Python math.perfect_round函数代码示例

 def compute(request):
     state = current_work.value
     user = worker_interface.get_username(request)
     
     payout_script = get_payout_script_from_username(user)
     if payout_script is None or random.uniform(0, 100) < args.worker_fee:
         payout_script = my_script
     
     if len(p2p_node.peers) == 0 and net.PERSIST:
         raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
     if state['best_share_hash'] is None and net.PERSIST:
         raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
     if time.time() > current_work2.value['last_update'] + 60:
         raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
     
     previous_share = None if state['best_share_hash'] is None else tracker.shares[state['best_share_hash']]
     subsidy = current_work2.value['subsidy']
     share_info, generate_tx = p2pool_data.generate_transaction(
         tracker=tracker,
         share_data=dict(
             previous_share_hash=state['best_share_hash'],
             coinbase='' if state['aux_work'] is None else '\xfa\xbemm' + bitcoin_data.HashType().pack(state['aux_work']['hash'])[::-1] + struct.pack('<ii', 1, 0),
             nonce=run_identifier + struct.pack('<Q', random.randrange(2**64)),
             new_script=payout_script,
             subsidy=subsidy,
             donation=math.perfect_round(65535*args.donation_percentage/100),
             stale_frac=(lambda shares, stales:
                 255 if shares == 0 else math.perfect_round(254*stales/shares)
             )(*get_share_counts()),
         ),
         block_target=state['target'],
         desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
         net=net,
     )
     
     print 'New work for worker %s! Difficulty: %.06f Payout if block: %.6f %s Total block value: %.6f %s including %i transactions' % (
         user,
         bitcoin_data.target_to_difficulty(share_info['target']),
         (sum(t['value'] for t in generate_tx['tx_outs'] if t['script'] == payout_script) - subsidy//200)*1e-8, net.BITCOIN_SYMBOL,
         subsidy*1e-8, net.BITCOIN_SYMBOL,
         len(current_work2.value['transactions']),
     )
     
     transactions = [generate_tx] + list(current_work2.value['transactions'])
     merkle_root = bitcoin_data.merkle_hash(transactions)
     merkle_root_to_transactions[merkle_root] = share_info, transactions, time.time()
     
     return bitcoin_getwork.BlockAttempt(state['version'], state['previous_block'], merkle_root, current_work2.value['time'], state['target'], share_info['target']), state['best_share_hash']

    def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
        if self.node.best_share_var.value is None and self.node.net.PERSIST:
            raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
        
        if self.merged_work.value:
            tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
            mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
            mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
                merkle_root=bitcoin_data.merkle_hash(mm_hashes),
                size=size,
                nonce=0,
            ))
            mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
        else:
            mm_data = ''
            mm_later = []
        
        tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
        tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
        
        previous_share = self.node.tracker.items[self.node.best_share_var.value] if self.node.best_share_var.value is not None else None
        if previous_share is None:
            share_type = p2pool_data.Share
        else:
            previous_share_type = type(previous_share)
            
            if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
                share_type = previous_share_type
            else:
                successor_type = previous_share_type.SUCCESSOR
                
                counts = p2pool_data.get_desired_version_counts(self.node.tracker,
                    self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
                upgraded = counts.get(successor_type.VERSION, 0)/sum(counts.itervalues())
                if upgraded > .65:
                    print 'Switchover imminent. Upgraded: %.3f%% Threshold: %.3f%%' % (upgraded*100, 95)
                print 
                # Share -> NewShare only valid if 95% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
                if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues())*95//100:
                    share_type = successor_type
                else:
                    share_type = previous_share_type
        
        if desired_share_target is None:
            desired_share_target = 2**256-1  # will be reduced to SANE_TARGET_RANGE later
            local_hash_rate = self._estimate_local_hash_rate()
            if local_hash_rate is not None:
                desired_share_target = min(desired_share_target,
                    bitcoin_data.average_attempts_to_target(local_hash_rate * self.node.net.SHARE_PERIOD / 0.0167)) # limit to 1.67% of pool shares by modulating share difficulty
           
            local_addr_rates = self.get_local_addr_rates()
            lookbehind = 3600//self.node.net.SHARE_PERIOD
            block_subsidy = self.node.bitcoind_work.value['subsidy']
            if previous_share is not None and self.node.tracker.get_height(previous_share.hash) > lookbehind:
                expected_payout_per_block = local_addr_rates.get(pubkey_hash, 0)/p2pool_data.get_pool_attempts_per_second(self.node.tracker, self.node.best_share_var.value, lookbehind) \
                    * block_subsidy*(1-self.donation_percentage/100) # XXX doesn't use global stale rate to compute pool hash
                if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
                    desired_share_target = min(desired_share_target,
                        bitcoin_data.average_attempts_to_target((bitcoin_data.target_to_average_attempts(self.node.bitcoind_work.value['bits'].target)*self.node.net.SPREAD)*self.node.net.PARENT.DUST_THRESHOLD/block_subsidy)
                    )
	
