def run_client(peer_list, block_list):
     block_chain = BlockChain()
     block_store = {}
     inv_collector = InvCollector()
     block_handler = BlockHandler(inv_collector, block_chain, block_store)
     for peer in peer_list:
         inv_collector.add_peer(peer)
         block_handler.add_peer(peer)
     for block in block_list:
         inv_collector.advertise_item(InvItem(ITEM_TYPE_BLOCK, block.hash()))
         block_store[block.hash()] = block
     while len(block_store) < 2:
         yield from asyncio.sleep(0.1)
     return block_store
Beispiel #2
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 def run_client(peer_list, block_list):
     block_chain = BlockChain()
     block_store = {}
     inv_collector = InvCollector()
     block_handler = BlockHandler(inv_collector, block_chain, block_store)
     for peer in peer_list:
         inv_collector.add_peer(peer)
         block_handler.add_peer(peer)
     for block in block_list:
         inv_collector.advertise_item(InvItem(ITEM_TYPE_BLOCK,
                                              block.hash()))
         block_store[block.hash()] = block
     while len(block_store) < 2:
         yield from asyncio.sleep(0.1)
     return block_store
Beispiel #3
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def test_simple_getheader():
    BLOCKS = make_blocks(20)
    blockchain1 = BlockChain()
    blockchain1.add_headers(BLOCKS)

    block_store = dict((b.hash(), b) for b in BLOCKS)

    peer1, peer2 = create_handshaked_peers()

    block_store = {}
    block_chain = BlockChain()
    inv_collector = InvCollector()
    block_handler = BlockHandler(inv_collector, block_chain, block_store)

    for block in BLOCKS:
        inv_collector.advertise_item(InvItem(ITEM_TYPE_BLOCK, block.hash()))
        block_store[block.hash()] = block
    block_chain.add_headers(BLOCKS)

    inv_collector.add_peer(peer1)
    block_handler.add_peer(peer1)

    @asyncio.coroutine
    def run_peer2():
        r = []
        headers = yield from standards.get_headers_hashes(
            peer2, after_block_hash=b'\0' * 32)
        r.append(headers)
        return r

    f2 = asyncio.Task(run_peer2())

    asyncio.get_event_loop().run_until_complete(asyncio.wait([f2]))

    r = f2.result()
    assert len(r) == 1
    assert [b.hash() for b in r[0]] == [b.hash() for b in BLOCKS]
def test_simple_getheader():
    BLOCKS = make_blocks(20)
    blockchain1 = BlockChain()
    blockchain1.add_headers(BLOCKS)

    block_store = dict((b.hash(), b) for b in BLOCKS)

    peer1, peer2 = create_handshaked_peers()

    block_store = {}
    block_chain = BlockChain()
    inv_collector = InvCollector()
    block_handler = BlockHandler(inv_collector, block_chain, block_store)

    for block in BLOCKS:
        inv_collector.advertise_item(InvItem(ITEM_TYPE_BLOCK, block.hash()))
        block_store[block.hash()] = block
    block_chain.add_headers(BLOCKS)

    inv_collector.add_peer(peer1)
    block_handler.add_peer(peer1)

    @asyncio.coroutine
    def run_peer2():
        r = []
        headers = yield from standards.get_headers_hashes(peer2, after_block_hash=b"\0" * 32)
        r.append(headers)
        return r

    f2 = asyncio.Task(run_peer2())

    asyncio.get_event_loop().run_until_complete(asyncio.wait([f2]))

    r = f2.result()
    assert len(r) == 1
    assert [b.hash() for b in r[0]] == [b.hash() for b in BLOCKS]
Beispiel #5
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def items_for_client(initial_blocks=[]):
    block_store = {}
    block_chain = BlockChain()
    blockfetcher = Blockfetcher()
    inv_collector = InvCollector()
    block_handler = BlockHandler(inv_collector, block_chain, block_store)
    fast_forward_add_peer = fast_forwarder_add_peer_f(block_chain)

    for block in initial_blocks:
        inv_collector.advertise_item(InvItem(ITEM_TYPE_BLOCK, block.hash()))
        block_store[block.hash()] = block
    block_chain.add_headers(initial_blocks)

    inv_q = inv_collector.new_inv_item_queue()
    ap = make_add_peer(fast_forward_add_peer, blockfetcher, block_handler,
                       inv_collector, block_chain, block_store)
    ap.block_getter_task = asyncio.Task(
        block_getter(inv_q, inv_collector, block_handler, block_chain,
                     block_store))
    return block_handler, block_chain, block_store, ap
Beispiel #6
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def main():
    parser = argparse.ArgumentParser(description="Watch Bitcoin network for new blocks.")
    parser.add_argument('-c', "--config-dir", help='The directory where config files are stored.')
    parser.add_argument(
        '-f', "--fast-forward", type=int,
        help="block index to fast-forward to (ie. don't download full blocks prior to this one)", default=0
    )
    parser.add_argument(
        '-d', "--depth", type=int,
        help="Minimum depth blocks must be buried before being dropped in blockdir", default=2
    )
    parser.add_argument( '-l', "--log-file", help="Path to log file", default=None)
    parser.add_argument("blockdir", help='The directory where new blocks are dropped.')

