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#!/usr/bin/env python
from electrum import Interface, SimpleConfig, set_verbosity
from electrum.network import DEFAULT_SERVERS, filter_protocol
import time, Queue
from collections import defaultdict
set_verbosity(False)
config = SimpleConfig()
servers = filter_protocol(DEFAULT_SERVERS,'t')
interfaces = map ( lambda server: Interface(server, config), servers )
q = Queue.Queue()
results_queue = Queue.Queue()
for i in interfaces: i.start(q)
reached_servers = []
while servers:
i = q.get(timeout=1000)
servers.remove(i.server)
if i.is_connected:
i.send([('blockchain.headers.subscribe',[])], lambda i,x: results_queue.put((i,x)))
reached_servers.append(i.server)
i.status = "ok"
else:
i.status = "unreachable"
d = defaultdict(int)
while reached_servers:
i, r = results_queue.get(timeout=1000)
i.blocks = r.get('result').get('block_height')
d[i.blocks] += 1
reached_servers.remove(i.server)
v = d.values()
numblocks = d.keys()[v.index(max(v))]
for i in interfaces:
if i.status == "ok":
if abs(i.blocks-numblocks)>1: i.status = "lagging"
else:
i.blocks = 0
print "%30s %d %s "%(i.host, i.blocks, i.status)