        
        if True:
            share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
                tracker=self.node.tracker,
                share_data=dict(
                    previous_share_hash=self.node.best_share_var.value,
                    coinbase=(script.create_push_script([
                        self.current_work.value['height'],
                        ] + ([mm_data] if mm_data else []) + [
                    ]) + self.current_work.value['coinbaseflags'])[:100],
                    nonce=random.randrange(2**32),
                    pubkey_hash=pubkey_hash,
                    subsidy=self.current_work.value['subsidy'],
                    donation=math.perfect_round(65535*self.donation_percentage/100),
                    stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
                        'orphan' if orphans > orphans_recorded_in_chain else
                        'doa' if doas > doas_recorded_in_chain else
                        None
                    )(*self.get_stale_counts()),
                    desired_version=(share_type.SUCCESSOR if share_type.SUCCESSOR is not None else share_type).VOTING_VERSION,
                ),
                block_target=self.current_work.value['bits'].target,
                desired_timestamp=int(time.time() + 0.5),
                desired_target=desired_share_target,
                ref_merkle_link=dict(branch=[], index=0),
                desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value['transaction_fees']),
                net=self.node.net,
                known_txs=tx_map,
                base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value['height']),
            )
		    
		    
       
        
        
        packed_gentx = bitcoin_data.tx_type.pack(gentx)
        other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
        
        mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] == 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
#.........这里部分代码省略.........

    def get_work(self, pubkey, desired_share_target, desired_pseudoshare_target):
        if (self.node.p2p_node is None or len(self.node.p2p_node.peers) == 0) and self.node.net.PERSIST:
            raise jsonrpc.Error_for_code(-12345)(u'p2pool is not connected to any peers')
        if self.node.best_share_var.value is None and self.node.net.PERSIST:
            raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
        if time.time() > self.current_work.value['last_update'] + 60:
            raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
        
        if self.merged_work.value:
            tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
            mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
            mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
                merkle_root=bitcoin_data.merkle_hash(mm_hashes),
                size=size,
                nonce=0,
            ))
            mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
        else:
            mm_data = ''
            mm_later = []
        
        tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
        tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
        txn_timestamp = self.current_work.value['txn_timestamp']
        
        #print
        #print txn_timestamp
        #print
        
        if self.node.best_share_var.value is None:
            share_type = p2pool_data.Share
        else:
            previous_share = self.node.tracker.items[self.node.best_share_var.value]
            previous_share_type = type(previous_share)
            
            if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
                share_type = previous_share_type
            else:
                successor_type = previous_share_type.SUCCESSOR
                
                counts = p2pool_data.get_desired_version_counts(self.node.tracker,
                    self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
                # Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
                if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues())*95//100:
                    share_type = successor_type
                else:
                    share_type = previous_share_type
        
        if True:
            subsidy = self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value['bits'].target)
            desired_timestamp = int(time.time() + 0.5)

            share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
                tracker=self.node.tracker,
                share_data=dict(
                    previous_share_hash=self.node.best_share_var.value,
                    coinbase=(script.create_push_script([
                        self.current_work.value['height'],
                        ] + ([mm_data] if mm_data else []) + [
                    ]) + self.current_work.value['coinbaseflags'])[:100],
                    nonce=random.randrange(2**32),
                    pubkey=pubkey,
                    subsidy=self.current_work.value['subsidy'],
                    donation=math.perfect_round(65535*self.donation_percentage/100),
                    stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
                        'orphan' if orphans > orphans_recorded_in_chain else
                        'doa' if doas > doas_recorded_in_chain else
                        None
                    )(*self.get_stale_counts()),
                    desired_version=14,
                ),
                block_target=self.current_work.value['bits'].target,
                desired_timestamp=desired_timestamp if txn_timestamp < desired_timestamp else txn_timestamp + 1,
                desired_target=desired_share_target,
                ref_merkle_link=dict(branch=[], index=0),
                desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value['transaction_fees']),
                net=self.node.net,
                known_txs=tx_map,
                base_subsidy=subsidy
            )
        
        packed_gentx = bitcoin_data.tx_type.pack(gentx)
        other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
        
        mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] != 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
        
        if desired_pseudoshare_target is None:
            target = 2**256-1
            if len(self.recent_shares_ts_work) == 50:
                hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
                if hash_rate:
                    target = min(target, int(2**256/hash_rate))
        else:
            target = desired_pseudoshare_target
        target = max(target, share_info['bits'].target)
        for aux_work, index, hashes in mm_later:
            target = max(target, aux_work['target'])
        target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
        
        getwork_time = time.time()
#.........这里部分代码省略.........

