Age | Commit message (Collapse) | Author |
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Almost all test scripts currently need to override the __init__()
method. When they do that they need to call into super().__init__() as
the base class does some generic initialization.
This commit makes the base class __init__() call into set_test_params()
method. Individual test cases can override set_test_params() to setup
their test parameters.
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Separates the act of creating a TestNode object from starting the node.
The test_framework now keeps track of its list of TestNodes, and test
writers can call start_node() and stop_node() without having to update
the self.nodes list.
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08ce33f8e qa: Move wait_until to util (MarcoFalke)
Pull request description:
This moves `wait_until` to `util.py` to make it generally available to python tests.
Also, `wait_until` now takes an optional lock that is acquired while testing the predicate.
Previously the lock was always acquired, even when it was not necessary, cf. `disconnect_ban.py`.
Tree-SHA512: 18e452a017a6566fa8ad09bde058e1b841e167039dc63299e70cfa7a6dcbc779581e60ca3e8eb2f1b610767d5208b9376c203eb11015b250fd0542b5eb4215a8
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Fixes a couple of bugs from the introduction of TestNode:
- test scripts were no longer able to specify a custom timeout for
starting a node. Therefore tests with nodes that take a long time to
start up (eg pruning.py) would fail.
- the test for whether a node has failed on start up was broken
by changing 'assert x is None' to 'assert not x'. Since
subprocess.poll() can return None (indicating the node is still running)
or 0 (indicating the node exited with return code 0), this was a
regression.
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When running the tests locally with a parallelism of 4 on an otherwise
busy system, RPC can take quite a wait to come up.
Change the timeout to 60 seconds just to be safe.
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e53615b Remove vchDefaultKey and have better first run detection (Andrew Chow)
Pull request description:
Removes vchDefaultKey which was only used for first run detection. Improves wallet first run detection by checking to see if any keys were read from the database.
This also fixes a (rather contrived) case where an encrypted non-HD wallet has corruption such that the default key is no longer valid and is loaded into a Core version that supports HD wallets. This causes a runtime exception since a new hd master key is generated as the software believes the wallet file is newly created but cannot add the generated key to the wallet since it is encrypted. I was only able to replicate this error by creating a non-hd wallet, encrypting it, then editing the wallet using `db_dump` and `db_load` before loading the wallet with hd enabled. This problem has been reported by [two](https://bitcointalk.org/index.php?topic=1993244.0) [users](https://bitcointalk.org/index.php?topic=1746976.msg17511261#msg17511261) so it is something that can happen, although that raises the question of "what corrupted the default key".
~P.S. I don't know what's up with the whitespace changes. I think my text editor is doing something stupid but I don't think those are important enough to attempt undoing them.~ Undid those
Tree-SHA512: 63b485f356566e8ffa033ad9b7101f7f6b56372b29ec2a43b947b0eeb1ada4c2cfe24740515d013aedd5f51aa1890dfbe499d2c5c062fc1b5d272324728a7d55
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1d8df0141 Fix MD formatting in REST-interface.md and spelling mistake in test_runner.py (MeshCollider)
41f3e84aa Fix inconsistencies and grammar in various files (MeshCollider)
Pull request description:
Just a simple fix of some inconsistent capitalization, formatting and grammar in a few files (no code changes)
Tree-SHA512: 60b12a5a5c69a1af4a25b7db0b32ed806ed62ad2966cee08b3792a7cfa7f51848fd485349b4c09e60a7eedfdf55ee730c51daa066d6e226ae404c93342bf3e13
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9d5e98ff8 Fix typos. (practicalswift)
Pull request description:
Fix some typos not covered by #10705.
Tree-SHA512: f06e9541f6ae13ef5d6731399b61795997b21a8816abeb1749c93e99a5c47354e6cbd4a3d145f4dc6ef8a13db179799a3121ecbb7288abf3e8d81cdf81500d37
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f42fc1d50 doc: spelling fixes (klemens)
Pull request description:
patch contains some spelling fixes ( just in comments ) as found by a bot ( http://www.misfix.org, https://github.com/ka7/misspell_fixer ).
