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HttpTransport.py
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HttpTransport.py
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from Transport import Transport
from base64 import b64encode
from json import dumps, loads
from log import *
from sha256 import *
from threading import Thread
from time import sleep, time
from urlparse import urlsplit
from util import *
import httplib
import traceback
class NotAuthorized(Exception): pass
class RPCError(Exception): pass
class HttpTransport(Transport):
def __init__(self, miner, phatk2):
self.connection = self.lp_connection = None
super(HttpTransport, self).__init__(miner)
self.timeout = 5
self.long_poll_timeout = 3600
self.long_poll_max_askrate = 60 - self.timeout
self.max_redirects = 3
self.phatk2 = phatk2
self.postdata = {'method': 'getwork', 'id': 'json'}
self.long_poll_active = False
self.long_poll_url = ''
def loop(self):
self.should_stop = False
thread = Thread(target=self.long_poll_thread)
thread.daemon = True
thread.start()
while True:
if self.should_stop: return
try:
with self.lock:
update = self.update = (self.update or (time() - self.last_work) > if_else(self.long_poll_active, self.long_poll_max_askrate, self.config.askrate))
if update:
work = self.getwork()
if self.update:
self.queue_work(work)
while not self.result_queue.empty():
result = self.result_queue.get(False)
with self.lock:
rv = self.send(result)
sleep(1)
except Exception:
say_line("Unexpected error:")
traceback.print_exc()
def connect(self, proto, host, timeout):
if proto == 'https': connector = httplib.HTTPSConnection
else: connector = httplib.HTTPConnection
return connector(host, strict=True, timeout=timeout)
def request(self, connection, url, headers, data=None):
result = response = None
try:
if data: connection.request('POST', url, data, headers)
else: connection.request('GET', url, headers=headers)
response = connection.getresponse()
if response.status == httplib.UNAUTHORIZED: raise NotAuthorized()
r = self.max_redirects
while response.status == httplib.TEMPORARY_REDIRECT:
response.read()
url = response.getheader('Location', '')
if r == 0 or url == '': raise HTTPException('Too much or bad redirects')
connection.request('GET', url, headers=headers)
response = connection.getresponse();
r -= 1
self.long_poll_url = response.getheader('X-Long-Polling', '')
#self.miner.update_time = bool(response.getheader('X-Roll-NTime', ''))
hostList = response.getheader('X-Host-List', '')
if (not self.config.nsf) and hostList: self.add_servers(loads(hostList))
result = loads(response.read())
if result['error']: raise RPCError(result['error']['message'])
return (connection, result)
finally:
if not result or not response or (response.version == 10 and response.getheader('connection', '') != 'keep-alive') or response.getheader('connection', '') == 'close':
connection.close()
connection = None
def getwork(self, data=None):
save_server = None
try:
if self.server != self.servers[0] and self.config.failback > 0:
if self.failback_getwork_count >= self.config.failback:
save_server = self.server
say_line("Attempting to fail back to primary server")
self.set_server(self.servers[0])
self.failback_getwork_count += 1
if not self.connection:
self.connection = self.connect(self.proto, self.host, self.timeout)
self.postdata['params'] = if_else(data, [data], [])
(self.connection, result) = self.request(self.connection, '/', self.headers, dumps(self.postdata))
self.errors = 0
if self.server == self.servers[0]:
self.backup_server_index = 1
self.failback_getwork_count = 0
self.failback_attempt_count = 0
return result['result']
except NotAuthorized:
self.failure('Wrong username or password')
except RPCError as e:
say('%s', e)
except (IOError, httplib.HTTPException, ValueError):
if save_server:
self.failback_attempt_count += 1
self.set_server(save_server)
say_line('Still unable to reconnect to primary server (attempt %s), failing over', self.failback_attempt_count)
self.failback_getwork_count = 0
return
say('Problems communicating with bitcoin RPC %s %s', (self.errors, self.config.tolerance))
self.errors += 1
if self.errors > self.config.tolerance + 1:
self.errors = 0
if self.backup_server_index >= len(self.servers):
say_line("No more backup pools left. Using primary and starting over.")
pool = self.servers[0]
self.backup_server_index = 1
else:
pool = self.servers[self.backup_server_index]
self.backup_server_index += 1
self.set_server(pool)
def send_internal(self, result, nonce):
data = ''.join([result.header.encode('hex'), pack('III', long(result.time), long(result.difficulty), long(nonce)).encode('hex'), '000000800000000000000000000000000000000000000000000000000000000000000000000000000000000080020000'])
accepted = self.getwork(data)
if accepted != None:
self.report(nonce, accepted)
def long_poll_thread(self):
last_host = None
while True:
sleep(1)
url = self.long_poll_url
if url != '':
proto = self.proto
host = self.host
parsedUrl = urlsplit(url)
if parsedUrl.scheme != '':
proto = parsedUrl.scheme
if parsedUrl.netloc != '':
host = parsedUrl.netloc
url = url[url.find(host) + len(host):]
if url == '': url = '/'
try:
if host != last_host: self.close_lp_connection()
if not self.lp_connection:
self.lp_connection = self.connect(proto, host, self.long_poll_timeout)
say_line("LP connected to %s", self.server[4])
last_host = host
self.long_poll_active = True
(self.lp_connection, result) = self.request(self.lp_connection, url, self.headers)
self.long_poll_active = False
if self.should_stop:
return
self.queue_work(result['result'])
if self.config.verbose:
say_line('long poll: new block %s%s', (result['result']['data'][56:64], result['result']['data'][48:56]))
except NotAuthorized:
say_line('long poll: Wrong username or password')
except RPCError as e:
say_line('long poll: %s', e)
except (IOError, httplib.HTTPException, ValueError):
say_line('long poll: IO error')
#traceback.print_exc()
self.close_lp_connection()
self.long_poll_active = False
def stop(self):
self.should_stop = True
self.close_lp_connection()
def set_server(self, server):
super(HttpTransport, self).set_server(server)
user, pwd = server[1:3]
self.headers = {"User-Agent": self.user_agent, "Authorization": 'Basic ' + b64encode('%s:%s' % (user, pwd))}
self.long_poll_url = ''
if self.connection:
self.connection.close()
self.connection = None
self.close_lp_connection()
def close_lp_connection(self):
if self.lp_connection:
self.lp_connection.close()
self.lp_connection = None
def decode(self, work):
if work:
job = Object()
if not 'target' in work:
work['target'] = 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000'
binary_data = work['data'].decode('hex')
data0 = np.zeros(64, np.uint32)
data0 = np.insert(data0, [0] * 16, unpack('IIIIIIIIIIIIIIII', binary_data[:64]))
job.target = np.array(unpack('IIIIIIII', work['target'].decode('hex')), dtype=np.uint32)
job.header = binary_data[:68]
job.merkle_end = np.uint32(unpack('I', binary_data[64:68])[0])
job.time = np.uint32(unpack('I', binary_data[68:72])[0])
job.difficulty = np.uint32(unpack('I', binary_data[72:76])[0])
job.state = sha256(STATE, data0)
job.f = np.zeros(9, np.uint32)
job.state2 = partial(job.state, job.merkle_end, job.time, job.difficulty, job.f)
job.targetQ = 2**256 / int(''.join(list(chunks(work['target'], 2))[::-1]), 16)
if self.phatk2:
calculateF2(job.state, job.merkle_end, job.time, job.difficulty, job.f, job.state2)
else:
calculateF(job.state, job.merkle_end, job.time, job.difficulty, job.f, job.state2)
return job