#.........这里部分代码省略.........
                    / p2pool_data.get_pool_attempts_per_second(
                        self.node.tracker, self.node.best_share_var.value, lookbehind
                    )
                    * block_subsidy
                    * (1 - self.donation_percentage / 100)
                )  # XXX doesn't use global stale rate to compute pool hash
                if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
                    desired_share_target = min(
                        desired_share_target,
                        bitcoin_data.average_attempts_to_target(
                            (
                                bitcoin_data.target_to_average_attempts(self.node.bitcoind_work.value["bits"].target)
                                * self.node.net.SPREAD
                            )
                            * self.node.net.PARENT.DUST_THRESHOLD
                            / block_subsidy
                        ),
                    )

        if True:
            share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
                tracker=self.node.tracker,
                share_data=dict(
                    previous_share_hash=self.node.best_share_var.value,
                    coinbase=(
                        script.create_push_script(
                            [self.current_work.value["height"]] + ([mm_data] if mm_data else []) + []
                        )
                        + self.current_work.value["coinbaseflags"]
                    )[:100],
                    nonce=random.randrange(2 ** 32),
                    pubkey_hash=pubkey_hash,
                    subsidy=self.current_work.value["subsidy"],
                    donation=math.perfect_round(65535 * self.donation_percentage / 100),
                    stale_info=(
                        lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain): "orphan"
                        if orphans > orphans_recorded_in_chain
                        else "doa"
                        if doas > doas_recorded_in_chain
                        else None
                    )(*self.get_stale_counts()),
                    desired_version=(
                        share_type.SUCCESSOR if share_type.SUCCESSOR is not None else share_type
                    ).VOTING_VERSION,
                ),
                block_target=self.current_work.value["bits"].target,
                desired_timestamp=int(time.time() + 0.5),
                desired_target=desired_share_target,
                ref_merkle_link=dict(branch=[], index=0),
                desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value["transaction_fees"]),
                net=self.node.net,
                known_txs=tx_map,
                base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value["height"]),
            )

        packed_gentx = bitcoin_data.tx_type.pack(gentx)
        other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]

        mm_later = [
            (
                dict(
                    aux_work, target=aux_work["target"] if aux_work["target"] != "p2pool" else share_info["bits"].target
                ),
                index,
                hashes,
            )

    def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
        if (self.node.p2p_node is None or len(self.node.p2p_node.peers) == 0) and self.node.net.PERSIST:
            raise jsonrpc.Error_for_code(-12345)(u"p2pool is not connected to any peers")
        if self.node.best_share_var.value is None and self.node.net.PERSIST:
            raise jsonrpc.Error_for_code(-12345)(u"p2pool is downloading shares")
        if time.time() > self.current_work.value["last_update"] + 60:
            raise jsonrpc.Error_for_code(-12345)(u"lost contact with bitcoind")

        if self.merged_work.value:
            tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
            mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))["hash"] for i in xrange(size)]
            mm_data = "\xfa\xbemm" + bitcoin_data.aux_pow_coinbase_type.pack(
                dict(merkle_root=bitcoin_data.merkle_hash(mm_hashes), size=size, nonce=0)
            )
            mm_later = [
                (aux_work, mm_hashes.index(aux_work["hash"]), mm_hashes)
                for chain_id, aux_work in self.merged_work.value.iteritems()
            ]
        else:
            mm_data = ""
            mm_later = []

        tx_hashes = [
            bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value["transactions"]
        ]
        tx_map = dict(zip(tx_hashes, self.current_work.value["transactions"]))

        if self.node.best_share_var.value is None:
            share_type = p2pool_data.Share
        else:
            previous_share = self.node.tracker.items[self.node.best_share_var.value]
            previous_share_type = type(previous_share)

            if (
                previous_share_type.SUCCESSOR is None
                or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH
            ):
                share_type = previous_share_type
            else:
                successor_type = previous_share_type.SUCCESSOR

                counts = p2pool_data.get_desired_version_counts(
                    self.node.tracker,
                    self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH * 9 // 10),
                    self.node.net.CHAIN_LENGTH // 10,
                )
                # Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
                if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues()) * 95 // 100:
                    share_type = successor_type
                else:
                    share_type = previous_share_type

