def _target(self, job_id, extranonce2, ntime, preheader_bin):
try:
start = time.time()
X, Y = sha.precalc(preheader_bin)
if sys.maxint > 2**32:
max_nonce = 2**32
else:
max_nonce = 2**31 - 1
i = 0
while i < max_nonce:
if i % 1000 == 0:
print i, "%.1f kh/s" % (i * .001 / (time.time() - start + .001))
if self._quit:
print "QUITTING WORKER"
break
nonce_bin = struct.pack(">I", i)
if TEST:
nonce_bin = "b2957c02".decode("hex")[::-1]
# header_bin = preheader_bin + nonce_bin
# hash_bin = doublesha(header_bin)
# assert hash_bin == finish_dsha(first_sha, nonce_bin)
hash_bin = sha.finish_dsha(X, Y, nonce_bin)
val = struct.unpack("<I", hash_bin[-4:])[0]
if val < THRESH:
nonce = nonce_bin[::-1].encode("hex")
print nonce, extranonce2, ntime
print hash_bin.encode("hex")
hash_int = uint256_from_str(hash_bin)
block_hash_hex = "%064x" % hash_int
print block_hash_hex
self._cl.submit(job_id, extranonce2, ntime, nonce)
break
elif val < THRESH*10:
print "almost: %d (<%d)" % (val, THRESH)
i += 1
# elif i == 0:
# print hash_bin.encode("hex")
self._done_ev.set()
except:
traceback.print_exc()
os._exit(1)
def winning_nonces_gen(self, _X, Y):
while True:
while self.last_msg is None:
yield None
time.sleep(.01)
m = self.last_msg
self.last_msg = None
assert m[0] == '\xaa'
nonce = m[1:5]
print "raw nonce: %s" % (nonce.encode("hex"),)
assert m[5] == '\xaa'
real_digest = sha.finish_dsha(_X, Y, nonce)
print "gives digest: %s" % (real_digest.encode("hex"),)
# assert digest == real_digest, (digest.encode("hex"), real_digest.encode("hex"))
assert real_digest.endswith("\x00\x00")
yield nonce[::-1]
def winning_nonces_gen(self, _X, Y):
while True:
while self.last_msg is None:
yield None
time.sleep(.01)
m = self.last_msg
self.last_msg = None
assert m[0] == '\xaa'
nonce = m[1:5]
print "raw nonce: %s" % (nonce.encode("hex"), )
assert m[5] == '\xaa'
real_digest = sha.finish_dsha(_X, Y, nonce)
print "gives digest: %s" % (real_digest.encode("hex"), )
# assert digest == real_digest, (digest.encode("hex"), real_digest.encode("hex"))
assert real_digest.endswith("\x00\x00")
yield nonce[::-1]