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 def register_callback(self, event, callback):
66 if not self.callbacks.get(event):
67 self.callbacks[event] = []
68 self.callbacks[event].append(callback)
71 def trigger_callback(self, event):
73 callbacks = self.callbacks.get(event,[])[:]
75 [callback() for callback in callbacks]
78 def random_server(self):
80 l = filter_protocol(self.get_servers(), 's')
82 if s in self.disconnected_servers or s in self.interfaces.keys():
87 if not choice_list: return
89 server = random.choice( choice_list )
93 def get_servers(self):
95 return DEFAULT_SERVERS
100 def start_interface(self, server):
101 if server in self.interfaces.keys():
103 i = interface.Interface({'server':server, 'path':self.config.path, 'proxy':self.proxy})
104 self.interfaces[server] = i
107 def start_random_interface(self):
108 server = self.random_server()
110 self.start_interface(server)
112 def start_interfaces(self):
113 if self.default_server:
114 self.start_interface(self.default_server)
115 self.interface = self.interfaces[self.default_server]
118 self.start_random_interface()
120 if not self.interface:
121 self.interface = self.interfaces.values()[0]
124 def start(self, wait=False):
125 self.start_interfaces()
126 threading.Thread.start(self)
128 self.interface.connect_event.wait()
129 return self.interface.is_connected
132 def set_server(self, server, proxy):
133 if self.default_server == server:
137 self.default_server = server
139 self.start_interface(server)
140 self.interface = self.interfaces[server]
141 i.stop_subscriptions() # fixme: it should not stop all subscriptions, and send 'unsubscribe'
142 self.trigger_callback('disconnecting') # for actively disconnecting
146 self.blockchain.start()
151 while self.is_running():
155 i.send([ ('blockchain.headers.subscribe',[])], self.on_header)
156 if i == self.interface:
157 i.send([('server.banner',[])], self.on_banner)
158 i.send([('server.peers.subscribe',[])], self.on_peers)
159 self.trigger_callback('connected')
161 self.disconnected_servers.append(i.server)
162 self.interfaces.pop(i.server)
163 self.start_random_interface()
165 if i == self.interface:
166 if self.config.get('auto_cycle'):
167 self.interface = random.choice(self.interfaces.values())
168 self.config.set_key('server', self.interface.server, False)
170 self.trigger_callback('disconnected')
172 def on_header(self, i, r):
173 result = r.get('result')
174 if not result: return
175 self.heights[i.server] = result.get('block_height')
176 self.blockchain.queue.put((i,result))
178 def on_peers(self, i, r):
180 self.servers = self.parse_servers(r.get('result'))
181 self.trigger_callback('peers')
183 def on_banner(self, i, r):
184 self.banner = r.get('result')
185 self.trigger_callback('banner')
188 with self.lock: self.running = False
190 def is_running(self):
191 with self.lock: return self.running
194 def retrieve_transaction(self, tx_hash, tx_height=0):
196 r = self.interface.synchronous_get([ ('blockchain.transaction.get',[tx_hash, tx_height]) ])[0]
198 return transaction.Transaction(r)
201 def parse_servers(self, result):
202 """ parse servers list into dict format"""
203 from version import PROTOCOL_VERSION
212 if re.match("[stgh]\d*", v):
213 protocol, port = v[0], v[1:]
214 if port == '': port = DEFAULT_PORTS[protocol]
216 elif re.match("v(.?)+", v):
218 elif re.match("p\d*", v):
219 pruning_level = v[1:]
220 if pruning_level == '': pruning_level = '0'
222 is_recent = float(version)>=float(PROTOCOL_VERSION)
226 if out and is_recent:
227 out['pruning'] = pruning_level
235 if __name__ == "__main__":
237 config = simple_config.SimpleConfig({'verbose':True, 'server':'ecdsa.org:50002:s'})
238 network = Network(config)