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d6a5dc4a2e
waitfornewblock waits until a new block is received, or the timeout expires, then returns the current block height/hash. waitforblock waits for a specific blockhash, or until the timeout expires, then returns the current block height/hash. If the target blockhash is the current tip, it will return immediately. waitforblockheight waits until the tip has reached a certain height or higher, then returns the current height and hash. waitforblockheight is used to avoid polling in the rpc tests.
654 lines
23 KiB
Python
654 lines
23 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2014-2016 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#
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# Helpful routines for regression testing
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#
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import os
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import sys
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from binascii import hexlify, unhexlify
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from base64 import b64encode
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from decimal import Decimal, ROUND_DOWN
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import json
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import http.client
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import random
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import shutil
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import subprocess
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import time
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import re
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import errno
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from . import coverage
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from .authproxy import AuthServiceProxy, JSONRPCException
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COVERAGE_DIR = None
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# The maximum number of nodes a single test can spawn
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MAX_NODES = 8
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# Don't assign rpc or p2p ports lower than this
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PORT_MIN = 11000
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# The number of ports to "reserve" for p2p and rpc, each
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PORT_RANGE = 5000
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BITCOIND_PROC_WAIT_TIMEOUT = 60
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class PortSeed:
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# Must be initialized with a unique integer for each process
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n = None
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#Set Mocktime default to OFF.
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#MOCKTIME is only needed for scripts that use the
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#cached version of the blockchain. If the cached
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#version of the blockchain is used without MOCKTIME
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#then the mempools will not sync due to IBD.
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MOCKTIME = 0
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def enable_mocktime():
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#For backwared compatibility of the python scripts
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#with previous versions of the cache, set MOCKTIME
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#to Jan 1, 2014 + (201 * 10 * 60)
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global MOCKTIME
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MOCKTIME = 1388534400 + (201 * 10 * 60)
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def disable_mocktime():
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global MOCKTIME
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MOCKTIME = 0
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def get_mocktime():
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return MOCKTIME
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def enable_coverage(dirname):
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"""Maintain a log of which RPC calls are made during testing."""
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global COVERAGE_DIR
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COVERAGE_DIR = dirname
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def get_rpc_proxy(url, node_number, timeout=None):
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"""
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Args:
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url (str): URL of the RPC server to call
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node_number (int): the node number (or id) that this calls to
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Kwargs:
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timeout (int): HTTP timeout in seconds
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Returns:
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AuthServiceProxy. convenience object for making RPC calls.
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"""
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proxy_kwargs = {}
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if timeout is not None:
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proxy_kwargs['timeout'] = timeout
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proxy = AuthServiceProxy(url, **proxy_kwargs)
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proxy.url = url # store URL on proxy for info
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coverage_logfile = coverage.get_filename(
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COVERAGE_DIR, node_number) if COVERAGE_DIR else None
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return coverage.AuthServiceProxyWrapper(proxy, coverage_logfile)
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def p2p_port(n):
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assert(n <= MAX_NODES)
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return PORT_MIN + n + (MAX_NODES * PortSeed.n) % (PORT_RANGE - 1 - MAX_NODES)
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def rpc_port(n):
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return PORT_MIN + PORT_RANGE + n + (MAX_NODES * PortSeed.n) % (PORT_RANGE - 1 - MAX_NODES)
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def check_json_precision():
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"""Make sure json library being used does not lose precision converting BTC values"""
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n = Decimal("20000000.00000003")
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satoshis = int(json.loads(json.dumps(float(n)))*1.0e8)
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if satoshis != 2000000000000003:
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raise RuntimeError("JSON encode/decode loses precision")
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def count_bytes(hex_string):
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return len(bytearray.fromhex(hex_string))
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def bytes_to_hex_str(byte_str):
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return hexlify(byte_str).decode('ascii')
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def hex_str_to_bytes(hex_str):
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return unhexlify(hex_str.encode('ascii'))
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def str_to_b64str(string):
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return b64encode(string.encode('utf-8')).decode('ascii')
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def sync_blocks(rpc_connections, wait=1, timeout=60):
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"""
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Wait until everybody has the same tip
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"""
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maxheight = 0
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while timeout > 0:
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tips = [ x.waitforblockheight(maxheight, int(wait * 1000)) for x in rpc_connections ]
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heights = [ x["height"] for x in tips ]
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if tips == [ tips[0] ]*len(tips):
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return True