Tree-SHA512: ba6046cfcd81b0783420daae7d776be92dd7b85a593e212f8f1b4403aca9b1b6af12cef7080d4ea5ed4a14952fd25e4300109a59c414e08f5395cdb9947bb750
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Removes vchDefaultKey which was only used for first run detection.
Improves wallet first run detection by checking to see if any keys
were read from the database.
This will now also check for a valid defaultkey for backwards
compatibility reasons and to check for any corruption.
Keys will stil be generated on the first one, but there won't be
any shown in the address book as was previously done.
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789733891 [tests] Introduce TestNode (John Newbery)
Pull request description:
Continues #10082
TestNode is a class responsible for all state related to a bitcoind node
under test. It stores local state, is responsible for tracking the
bitcoind process and delegates unrecognised messages to the RPC
connection.
This commit changes start_nodes and stop_nodes to start and stop the
bitcoind nodes in parallel, making test setup and teardown much faster.
On my vm, this changeset reduces total test_runner runtime for the base set of tests
(including building the cache) from 263s to 195s (a 25% speedup). Note that the time
reported by test_runner does not include time spent building the cache:
*with TestNode*:
```
→ date +"%T" ; ./test_runner.py -q ; date +"%T"
12:48:04
..................................................................................................................................................................................................................................................................................................................................
TEST | STATUS | DURATION
abandonconflict.py | ✓ Passed | 12 s
bip68-112-113-p2p.py | ✓ Passed | 19 s
blockchain.py | ✓ Passed | 8 s
bumpfee.py | ✓ Passed | 13 s
decodescript.py | ✓ Passed | 3 s
disablewallet.py | ✓ Passed | 3 s
disconnect_ban.py | ✓ Passed | 6 s
fundrawtransaction.py | ✓ Passed | 37 s
getchaintips.py | ✓ Passed | 4 s
httpbasics.py | ✓ Passed | 3 s
import-rescan.py | ✓ Passed | 4 s
importmulti.py | ✓ Passed | 6 s
importprunedfunds.py | ✓ Passed | 3 s
invalidblockrequest.py | ✓ Passed | 4 s
invalidtxrequest.py | ✓ Passed | 4 s
keypool.py | ✓ Passed | 7 s
listsinceblock.py | ✓ Passed | 4 s
listtransactions.py | ✓ Passed | 33 s
mempool_limit.py | ✓ Passed | 4 s
mempool_persist.py | ✓ Passed | 15 s
mempool_reorg.py | ✓ Passed | 4 s
mempool_resurrect_test.py | ✓ Passed | 3 s
mempool_spendcoinbase.py | ✓ Passed | 3 s
merkle_blocks.py | ✓ Passed | 3 s
multi_rpc.py | ✓ Passed | 4 s
net.py | ✓ Passed | 3 s
nulldummy.py | ✓ Passed | 3 s
p2p-compactblocks.py | ✓ Passed | 28 s
p2p-fullblocktest.py | ✓ Passed | 126 s
p2p-leaktests.py | ✓ Passed | 8 s
p2p-mempool.py | ✓ Passed | 3 s
p2p-segwit.py | ✓ Passed | 59 s
p2p-versionbits-warning.py | ✓ Passed | 8 s
preciousblock.py | ✓ Passed | 3 s
prioritise_transaction.py | ✓ Passed | 5 s
proxy_test.py | ✓ Passed | 3 s
rawtransactions.py | ✓ Passed | 9 s
receivedby.py | ✓ Passed | 19 s
reindex.py | ✓ Passed | 12 s
rest.py | ✓ Passed | 9 s
rpcnamedargs.py | ✓ Passed | 3 s
segwit.py | ✓ Passed | 7 s
sendheaders.py | ✓ Passed | 24 s
signmessages.py | ✓ Passed | 3 s
signrawtransactions.py | ✓ Passed | 3 s
txn_clone.py | ✓ Passed | 4 s
txn_doublespend.py --mineblock | ✓ Passed | 4 s
uptime.py | ✓ Passed | 3 s
wallet-accounts.py | ✓ Passed | 3 s
wallet-dump.py | ✓ Passed | 7 s
wallet-encryption.py | ✓ Passed | 8 s
wallet-hd.py | ✓ Passed | 15 s
wallet.py | ✓ Passed | 31 s
walletbackup.py | ✓ Passed | 104 s
zapwallettxes.py | ✓ Passed | 9 s
zmq_test.py | ○ Skipped | 0 s
ALL | ✓ Passed | 735 s (accumulated)
Runtime: 189 s
12:51:19
```
*master*:
```
→ date +"%T" ; ./test_runner.py -q ; date +"%T"
12:40:13
..........................................................................................................................................................................................................................................................................................................................................................................................................................................
