1 import threading, time, Queue, os, sys, shutil, random
2 from util import user_dir, appdata_dir, print_error, print_msg
5 from blockchain import Blockchain
7 DEFAULT_PORTS = {'t':'50001', 's':'50002', 'h':'8081', 'g':'8082'}
10 'the9ull.homelinux.org': {'h': '8082', 't': '50001'},
11 'electrum.coinwallet.me': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
12 'electrum.dynaloop.net': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
13 'electrum.koh.ms': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
14 'electrum.novit.ro': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
15 'electrum.stepkrav.pw': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
16 'ecdsa.org': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
17 'electrum.mooo.com': {'h': '8081', 't': '50001'},
18 'electrum.bitcoins.sk': {'h': '8081', 's': '50002', 't': '50001', 'g': '8'},
19 'electrum.no-ip.org': {'h': '80', 's': '50002', 't': '50001', 'g': '443'},
20 'electrum.drollette.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
21 'btc.it-zone.org': {'h': '80', 's': '110', 't': '50001', 'g': '443'},
22 'electrum.yacoin.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
23 'electrum.be': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'}
28 def filter_protocol(servers, p):
30 for k, protocols in servers.items():
32 l.append( ':'.join([k, protocols[p], p]) )
36 def pick_random_server():
37 return random.choice( filter_protocol(DEFAULT_SERVERS,'s') )
40 class Network(threading.Thread):
42 def __init__(self, config):
43 threading.Thread.__init__(self)
46 self.lock = threading.Lock()
47 self.blockchain = Blockchain(config, self)
49 self.queue = Queue.Queue()
50 self.default_server = self.config.get('server')
51 self.disconnected_servers = []
56 self.proxy = self.config.get('proxy')
59 dir_path = os.path.join( self.config.path, 'certs')
60 if not os.path.exists(dir_path):
64 # default subscriptions
65 self.subscriptions = {}
66 self.subscriptions[self.on_banner] = [('server.banner',[])]
67 self.subscriptions[self.on_peers] = [('server.peers.subscribe',[])]
70 def send_subscriptions(self):
71 for cb, sub in self.subscriptions.items():
72 self.interface.send(sub, cb)
75 def subscribe(self, messages, callback):
77 if self.subscriptions.get(callback) is None:
78 self.subscriptions[callback] = []
79 for message in messages:
80 if message not in self.subscriptions[callback]:
81 self.subscriptions[callback].append(message)
83 if self.interface and self.interface.is_connected:
84 self.interface.send( messages, callback )
87 def register_callback(self, event, callback):
89 if not self.callbacks.get(event):
90 self.callbacks[event] = []
91 self.callbacks[event].append(callback)
94 def trigger_callback(self, event):
96 callbacks = self.callbacks.get(event,[])[:]
98 [callback() for callback in callbacks]
101 def random_server(self):
103 l = filter_protocol(self.get_servers(), 's')
105 if s in self.disconnected_servers or s in self.interfaces.keys():
108 choice_list.append(s)
110 if not choice_list: return
112 server = random.choice( choice_list )
116 def get_servers(self):
118 return DEFAULT_SERVERS
123 def start_interface(self, server):
124 if server in self.interfaces.keys():
126 i = interface.Interface({'server':server, 'path':self.config.path, 'proxy':self.proxy})
127 self.interfaces[server] = i
130 def start_random_interface(self):
131 server = self.random_server()
133 self.start_interface(server)
135 def start_interfaces(self):
136 if self.default_server:
137 self.start_interface(self.default_server)
138 self.interface = self.interfaces[self.default_server]
141 self.start_random_interface()
143 if not self.interface:
144 self.interface = self.interfaces.values()[0]
147 def start(self, wait=False):
148 self.start_interfaces()
149 threading.Thread.start(self)
151 self.interface.connect_event.wait()
152 return self.interface.is_connected
155 def set_proxy(self, proxy):
159 def set_server(self, server):
160 if self.default_server == server:
163 # stop the interface in order to terminate subscriptions
164 self.interface.stop()
166 self.trigger_callback('disconnecting')
168 self.default_server = server
170 if server in self.interfaces.keys():
171 self.interface = self.interfaces[server]
172 self.send_subscriptions()
174 self.start_interface(server)
175 self.interface = self.interfaces[server]
182 self.blockchain.start()
187 while self.is_running():
191 i.send([ ('blockchain.headers.subscribe',[])], self.on_header)
192 if i == self.interface:
193 self.send_subscriptions()
194 self.trigger_callback('connected')
196 self.disconnected_servers.append(i.server)
197 self.interfaces.pop(i.server)
198 self.start_random_interface()
200 if i == self.interface:
201 if self.config.get('auto_cycle'):
202 self.interface = random.choice(self.interfaces.values())
203 self.config.set_key('server', self.interface.server, False)
205 self.trigger_callback('disconnected')
207 def on_header(self, i, r):
208 result = r.get('result')
209 if not result: return
210 self.heights[i.server] = result.get('block_height')
211 self.blockchain.queue.put((i,result))
213 def on_peers(self, i, r):
215 self.servers = self.parse_servers(r.get('result'))
216 self.trigger_callback('peers')
218 def on_banner(self, i, r):
219 self.banner = r.get('result')
220 self.trigger_callback('banner')
223 with self.lock: self.running = False
225 def is_running(self):
226 with self.lock: return self.running
229 def retrieve_transaction(self, tx_hash, tx_height=0):
231 r = self.interface.synchronous_get([ ('blockchain.transaction.get',[tx_hash, tx_height]) ])[0]
233 return transaction.Transaction(r)
236 def parse_servers(self, result):
237 """ parse servers list into dict format"""
238 from version import PROTOCOL_VERSION
247 if re.match("[stgh]\d*", v):
248 protocol, port = v[0], v[1:]
249 if port == '': port = DEFAULT_PORTS[protocol]
251 elif re.match("v(.?)+", v):
253 elif re.match("p\d*", v):
254 pruning_level = v[1:]
255 if pruning_level == '': pruning_level = '0'
257 is_recent = float(version)>=float(PROTOCOL_VERSION)
261 if out and is_recent:
262 out['pruning'] = pruning_level
270 if __name__ == "__main__":
272 config = simple_config.SimpleConfig({'verbose':True, 'server':'ecdsa.org:50002:s'})
273 network = Network(config)