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if heights == [ heights[0] ]*len(heights): #heights are the same but hashes are not
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raise AssertionError("Block sync failed")
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timeout -= wait
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maxheight = max(heights)
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raise AssertionError("Block sync failed")
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def sync_mempools(rpc_connections, wait=1, timeout=60):
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"""
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Wait until everybody has the same transactions in their memory
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pools
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"""
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while timeout > 0:
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pool = set(rpc_connections[0].getrawmempool())
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num_match = 1
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for i in range(1, len(rpc_connections)):
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if set(rpc_connections[i].getrawmempool()) == pool:
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num_match = num_match+1
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if num_match == len(rpc_connections):
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return True
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time.sleep(wait)
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timeout -= wait
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raise AssertionError("Mempool sync failed")
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bitcoind_processes = {}
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def initialize_datadir(dirname, n):
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datadir = os.path.join(dirname, "node"+str(n))
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if not os.path.isdir(datadir):
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os.makedirs(datadir)
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rpc_u, rpc_p = rpc_auth_pair(n)
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with open(os.path.join(datadir, "bitcoin.conf"), 'w') as f:
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f.write("regtest=1\n")
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f.write("rpcuser=" + rpc_u + "\n")
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f.write("rpcpassword=" + rpc_p + "\n")
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f.write("port="+str(p2p_port(n))+"\n")
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f.write("rpcport="+str(rpc_port(n))+"\n")
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f.write("listenonion=0\n")
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return datadir
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def rpc_auth_pair(n):
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return 'rpcuser💻' + str(n), 'rpcpass🔑' + str(n)
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def rpc_url(i, rpchost=None):
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rpc_u, rpc_p = rpc_auth_pair(i)
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host = '127.0.0.1'
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port = rpc_port(i)
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if rpchost:
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parts = rpchost.split(':')
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if len(parts) == 2:
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host, port = parts
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else:
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host = rpchost
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return "http://%s:%s@%s:%d" % (rpc_u, rpc_p, host, int(port))
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def wait_for_bitcoind_start(process, url, i):
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'''
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Wait for bitcoind to start. This means that RPC is accessible and fully initialized.
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Raise an exception if bitcoind exits during initialization.
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'''
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while True:
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if process.poll() is not None:
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raise Exception('bitcoind exited with status %i during initialization' % process.returncode)
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try:
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rpc = get_rpc_proxy(url, i)
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blocks = rpc.getblockcount()
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break # break out of loop on success
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except IOError as e:
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if e.errno != errno.ECONNREFUSED: # Port not yet open?
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raise # unknown IO error
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except JSONRPCException as e: # Initialization phase
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if e.error['code'] != -28: # RPC in warmup?
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raise # unkown JSON RPC exception
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time.sleep(0.25)
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def initialize_chain(test_dir, num_nodes, cachedir):
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"""
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Create a cache of a 200-block-long chain (with wallet) for MAX_NODES
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Afterward, create num_nodes copies from the cache
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"""
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assert num_nodes <= MAX_NODES
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create_cache = False
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for i in range(MAX_NODES):
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if not os.path.isdir(os.path.join(cachedir, 'node'+str(i))):
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create_cache = True
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break
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if create_cache:
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#find and delete old cache directories if any exist
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for i in range(MAX_NODES):
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if os.path.isdir(os.path.join(cachedir,"node"+str(i))):
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shutil.rmtree(os.path.join(cachedir,"node"+str(i)))
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# Create cache directories, run bitcoinds:
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for i in range(MAX_NODES):
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datadir=initialize_datadir(cachedir, i)
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args = [ os.getenv("BITCOIND", "bitcoind"), "-server", "-keypool=1", "-datadir="+datadir, "-discover=0" ]
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if i > 0:
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args.append("-connect=127.0.0.1:"+str(p2p_port(0)))
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bitcoind_processes[i] = subprocess.Popen(args)
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if os.getenv("PYTHON_DEBUG", ""):
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print("initialize_chain: bitcoind started, waiting for RPC to come up")
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wait_for_bitcoind_start(bitcoind_processes[i], rpc_url(i), i)
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if os.getenv("PYTHON_DEBUG", ""):
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print("initialize_chain: RPC succesfully started")
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rpcs = []
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for i in range(MAX_NODES):
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try:
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rpcs.append(get_rpc_proxy(rpc_url(i), i))
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except:
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sys.stderr.write("Error connecting to "+url+"\n")
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sys.exit(1)
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# Create a 200-block-long chain; each of the 4 first nodes
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# gets 25 mature blocks and 25 immature.
