LBRY-Vault/lib/websockets.py
Harm Aarts ab2f59590c Push network calls into network module
Eventually all network calls should go through the network module
without resorting to using raw protocol strings. This, then, makes
adding an other backend easier.
Please note that the behaviour slightly changed. Initially the caller
received an unmodified response from the ElectrumX server. In it the
scripthash is present. This change replaces that scripthash with the
original address.
2018-05-17 15:20:22 +02:00

136 lines
4.7 KiB
Python

#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2015 Thomas Voegtlin
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import queue
import threading, os, json
from collections import defaultdict
try:
from SimpleWebSocketServer import WebSocket, SimpleSSLWebSocketServer
except ImportError:
import sys
sys.exit("install SimpleWebSocketServer")
from . import util
request_queue = queue.Queue()
class ElectrumWebSocket(WebSocket):
def handleMessage(self):
assert self.data[0:3] == 'id:'
util.print_error("message received", self.data)
request_id = self.data[3:]
request_queue.put((self, request_id))
def handleConnected(self):
util.print_error("connected", self.address)
def handleClose(self):
util.print_error("closed", self.address)
class WsClientThread(util.DaemonThread):
def __init__(self, config, network):
util.DaemonThread.__init__(self)
self.network = network
self.config = config
self.response_queue = queue.Queue()
self.subscriptions = defaultdict(list)
def make_request(self, request_id):
# read json file
rdir = self.config.get('requests_dir')
n = os.path.join(rdir, 'req', request_id[0], request_id[1], request_id, request_id + '.json')
with open(n, encoding='utf-8') as f:
s = f.read()
d = json.loads(s)
addr = d.get('address')
amount = d.get('amount')
return addr, amount
def reading_thread(self):
while self.is_running():
try:
ws, request_id = request_queue.get()
except queue.Empty:
continue
try:
addr, amount = self.make_request(request_id)
except:
continue
l = self.subscriptions.get(addr, [])
l.append((ws, amount))
self.subscriptions[addr] = l
self.network.subscribe_to_addresses([addr], self.response_queue.put)
def run(self):
threading.Thread(target=self.reading_thread).start()
while self.is_running():
try:
r = self.response_queue.get(timeout=0.1)
except queue.Empty:
continue
util.print_error('response', r)
method = r.get('method')
params = r.get('params')
result = r.get('result')
if result is None:
continue
if method == 'blockchain.scripthash.subscribe':
self.network.send([('blockchain.scripthash.get_balance', params)], self.response_queue.put)
elif method == 'blockchain.scripthash.get_balance':
h = params[0]
addr = self.network.h2addr.get(h, None)
if addr is None:
util.print_error("can't find address for scripthash: %s" % h)
l = self.subscriptions.get(addr, [])
for ws, amount in l:
if not ws.closed:
if sum(result.values()) >=amount:
ws.sendMessage('paid')
class WebSocketServer(threading.Thread):
def __init__(self, config, ns):
threading.Thread.__init__(self)
self.config = config
self.net_server = ns
self.daemon = True
def run(self):
t = WsClientThread(self.config, self.net_server)
t.start()
host = self.config.get('websocket_server')
port = self.config.get('websocket_port', 9999)
certfile = self.config.get('ssl_chain')
keyfile = self.config.get('ssl_privkey')
self.server = SimpleSSLWebSocketServer(host, port, ElectrumWebSocket, certfile, keyfile)
self.server.serveforever()