|
self.set_status('connected')
|
|
self.notify('updated')
|
|
|
|
|
|
def stop_interface(self):
|
|
self.interface.stop()
|
|
|
|
|
|
def set_server(self, server):
|
|
if self.default_server == server and self.interface.is_connected:
|
|
return
|
|
|
|
if self.protocol != server.split(':')[2]:
|
|
return
|
|
|
|
# stop the interface in order to terminate subscriptions
|
|
if self.interface.is_connected:
|
|
self.stop_interface()
|
|
|
|
# notify gui
|
|
self.set_status('connecting')
|
|
# start interface
|
|
self.default_server = server
|
|
self.config.set_key("server", server, True)
|
|
|
|
if server in self.interfaces.keys():
|
|
self.switch_to_interface( self.interfaces[server] )
|
|
else:
|
|
self.interface = self.start_interface(server)
|
|
|
|
|
|
def add_recent_server(self, i):
|
|
# list is ordered
|
|
s = i.server
|
|
if s in self.recent_servers:
|
|
self.recent_servers.remove(s)
|
|
self.recent_servers.insert(0,s)
|
|
self.recent_servers = self.recent_servers[0:20]
|
|
self.config.set_key('recent_servers', self.recent_servers)
|
|
|
|
|
|
def add_interface(self, i):
|
|
self.interfaces[i.server] = i
|
|
self.notify('interfaces')
|
|
|
|
def remove_interface(self, i):
|
|
self.interfaces.pop(i.server)
|
|
self.notify('interfaces')
|
|
|
|
def new_blockchain_height(self, blockchain_height, i):
|
|
if self.is_connected():
|
|
if self.server_is_lagging():
|
|
print_error( "Server is lagging", blockchain_height, self.get_server_height())
|
|
if self.config.get('auto_cycle'):
|
|
self.set_server(i.server)
|
|
self.notify('updated')
|
|
|
|
|
|
def process_response(self, i, response):
|
|
method = response['method']
|
|
if method == 'blockchain.address.subscribe':
|
|
self.on_address(i, response)
|
|
elif method == 'blockchain.headers.subscribe':
|
|
self.on_header(i, response)
|
|
elif method == 'server.peers.subscribe':
|
|
self.on_peers(i, response)
|
|
elif method == 'server.banner':
|
|
self.on_banner(i, response)
|
|
else:
|
|
self.response_queue.put(response)
|
|
|
|
def process_requests_thread(self):
|
|
while self.is_running():
|
|
try:
|
|
request = self.requests_queue.get(timeout=0.1)
|
|
except Queue.Empty:
|
|
continue
|
|
self.process_request(request)
|
|
|
|
def process_request(self, request):
|
|
method = request['method']
|
|
params = request['params']
|
|
_id = request['id']
|
|
|
|
if method.startswith('network.'):
|
|
out = {'id':_id}
|
|
try:
|
|
f = getattr(self, method[8:])
|
|
except AttributeError:
|
|
out['error'] = "unknown method"
|
|
try:
|
|
out['result'] = f(*params)
|
|
except BaseException as e:
|
|
out['error'] = str(e)
|
|
traceback.print_exc(file=sys.stdout)
|
|
print_error("network error", str(e))
|
|
|
|
self.response_queue.put(out)
|
|
return
|
|
|
|
if method == 'blockchain.address.subscribe':
|
|
addr = params[0]
|
|
if addr in self.addresses:
|
|
self.response_queue.put({'id':_id, 'result':self.addresses[addr]})
|
|
return
|
|
|
|
try:
|
|
self.interface.send_request(request)
|
|
except:
|
|
# put it back in the queue
|
|
print_error("warning: interface not ready for", request)
|
|
self.requests_queue.put(request)
|
|
time.sleep(0.1)
|
|
|
|
def run(self):
|
|
disconnected_time = time.time()
|
|
while self.is_running():
|
|
try:
|
|
i, response = self.queue.get(timeout=0.1)
|
|
except Queue.Empty:
|
|
if len(self.interfaces) + len(self.pending_servers) < self.num_server:
|
|
self.start_random_interface()
|
|
if not self.interfaces:
|
|
if time.time() - disconnected_time > DISCONNECTED_RETRY_INTERVAL:
|
|
print_error('network: retrying connections')
|
|
self.disconnected_servers = set([])
|
|
disconnected_time = time.time()
|
|
if not self.interface.is_connected:
|
|
if self.config.get('auto_cycle'):
|
|
if self.interfaces:
|
|
self.switch_to_random_interface()
|
|
else:
|
|
if self.default_server in self.interfaces.keys():
|
|
self.switch_to_interface(self.interfaces[self.default_server])
|
|
else:
|
|
if self.default_server not in self.disconnected_servers and self.default_server not in self.pending_servers:
|
|
print_error("forcing reconnection")
|
|
self.interface = self.start_interface(self.default_server)
|
|
continue
|
|
|
|
if response is not None:
|
|
self.process_response(i, response)
|
|
continue
|
|
|
|
# if response is None it is a notification about the interface
|
|
if i.server in self.pending_servers:
|
|
self.pending_servers.remove(i.server)
|
|
|
|
if i.is_connected:
|
|
self.add_interface(i)
|
|
self.add_recent_server(i)
|
|
i.send_request({'method':'blockchain.headers.subscribe','params':[]})
|
|
if i == self.interface:
|
|
print_error('sending subscriptions to', self.interface.server)
|
|
self.send_subscriptions()
|
|
self.set_status('connected')
|
|
else:
|
|
if i.server in self.interfaces:
|
|
self.remove_interface(i)
|
|
if i.server in self.heights:
|
|
self.heights.pop(i.server)
|
|
if i == self.interface:
|
|
self.set_status('disconnected')
|
|
self.disconnected_servers.add(i.server)
|
|
|
|
print_error("Network: Stopping interfaces")
|
|
for i in self.interfaces.values():
|
|
i.stop()
|
|
|
|
|
|
def on_header(self, i, r):
|
|
result = r.get('result')
|
|
if not result:
|
|
return
|
|
height = result.get('block_height')
|
|
if not height:
|
|
return
|
|
self.heights[i.server] = height
|
|
self.merkle_roots[i.server] = result.get('merkle_root')
|
|
self.utxo_roots[i.server] = result.get('utxo_root')
|
|
# notify blockchain about the new height
|
|
self.blockchain.queue.put((i,result))
|
|
|
|
if i == self.interface:
|
|
if self.server_is_lagging() and self.config.get('auto_cycle'):
|
|
print_error( "Server lagging, stopping interface")
|
|
self.stop_interface()
|
|
self.notify('updated')
|
|
|
|
def on_peers(self, i, r):
|
|
if not r: return
|
|
self.irc_servers = parse_servers(r.get('result'))
|
|
self.notify('servers')
|
|
|
|
def on_banner(self, i, r):
|
|
self.banner = r.get('result')
|
|
self.notify('banner')
|
|
|
|
def on_address(self, i, r):
|
|
addr = r.get('params')[0]
|
|
result = r.get('result')
|
|
self.addresses[addr] = result
|
|
self.response_queue.put(r)
|
|
|
|
def stop(self):
|
|
print_error("stopping network")
|
|
with self.lock:
|
|
self.running = False
|
|
|
|
def is_running(self):
|
|
with self.lock:
|
|
return self.running
|
|
|
|
def get_header(self, tx_height):
|
|
return self.blockchain.read_header(tx_height)
|
|
|
|
def get_local_height(self):
|
|
return self.blockchain.height()
|
|
|