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# Note: To preserve compatibility with older versions of
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# initialize_chain, only 4 nodes will generate coins.
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#
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# blocks are created with timestamps 10 minutes apart
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# starting from 2010 minutes in the past
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enable_mocktime()
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block_time = get_mocktime() - (201 * 10 * 60)
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for i in range(2):
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for peer in range(4):
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for j in range(25):
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set_node_times(rpcs, block_time)
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rpcs[peer].generate(1)
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block_time += 10*60
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# Must sync before next peer starts generating blocks
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sync_blocks(rpcs)
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# Shut them down, and clean up cache directories:
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stop_nodes(rpcs)
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wait_bitcoinds()
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disable_mocktime()
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for i in range(MAX_NODES):
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os.remove(log_filename(cachedir, i, "debug.log"))
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os.remove(log_filename(cachedir, i, "db.log"))
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os.remove(log_filename(cachedir, i, "peers.dat"))
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os.remove(log_filename(cachedir, i, "fee_estimates.dat"))
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for i in range(num_nodes):
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from_dir = os.path.join(cachedir, "node"+str(i))
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to_dir = os.path.join(test_dir, "node"+str(i))
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shutil.copytree(from_dir, to_dir)
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initialize_datadir(test_dir, i) # Overwrite port/rpcport in bitcoin.conf
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def initialize_chain_clean(test_dir, num_nodes):
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"""
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Create an empty blockchain and num_nodes wallets.
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Useful if a test case wants complete control over initialization.
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"""
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for i in range(num_nodes):
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datadir=initialize_datadir(test_dir, i)
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def _rpchost_to_args(rpchost):
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'''Convert optional IP:port spec to rpcconnect/rpcport args'''
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if rpchost is None:
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return []
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match = re.match('(\[[0-9a-fA-f:]+\]|[^:]+)(?::([0-9]+))?$', rpchost)
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if not match:
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raise ValueError('Invalid RPC host spec ' + rpchost)
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rpcconnect = match.group(1)
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rpcport = match.group(2)
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if rpcconnect.startswith('['): # remove IPv6 [...] wrapping
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rpcconnect = rpcconnect[1:-1]
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rv = ['-rpcconnect=' + rpcconnect]
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if rpcport:
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rv += ['-rpcport=' + rpcport]
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return rv
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def start_node(i, dirname, extra_args=None, rpchost=None, timewait=None, binary=None):
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"""
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Start a bitcoind and return RPC connection to it
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"""
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datadir = os.path.join(dirname, "node"+str(i))
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if binary is None:
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binary = os.getenv("BITCOIND", "bitcoind")
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args = [ binary, "-datadir="+datadir, "-server", "-keypool=1", "-discover=0", "-rest", "-mocktime="+str(get_mocktime()) ]
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if extra_args is not None: args.extend(extra_args)
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bitcoind_processes[i] = subprocess.Popen(args)
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if os.getenv("PYTHON_DEBUG", ""):
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print("start_node: bitcoind started, waiting for RPC to come up")
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url = rpc_url(i, rpchost)
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wait_for_bitcoind_start(bitcoind_processes[i], url, i)
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if os.getenv("PYTHON_DEBUG", ""):
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print("start_node: RPC succesfully started")
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proxy = get_rpc_proxy(url, i, timeout=timewait)
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if COVERAGE_DIR:
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coverage.write_all_rpc_commands(COVERAGE_DIR, proxy)
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return proxy
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def start_nodes(num_nodes, dirname, extra_args=None, rpchost=None, binary=None):
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"""
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Start multiple bitcoinds, return RPC connections to them
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"""
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if extra_args is None: extra_args = [ None for _ in range(num_nodes) ]
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if binary is None: binary = [ None for _ in range(num_nodes) ]
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rpcs = []
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try:
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for i in range(num_nodes):
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rpcs.append(start_node(i, dirname, extra_args[i], rpchost, binary=binary[i]))
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except: # If one node failed to start, stop the others
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stop_nodes(rpcs)
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raise
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return rpcs
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def log_filename(dirname, n_node, logname):
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return os.path.join(dirname, "node"+str(n_node), "regtest", logname)
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def stop_node(node, i):
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try:
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node.stop()
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except http.client.CannotSendRequest as e:
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print("WARN: Unable to stop node: " + repr(e))
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bitcoind_processes[i].wait(timeout=BITCOIND_PROC_WAIT_TIMEOUT)
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del bitcoind_processes[i]
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def stop_nodes(nodes):