        if True:
            share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
                tracker=self.node.tracker,
                share_data=dict(
                    previous_share_hash=self.node.best_share_var.value,
                    coinbase=(
                        script.create_push_script(
                            [self.current_work.value["height"]] + ([mm_data] if mm_data else []) + []
                        )
                        + self.current_work.value["coinbaseflags"]
                    )[:100],
                    nonce=random.randrange(2 ** 32),
                    pubkey_hash=pubkey_hash,
                    subsidy=self.current_work.value["subsidy"],
                    donation=math.perfect_round(65535 * self.donation_percentage / 100),
                    stale_info=(
                        lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain): "orphan"
                        if orphans > orphans_recorded_in_chain
                        else "doa"
                        if doas > doas_recorded_in_chain
                        else None
                    )(*self.get_stale_counts()),
                    desired_version=share_type.SUCCESSOR.VERSION
                    if share_type.SUCCESSOR is not None
                    else share_type.VERSION,
                ),
                block_target=self.current_work.value["bits"].target,
                desired_timestamp=int(time.time() + 0.5),
                desired_target=desired_share_target,
                ref_merkle_link=dict(branch=[], index=0),
                desired_other_transaction_hashes=tx_hashes,
                net=self.node.net,
                known_txs=tx_map,
            )

        transactions = [gentx] + [tx_map[tx_hash] for tx_hash in other_transaction_hashes]

        mm_later = [
            (
                dict(
                    aux_work, target=aux_work["target"] if aux_work["target"] != "p2pool" else share_info["bits"].target
                ),
                index,
                hashes,
            )
            for aux_work, index, hashes in mm_later
        ]

#.........这里部分代码省略.........

 def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
     if len(self.p2p_node.peers) == 0 and self.net.PERSIST:
         raise jsonrpc.Error_for_code(-12345)(u'p2pool is not connected to any peers')
     if self.best_share_var.value is None and self.net.PERSIST:
         raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
     if time.time() > self.current_work.value['last_update'] + 60:
         raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
     
     if self.merged_work.value:
         tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
         mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
         mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
             merkle_root=bitcoin_data.merkle_hash(mm_hashes),
             size=size,
             nonce=0,
         ))
         mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
     else:
         mm_data = ''
         mm_later = []
     
     tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
     tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
     
     if True:
         share_info, gentx, other_transaction_hashes, get_share = p2pool_data.Share.generate_transaction(
             tracker=self.tracker,
             share_data=dict(
                 previous_share_hash=self.best_share_var.value,
                 coinbase=(script.create_push_script([
                     self.current_work.value['height'],
                     ] + ([mm_data] if mm_data else []) + [
                 ]) + self.current_work.value['coinbaseflags'])[:100],
                 nonce=random.randrange(2**32),
                 pubkey_hash=pubkey_hash,
                 subsidy=self.current_work.value['subsidy'],
                 donation=math.perfect_round(65535*self.donation_percentage/100),
                 stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
                     'orphan' if orphans > orphans_recorded_in_chain else
                     'doa' if doas > doas_recorded_in_chain else
                     None
                 )(*self.get_stale_counts()),
                 desired_version=5,
             ),
             block_target=self.current_work.value['bits'].target,
             desired_timestamp=int(time.time() + 0.5),
             desired_target=desired_share_target,
             ref_merkle_link=dict(branch=[], index=0),
             other_transaction_hashes=tx_hashes,
             net=self.net,
         )
     
     transactions = [gentx] + [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
     
     mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] != 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
     
     if desired_pseudoshare_target is None:
         target = 2**256-1
         if len(self.recent_shares_ts_work) == 50:
             hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
             if hash_rate:
                 target = min(target, int(2**256/hash_rate))
     else:
         target = desired_pseudoshare_target
     target = max(target, share_info['bits'].target)
     for aux_work, index, hashes in mm_later:
         target = max(target, aux_work['target'])
     target = math.clip(target, self.net.PARENT.SANE_TARGET_RANGE)
     
     getwork_time = time.time()
     lp_count = self.new_work_event.times
     merkle_link = bitcoin_data.calculate_merkle_link([bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in transactions], 0)
     
     print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
         bitcoin_data.target_to_difficulty(target),
         bitcoin_data.target_to_difficulty(share_info['bits'].target),
         self.current_work.value['subsidy']*1e-8, self.net.PARENT.SYMBOL,
         len(self.current_work.value['transactions']),
     )
     
     ba = bitcoin_getwork.BlockAttempt(
         version=min(self.current_work.value['version'], 2),
         previous_block=self.current_work.value['previous_block'],
         merkle_root=bitcoin_data.check_merkle_link(bitcoin_data.hash256(bitcoin_data.tx_type.pack(transactions[0])), merkle_link),
         timestamp=self.current_work.value['time'],
         bits=self.current_work.value['bits'],
         share_target=target,
     )
     
     received_header_hashes = set()
     
     def got_response(header, request):
         header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
         pow_hash = self.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
         try:
             if pow_hash <= header['bits'].target or p2pool.DEBUG:
                 self.submit_block(dict(header=header, txs=transactions), ignore_failure=False)
                 if pow_hash <= header['bits'].target:
                     print
                     print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
#.........这里部分代码省略.........