diff options
Diffstat (limited to 'test/functional/test_framework/mininode.py')
| -rwxr-xr-x | test/functional/test_framework/mininode.py | 153 |
1 files changed, 151 insertions, 2 deletions
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py index 4d9661de37..99d0abc3f9 100755 --- a/test/functional/test_framework/mininode.py +++ b/test/functional/test_framework/mininode.py @@ -10,7 +10,9 @@ This python code was modified from ArtForz' public domain half-a-node, as found in the mini-node branch of http://github.com/jgarzik/pynode. P2PConnection: A low-level connection object to a node's P2P interface -P2PInterface: A high-level interface object for communicating to a node over P2P""" +P2PInterface: A high-level interface object for communicating to a node over P2P +P2PDataStore: A p2p interface class that keeps a store of transactions and blocks + and can respond correctly to getdata and getheaders messages""" import asyncore from collections import defaultdict from io import BytesIO @@ -86,7 +88,7 @@ class P2PConnection(asyncore.dispatcher): self.network = net self.disconnect = False - logger.info('Connecting to Bitcoin Node: %s:%d' % (self.dstaddr, self.dstport)) + logger.debug('Connecting to Bitcoin Node: %s:%d' % (self.dstaddr, self.dstport)) try: self.connect((dstaddr, dstport)) @@ -356,10 +358,22 @@ class P2PInterface(P2PConnection): wait_until(test_function, timeout=timeout, lock=mininode_lock) def wait_for_getdata(self, timeout=60): + """Waits for a getdata message. + + Receiving any getdata message will satisfy the predicate. the last_message["getdata"] + value must be explicitly cleared before calling this method, or this will return + immediately with success. TODO: change this method to take a hash value and only + return true if the correct block/tx has been requested.""" test_function = lambda: self.last_message.get("getdata") wait_until(test_function, timeout=timeout, lock=mininode_lock) def wait_for_getheaders(self, timeout=60): + """Waits for a getheaders message. + + Receiving any getheaders message will satisfy the predicate. the last_message["getheaders"] + value must be explicitly cleared before calling this method, or this will return + immediately with success. TODO: change this method to take a hash value and only + return true if the correct block header has been requested.""" test_function = lambda: self.last_message.get("getheaders") wait_until(test_function, timeout=timeout, lock=mininode_lock) @@ -440,3 +454,138 @@ def network_thread_join(timeout=10): for thread in network_threads: thread.join(timeout) assert not thread.is_alive() + +class P2PDataStore(P2PInterface): + """A P2P data store class. + + Keeps a block and transaction store and responds correctly to getdata and getheaders requests.""" + + def __init__(self): + super().__init__() + self.reject_code_received = None + self.reject_reason_received = None + # store of blocks. key is block hash, value is a CBlock object + self.block_store = {} + self.last_block_hash = '' + # store of txs. key is txid, value is a CTransaction object + self.tx_store = {} + self.getdata_requests = [] + + def on_getdata(self, message): + """Check for the tx/block in our stores and if found, reply with an inv message.""" + for inv in message.inv: + self.getdata_requests.append(inv.hash) + if (inv.type & MSG_TYPE_MASK) == MSG_TX and inv.hash in self.tx_store.keys(): + self.send_message(msg_tx(self.tx_store[inv.hash])) + elif (inv.type & MSG_TYPE_MASK) == MSG_BLOCK and inv.hash in self.block_store.keys(): + self.send_message(msg_block(self.block_store[inv.hash])) + else: + logger.debug('getdata message type {} received.'.format(hex(inv.type))) + + def on_getheaders(self, message): + """Search back through our block store for the locator, and reply with a headers message if found.""" + + locator, hash_stop = message.locator, message.hashstop + + # Assume that the most recent block added is the tip + if not self.block_store: + return + + headers_list = [self.block_store[self.last_block_hash]] + maxheaders = 2000 + while headers_list[-1].sha256 not in locator.vHave: + # Walk back through the block store, adding headers to headers_list + # as we go. + prev_block_hash = headers_list[-1].hashPrevBlock + if prev_block_hash in self.block_store: + prev_block_header = self.block_store[prev_block_hash] + headers_list.append(prev_block_header) + if prev_block_header.sha256 == hash_stop: + # if this is the hashstop header, stop here + break + else: + logger.debug('block hash {} not found in block store'.format(hex(prev_block_hash))) + break + + # Truncate the list if there are too many headers + headers_list = headers_list[:-maxheaders - 1:-1] + response = msg_headers(headers_list) + + if response is not None: + self.send_message(response) + + def on_reject(self, message): + """Store reject reason and code for testing.""" + self.reject_code_received = message.code + self.reject_reason_received = message.reason + + def send_blocks_and_test(self, blocks, rpc, success=True, request_block=True, reject_code=None, reject_reason=None, timeout=60): + """Send blocks to test node and test whether the tip advances. + + - add all blocks to our block_store + - send a headers message for the final block + - the on_getheaders handler will ensure that any getheaders are responded to + - if request_block is True: wait for getdata for each of the blocks. The on_getdata handler will + ensure that any getdata messages are responded to + - if success is True: assert that the node's tip advances to the most recent block + - if success is False: assert that the node's tip doesn't advance + - if reject_code and reject_reason are set: assert that the correct reject message is received""" + + with mininode_lock: + self.reject_code_received = None + self.reject_reason_received = None + + for block in blocks: + self.block_store[block.sha256] = block + self.last_block_hash = block.sha256 + + self.send_message(msg_headers([blocks[-1]])) + + if request_block: + wait_until(lambda: blocks[-1].sha256 in self.getdata_requests, timeout=timeout, lock=mininode_lock) + + if success: + wait_until(lambda: rpc.getbestblockhash() == blocks[-1].hash, timeout=timeout) + else: + assert rpc.getbestblockhash() != blocks[-1].hash + + if reject_code is not None: + wait_until(lambda: self.reject_code_received == reject_code, lock=mininode_lock) + if reject_reason is not None: + wait_until(lambda: self.reject_reason_received == reject_reason, lock=mininode_lock) + + def send_txs_and_test(self, txs, rpc, success=True, reject_code=None, reject_reason=None): + """Send txs to test node and test whether they're accepted to the mempool. + + - add all txs to our tx_store + - send tx messages for all txs + - if success is True: assert that the tx is accepted to the mempool + - if success is False: assert that the tx is not accepted to the mempool + - if reject_code and reject_reason are set: assert that the correct reject message is received.""" + + with mininode_lock: + self.reject_code_received = None + self.reject_reason_received = None + + for tx in txs: + self.tx_store[tx.sha256] = tx + + for tx in txs: + self.send_message(msg_tx(tx)) + + self.sync_with_ping() + + raw_mempool = rpc.getrawmempool() + if success: + # Check that all txs are now in the mempool + for tx in txs: + assert tx.hash in raw_mempool, "{} not found in mempool".format(tx.hash) + else: + # Check that none of the txs are now in the mempool + for tx in txs: + assert tx.hash not in raw_mempool, "{} tx found in mempool".format(tx.hash) + + if reject_code is not None: + wait_until(lambda: self.reject_code_received == reject_code, lock=mininode_lock) + if reject_reason is not None: + wait_until(lambda: self.reject_reason_received == reject_reason, lock=mininode_lock) |