    asyncio.tasks._DEBUG = True
    logging.basicConfig(level=logging.DEBUG, format=LOG_FORMAT)
    logging.getLogger("asyncio").setLevel(logging.INFO)

    if 1:
        host_port_q = dns_bootstrap_host_port_q(MAINNET)
    else:
        host_port_q = asyncio.Queue()
        host_port_q.put_nowait(("127.0.0.1", 8333))

    args = parser.parse_args()

    if args.log_file:
        log_file(args.log_file)

    block_chain_store = BlockChainStore(args.config_dir)
    block_chain = BlockChain(did_lock_to_index_f=block_chain_store.did_lock_to_index)

    locker_task = block_chain_locker(block_chain)
    block_chain.add_nodes(block_chain_store.block_tuple_iterator())

    blockfetcher = Blockfetcher()
    inv_collector = InvCollector()

    block_store = TwoLevelDict()

    @asyncio.coroutine
    def _rotate(block_store):
        while True:
            block_store.rotate()
            yield from asyncio.sleep(1800)
    rotate_task = asyncio.Task(_rotate(block_store))

    blockhandler = BlockHandler(inv_collector, block_chain, block_store,
        should_download_f=lambda block_hash, block_index: block_index >= args.fast_forward)

    last_processed_block = max(get_last_processed_block(config_dir), args.fast_forward)
    update_last_processed_block(config_dir, last_processed_block)

    change_q = asyncio.Queue()
    from pycoinnet.util.BlockChain import _update_q
    block_chain.add_change_callback(lambda blockchain, ops: _update_q(change_q, ops))

    block_processor_task = asyncio.Task(
        block_processor(
            change_q, blockfetcher, args.config_dir, args.blockdir, args.depth)))

    fast_forward_add_peer = fast_forwarder_add_peer_f(block_chain)

    fetcher_task = asyncio.Task(new_block_fetcher(inv_collector, block_chain))

    def create_protocol_callback():
        peer = BitcoinPeerProtocol(MAINNET["MAGIC_HEADER"])
        install_pingpong_manager(peer)
        fetcher = Fetcher(peer)
        peer.add_task(run_peer(
            peer, fetcher, fast_forward_add_peer,
            blockfetcher, inv_collector, blockhandler))
        return peer

    connection_info_q = manage_connection_count(host_port_q, create_protocol_callback, 8)
    show_task = asyncio.Task(show_connection_info(connection_info_q))
    asyncio.get_event_loop().run_forever()
Beispiel #7
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    def __init__(self,
                 network,
                 host_port_q,
                 should_download_block_f,
                 block_chain_store,
                 blockchain_change_callback,
                 server_port=9999):
        """
        network:
            a value from pycoinnet.helpers.networks
        host_port_q:
            a Queue that is being fed potential places to connect
        should_download_block_f:
            a function that accepting(block_hash, block_index) and returning a boolean
            indicating whether that block should be downloaded. Only used during fast-forward.
        block_chain_store:
            usually a BlockChainStore instance
        blockchain_change_callback:
            a callback that expects (blockchain, list_of_ops) that is invoked whenever the
            block chain is updated; blockchain is a BlockChain object and list_of_ops is a pair
            of tuples of the form (op, block_hash, block_index) where op is one of "add" or "remove",
            block_hash is a binary block hash, and block_index is an integer index number.
        """

        block_chain = BlockChain(
            did_lock_to_index_f=block_chain_store.did_lock_to_index)

        block_chain.preload_locked_blocks(block_chain_store.headers())

        block_chain.add_change_callback(block_chain_locker_callback)

        self.blockfetcher = Blockfetcher()
        self.inv_collector = InvCollector()

        self.block_store = TwoLevelDict()

        @asyncio.coroutine
        def _rotate(block_store):
            while True:
                block_store.rotate()
                yield from asyncio.sleep(1800)

        self.rotate_task = asyncio.Task(_rotate(self.block_store))

        self.blockhandler = BlockHandler(
            self.inv_collector,
            block_chain,
            self.block_store,
            should_download_f=should_download_block_f)

        block_chain.add_change_callback(blockchain_change_callback)

        self.fast_forward_add_peer = fast_forwarder_add_peer_f(block_chain)
        self.fetcher_task = asyncio.Task(
            new_block_fetcher(self.inv_collector, block_chain))

        self.nonce = int.from_bytes(os.urandom(8), byteorder="big")
        self.subversion = "/Notoshi/".encode("utf8")