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for node in nodes:
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try:
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node.stop()
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except http.client.CannotSendRequest as e:
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print("WARN: Unable to stop node: " + repr(e))
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del nodes[:] # Emptying array closes connections as a side effect
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def set_node_times(nodes, t):
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for node in nodes:
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node.setmocktime(t)
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def wait_bitcoinds():
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# Wait for all bitcoinds to cleanly exit
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for bitcoind in bitcoind_processes.values():
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bitcoind.wait(timeout=BITCOIND_PROC_WAIT_TIMEOUT)
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bitcoind_processes.clear()
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def connect_nodes(from_connection, node_num):
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ip_port = "127.0.0.1:"+str(p2p_port(node_num))
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from_connection.addnode(ip_port, "onetry")
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# poll until version handshake complete to avoid race conditions
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# with transaction relaying
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while any(peer['version'] == 0 for peer in from_connection.getpeerinfo()):
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time.sleep(0.1)
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def connect_nodes_bi(nodes, a, b):
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connect_nodes(nodes[a], b)
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connect_nodes(nodes[b], a)
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def find_output(node, txid, amount):
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"""
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Return index to output of txid with value amount
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Raises exception if there is none.
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"""
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txdata = node.getrawtransaction(txid, 1)
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for i in range(len(txdata["vout"])):
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if txdata["vout"][i]["value"] == amount:
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return i
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raise RuntimeError("find_output txid %s : %s not found"%(txid,str(amount)))
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def gather_inputs(from_node, amount_needed, confirmations_required=1):
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"""
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Return a random set of unspent txouts that are enough to pay amount_needed
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"""
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assert(confirmations_required >=0)
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utxo = from_node.listunspent(confirmations_required)
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random.shuffle(utxo)
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inputs = []
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total_in = Decimal("0.00000000")
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while total_in < amount_needed and len(utxo) > 0:
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t = utxo.pop()
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total_in += t["amount"]
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inputs.append({ "txid" : t["txid"], "vout" : t["vout"], "address" : t["address"] } )
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if total_in < amount_needed:
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raise RuntimeError("Insufficient funds: need %d, have %d"%(amount_needed, total_in))
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return (total_in, inputs)
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def make_change(from_node, amount_in, amount_out, fee):
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"""
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Create change output(s), return them
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"""
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outputs = {}
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amount = amount_out+fee
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change = amount_in - amount
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if change > amount*2:
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# Create an extra change output to break up big inputs
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change_address = from_node.getnewaddress()
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# Split change in two, being careful of rounding:
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outputs[change_address] = Decimal(change/2).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
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change = amount_in - amount - outputs[change_address]
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if change > 0:
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outputs[from_node.getnewaddress()] = change
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return outputs
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def send_zeropri_transaction(from_node, to_node, amount, fee):
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"""
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Create&broadcast a zero-priority transaction.
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Returns (txid, hex-encoded-txdata)
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Ensures transaction is zero-priority by first creating a send-to-self,
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then using its output
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"""
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# Create a send-to-self with confirmed inputs:
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self_address = from_node.getnewaddress()
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(total_in, inputs) = gather_inputs(from_node, amount+fee*2)
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outputs = make_change(from_node, total_in, amount+fee, fee)
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outputs[self_address] = float(amount+fee)
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self_rawtx = from_node.createrawtransaction(inputs, outputs)
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self_signresult = from_node.signrawtransaction(self_rawtx)
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self_txid = from_node.sendrawtransaction(self_signresult["hex"], True)
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vout = find_output(from_node, self_txid, amount+fee)
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# Now immediately spend the output to create a 1-input, 1-output
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# zero-priority transaction:
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inputs = [ { "txid" : self_txid, "vout" : vout } ]
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outputs = { to_node.getnewaddress() : float(amount) }
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rawtx = from_node.createrawtransaction(inputs, outputs)
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signresult = from_node.signrawtransaction(rawtx)
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txid = from_node.sendrawtransaction(signresult["hex"], True)
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return (txid, signresult["hex"])
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def random_zeropri_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
|
|
"""
|
|
Create a random zero-priority transaction.
