(node_factory, bitcoind, chainparams, opts)
| 334 | |
| 335 | |
| 336 | def closing_negotiation_step(node_factory, bitcoind, chainparams, opts): |
| 337 | def feerate_for(target, minimum=0, maximum=10000000): |
| 338 | """Binary search to find feerate""" |
| 339 | assert minimum != maximum |
| 340 | mid = (minimum + maximum) // 2 |
| 341 | mid_fee = closing_fee(mid, 1) |
| 342 | if mid_fee > target: |
| 343 | return feerate_for(target, minimum, mid) |
| 344 | elif mid_fee < target: |
| 345 | return feerate_for(target, mid, maximum) |
| 346 | else: |
| 347 | return mid |
| 348 | |
| 349 | orate = feerate_for(21000) # closing fee negotiation starts at 21000 |
| 350 | prate = feerate_for(20000) # closing fee negotiation starts at 20000 |
| 351 | opener, peer = node_factory.line_graph(2, opts=[{'feerates': (orate, orate, orate, orate)}, |
| 352 | {'feerates': (prate, prate, prate, prate)}]) |
| 353 | |
| 354 | opener_id = opener.info['id'] |
| 355 | peer_id = peer.info['id'] |
| 356 | |
| 357 | assert bitcoind.rpc.getmempoolinfo()['size'] == 0 |
| 358 | |
| 359 | if opts['close_initiated_by'] == 'opener': |
| 360 | opener.rpc.close(peer_id=peer_id, fee_negotiation_step=opts['fee_negotiation_step']) |
| 361 | else: |
| 362 | assert opts['close_initiated_by'] == 'peer' |
| 363 | peer.rpc.close(peer_id=opener_id, fee_negotiation_step=opts['fee_negotiation_step']) |
| 364 | |
| 365 | # Get the proclaimed closing fee from the two nodes' statuses |
| 366 | |
| 367 | status_agreed_regex = re.compile("agreed on a closing fee of ([0-9]+) satoshi") |
| 368 | |
| 369 | # [fee_from_opener_status, fee_from_peer_status] |
| 370 | fees_from_status = [None, None] |
| 371 | |
| 372 | def get_fee_from_status(node, peer_id, i): |
| 373 | nonlocal fees_from_status |
| 374 | peer = only_one(node.rpc.listpeers(peer_id)['peers']) |
| 375 | channel = only_one(peer['channels']) |
| 376 | status = channel['status'][0] |
| 377 | |
| 378 | m = status_agreed_regex.search(status) |
| 379 | if not m: |
| 380 | return False |
| 381 | |
| 382 | fees_from_status[i] = int(m.group(1)) |
| 383 | return True |
| 384 | |
| 385 | wait_for(lambda: get_fee_from_status(opener, peer_id, 0)) |
| 386 | wait_for(lambda: get_fee_from_status(peer, opener_id, 1)) |
| 387 | |
| 388 | assert opts['expected_close_fee'] == fees_from_status[0] |
| 389 | assert opts['expected_close_fee'] == fees_from_status[1] |
| 390 | |
| 391 | # Get the closing transaction from the bitcoind mempool and get its fee |
| 392 | |
| 393 | mempool = None |
no test coverage detected