        @asyncio.coroutine
        def run_peer(peer, fetcher, fast_forward_add_peer, blockfetcher,
                     inv_collector, blockhandler):
            yield from asyncio.wait_for(peer.connection_made_future,
                                        timeout=None)
            version_parameters = version_data_for_peer(
                peer,
                local_port=(server_port or 0),
                last_block_index=block_chain.length(),
                nonce=self.nonce,
                subversion=self.subversion)
            version_data = yield from initial_handshake(
                peer, version_parameters)
            last_block_index = version_data["last_block_index"]
            fast_forward_add_peer(peer, last_block_index)
            blockfetcher.add_peer(peer, fetcher, last_block_index)
            inv_collector.add_peer(peer)
            blockhandler.add_peer(peer)

        def create_protocol_callback():
            peer = BitcoinPeerProtocol(network["MAGIC_HEADER"])
            install_pingpong_manager(peer)
            fetcher = Fetcher(peer)
            peer.add_task(
                run_peer(peer, fetcher, self.fast_forward_add_peer,
                         self.blockfetcher, self.inv_collector,
                         self.blockhandler))
            return peer

        self.connection_info_q = manage_connection_count(
            host_port_q, create_protocol_callback, 8)
        self.show_task = asyncio.Task(
            show_connection_info(self.connection_info_q))

        # listener
        @asyncio.coroutine
        def run_listener():
            abstract_server = None
            future_peer = asyncio.Future()
            try:
                abstract_server = yield from asyncio.get_event_loop(
                ).create_server(protocol_factory=create_protocol_callback,
                                port=server_port)
                return abstract_server
            except OSError as ex:
                logging.info("can't listen on port %d", server_port)

        if server_port:
            self.server_task = asyncio.Task(run_listener())
Beispiel #8
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    def __init__(self, network, host_port_q, should_download_block_f, block_chain_store,
                 blockchain_change_callback, server_port=9999):
        """
        network:
            a value from pycoinnet.helpers.networks
        host_port_q:
            a Queue that is being fed potential places to connect
        should_download_block_f:
            a function that accepting(block_hash, block_index) and returning a boolean
            indicating whether that block should be downloaded. Only used during fast-forward.
        block_chain_store:
            usually a BlockChainStore instance
        blockchain_change_callback:
            a callback that expects (blockchain, list_of_ops) that is invoked whenever the
            block chain is updated; blockchain is a BlockChain object and list_of_ops is a pair
            of tuples of the form (op, block_hash, block_index) where op is one of "add" or "remove",
            block_hash is a binary block hash, and block_index is an integer index number.
        """

        block_chain = BlockChain(did_lock_to_index_f=block_chain_store.did_lock_to_index)

        block_chain.preload_locked_blocks(block_chain_store.headers())

        block_chain.add_change_callback(block_chain_locker_callback)

        self.blockfetcher = Blockfetcher()
        self.inv_collector = InvCollector()

        self.block_store = TwoLevelDict()

        @asyncio.coroutine
        def _rotate(block_store):
            while True:
                block_store.rotate()
                yield from asyncio.sleep(1800)
        self.rotate_task = asyncio.Task(_rotate(self.block_store))

        self.blockhandler = BlockHandler(self.inv_collector, block_chain, self.block_store,
                                         should_download_f=should_download_block_f)

        block_chain.add_change_callback(blockchain_change_callback)

        self.fast_forward_add_peer = fast_forwarder_add_peer_f(block_chain)
        self.fetcher_task = asyncio.Task(new_block_fetcher(self.inv_collector, block_chain))

        self.nonce = int.from_bytes(os.urandom(8), byteorder="big")
        self.subversion = "/Notoshi/".encode("utf8")

        @asyncio.coroutine
        def run_peer(peer, fetcher, fast_forward_add_peer, blockfetcher, inv_collector, blockhandler):
            yield from asyncio.wait_for(peer.connection_made_future, timeout=None)
            version_parameters = version_data_for_peer(
                peer, local_port=(server_port or 0), last_block_index=block_chain.length(),
                nonce=self.nonce, subversion=self.subversion)
            version_data = yield from initial_handshake(peer, version_parameters)
            last_block_index = version_data["last_block_index"]
            fast_forward_add_peer(peer, last_block_index)
            blockfetcher.add_peer(peer, fetcher, last_block_index)
            inv_collector.add_peer(peer)
            blockhandler.add_peer(peer)

        def create_protocol_callback():
            peer = BitcoinPeerProtocol(network["MAGIC_HEADER"])
            install_pingpong_manager(peer)
            fetcher = Fetcher(peer)
            peer.add_task(run_peer(
                peer, fetcher, self.fast_forward_add_peer,
                self.blockfetcher, self.inv_collector, self.blockhandler))
            return peer

        self.connection_info_q = manage_connection_count(host_port_q, create_protocol_callback, 8)
        self.show_task = asyncio.Task(show_connection_info(self.connection_info_q))

        # listener
        @asyncio.coroutine
        def run_listener():
            abstract_server = None
            try:
                abstract_server = yield from asyncio.get_event_loop().create_server(
                    protocol_factory=create_protocol_callback, port=server_port)
                return abstract_server
            except OSError:
                logging.info("can't listen on port %d", server_port)

        if server_port:
            self.server_task = asyncio.Task(run_listener())