|
|
Returns (txid, hex-encoded-transaction-data, fee)
|
|
"""
|
|
from_node = random.choice(nodes)
|
|
to_node = random.choice(nodes)
|
|
fee = min_fee + fee_increment*random.randint(0,fee_variants)
|
|
(txid, txhex) = send_zeropri_transaction(from_node, to_node, amount, fee)
|
|
return (txid, txhex, fee)
|
|
|
|
def random_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
|
|
"""
|
|
Create a random transaction.
|
|
Returns (txid, hex-encoded-transaction-data, fee)
|
|
"""
|
|
from_node = random.choice(nodes)
|
|
to_node = random.choice(nodes)
|
|
fee = min_fee + fee_increment*random.randint(0,fee_variants)
|
|
|
|
(total_in, inputs) = gather_inputs(from_node, amount+fee)
|
|
outputs = make_change(from_node, total_in, amount, fee)
|
|
outputs[to_node.getnewaddress()] = float(amount)
|
|
|
|
rawtx = from_node.createrawtransaction(inputs, outputs)
|
|
signresult = from_node.signrawtransaction(rawtx)
|
|
txid = from_node.sendrawtransaction(signresult["hex"], True)
|
|
|
|
return (txid, signresult["hex"], fee)
|
|
|
|
def assert_fee_amount(fee, tx_size, fee_per_kB):
|
|
"""Assert the fee was in range"""
|
|
target_fee = tx_size * fee_per_kB / 1000
|
|
if fee < target_fee:
|
|
raise AssertionError("Fee of %s BTC too low! (Should be %s BTC)"%(str(fee), str(target_fee)))
|
|
# allow the wallet's estimation to be at most 2 bytes off
|
|
if fee > (tx_size + 2) * fee_per_kB / 1000:
|
|
raise AssertionError("Fee of %s BTC too high! (Should be %s BTC)"%(str(fee), str(target_fee)))
|
|
|
|
def assert_equal(thing1, thing2):
|
|
if thing1 != thing2:
|
|
raise AssertionError("%s != %s"%(str(thing1),str(thing2)))
|
|
|
|
def assert_greater_than(thing1, thing2):
|
|
if thing1 <= thing2:
|
|
raise AssertionError("%s <= %s"%(str(thing1),str(thing2)))
|
|
|
|
def assert_raises(exc, fun, *args, **kwds):
|
|
try:
|
|
fun(*args, **kwds)
|
|
except exc:
|
|
pass
|
|
except Exception as e:
|
|
raise AssertionError("Unexpected exception raised: "+type(e).__name__)
|
|
else:
|
|
raise AssertionError("No exception raised")
|
|
|
|
def assert_is_hex_string(string):
|
|
try:
|
|
int(string, 16)
|
|
except Exception as e:
|
|
raise AssertionError(
|
|
"Couldn't interpret %r as hexadecimal; raised: %s" % (string, e))
|
|
|
|
def assert_is_hash_string(string, length=64):
|
|
if not isinstance(string, str):
|
|
raise AssertionError("Expected a string, got type %r" % type(string))
|
|
elif length and len(string) != length:
|
|
raise AssertionError(
|
|
"String of length %d expected; got %d" % (length, len(string)))
|
|
elif not re.match('[abcdef0-9]+$', string):
|
|
raise AssertionError(
|
|
"String %r contains invalid characters for a hash." % string)
|
|
|
|
def assert_array_result(object_array, to_match, expected, should_not_find = False):
|
|
"""
|
|
Pass in array of JSON objects, a dictionary with key/value pairs
|
|
to match against, and another dictionary with expected key/value
|
|
pairs.
|
|
If the should_not_find flag is true, to_match should not be found
|
|
in object_array
|
|
"""
|
|
if should_not_find == True:
|
|
assert_equal(expected, { })
|
|
num_matched = 0
|
|
for item in object_array:
|
|
all_match = True
|
|
for key,value in to_match.items():
|
|
if item[key] != value:
|
|
all_match = False
|
|
if not all_match:
|
|
continue
|
|
elif should_not_find == True:
|
|
num_matched = num_matched+1
|
|
for key,value in expected.items():
|
|
if item[key] != value:
|
|
raise AssertionError("%s : expected %s=%s"%(str(item), str(key), str(value)))
|
|
num_matched = num_matched+1
|
|
if num_matched == 0 and should_not_find != True:
|
|
raise AssertionError("No objects matched %s"%(str(to_match)))
|
|
if num_matched > 0 and should_not_find == True:
|
|
raise AssertionError("Objects were found %s"%(str(to_match)))
|
|
|
|
def satoshi_round(amount):
|
|
return Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
|
|
|
|
# Helper to create at least "count" utxos
|
|
# Pass in a fee that is sufficient for relay and mining new transactions.
|
|
def create_confirmed_utxos(fee, node, count):
|
|
node.generate(int(0.5*count)+101)
|
|
utxos = node.listunspent()
|
|
iterations = count - len(utxos)
|
|
addr1 = node.getnewaddress()
|
|
addr2 = node.getnewaddress()
|
|
if iterations <= 0:
|
|
return utxos
|
|
for i in range(iterations):
|
|
t = utxos.pop()
|
|
inputs = []
|
|
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
|
|
outputs = {}
|
|
send_value = t['amount'] - fee
|
|
outputs[addr1] = satoshi_round(send_value/2)
|
|
outputs[addr2] = satoshi_round(send_value/2)
|
|
raw_tx = node.createrawtransaction(inputs, outputs)
|
|
signed_tx = node.signrawtransaction(raw_tx)["hex"]
|
|
txid = node.sendrawtransaction(signed_tx)
|
|
|
|
while (node.getmempoolinfo()['size'] > 0):
|
|
node.generate(1)
|
|
|
|
utxos = node.listunspent()
|
|
assert(len(utxos) >= count)
|
|
return utxos
|
|
|
|
# Create large OP_RETURN txouts that can be appended to a transaction
|
|
# to make it large (helper for constructing large transactions).
|
|
def gen_return_txouts():
|
|
# Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
|
|
# So we have big transactions (and therefore can't fit very many into each block)
|
|
# create one script_pubkey
|
|
script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
|
|
for i in range (512):
|
|
script_pubkey = script_pubkey + "01"
|
|
# concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
|
|
txouts = "81"
|
|
for k in range(128):
|
|
# add txout value
|
|
txouts = txouts + "0000000000000000"
|
|
# add length of script_pubkey
|
|
txouts = txouts + "fd0402"
|
|
# add script_pubkey
|
|
txouts = txouts + script_pubkey
|
|
return txouts
|
|
|
|
def create_tx(node, coinbase, to_address, amount):
|
|
inputs = [{ "txid" : coinbase, "vout" : 0}]
|
|
outputs = { to_address : amount }
|
|
rawtx = node.createrawtransaction(inputs, outputs)
|
|
signresult = node.signrawtransaction(rawtx)
|
|
assert_equal(signresult["complete"], True)
|
|
return signresult["hex"]
|
|
|
|
# Create a spend of each passed-in utxo, splicing in "txouts" to each raw
|
|
# transaction to make it large. See gen_return_txouts() above.
|
|
def create_lots_of_big_transactions(node, txouts, utxos, fee):
|
|
addr = node.getnewaddress()
|
|
txids = []
|
|
for i in range(len(utxos)):
|
|
t = utxos.pop()
|
|
inputs = []
|
|
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
|
|
outputs = {}
|
|
send_value = t['amount'] - fee
|
|
outputs[addr] = satoshi_round(send_value)
|
|
rawtx = node.createrawtransaction(inputs, outputs)
|
|
newtx = rawtx[0:92]
|
|
newtx = newtx + txouts
|
|
newtx = newtx + rawtx[94:]
|
|
signresult = node.signrawtransaction(newtx, None, None, "NONE")
|
|
txid = node.sendrawtransaction(signresult["hex"], True)
|
|
txids.append(txid)
|
|
return txids
|
|
|
|
def get_bip9_status(node, key):
|
|
info = node.getblockchaininfo()
|
|
return info['bip9_softforks'][key]
|