TEST | STATUS | DURATION
abandonconflict.py | ✓ Passed | 15 s
bip68-112-113-p2p.py | ✓ Passed | 19 s
blockchain.py | ✓ Passed | 8 s
bumpfee.py | ✓ Passed | 20 s
decodescript.py | ✓ Passed | 3 s
disablewallet.py | ✓ Passed | 3 s
disconnect_ban.py | ✓ Passed | 8 s
fundrawtransaction.py | ✓ Passed | 36 s
getchaintips.py | ✓ Passed | 11 s
httpbasics.py | ✓ Passed | 7 s
import-rescan.py | ✓ Passed | 16 s
importmulti.py | ✓ Passed | 10 s
importprunedfunds.py | ✓ Passed | 5 s
invalidblockrequest.py | ✓ Passed | 4 s
invalidtxrequest.py | ✓ Passed | 3 s
keypool.py | ✓ Passed | 7 s
listsinceblock.py | ✓ Passed | 11 s
listtransactions.py | ✓ Passed | 37 s
mempool_limit.py | ✓ Passed | 4 s
mempool_persist.py | ✓ Passed | 23 s
mempool_reorg.py | ✓ Passed | 7 s
mempool_resurrect_test.py | ✓ Passed | 3 s
mempool_spendcoinbase.py | ✓ Passed | 3 s
merkle_blocks.py | ✓ Passed | 10 s
multi_rpc.py | ✓ Passed | 6 s
net.py | ✓ Passed | 6 s
nulldummy.py | ✓ Passed | 3 s
p2p-compactblocks.py | ✓ Passed | 30 s
p2p-fullblocktest.py | ✓ Passed | 126 s
p2p-leaktests.py | ✓ Passed | 8 s
p2p-mempool.py | ✓ Passed | 3 s
p2p-segwit.py | ✓ Passed | 62 s
p2p-versionbits-warning.py | ✓ Passed | 8 s
preciousblock.py | ✓ Passed | 8 s
prioritise_transaction.py | ✓ Passed | 7 s
proxy_test.py | ✓ Passed | 10 s
rawtransactions.py | ✓ Passed | 15 s
receivedby.py | ✓ Passed | 28 s
reindex.py | ✓ Passed | 12 s
rest.py | ✓ Passed | 12 s
rpcnamedargs.py | ✓ Passed | 3 s
segwit.py | ✓ Passed | 12 s
sendheaders.py | ✓ Passed | 26 s
signmessages.py | ✓ Passed | 3 s
signrawtransactions.py | ✓ Passed | 3 s
txn_clone.py | ✓ Passed | 10 s
txn_doublespend.py --mineblock | ✓ Passed | 10 s
uptime.py | ✓ Passed | 3 s
wallet-accounts.py | ✓ Passed | 3 s
wallet-dump.py | ✓ Passed | 6 s
wallet-encryption.py | ✓ Passed | 8 s
wallet-hd.py | ✓ Passed | 18 s
wallet.py | ✓ Passed | 69 s
walletbackup.py | ✓ Passed | 130 s
zapwallettxes.py | ✓ Passed | 15 s
zmq_test.py | ○ Skipped | 0 s
ALL | ✓ Passed | 936 s (accumulated)
Runtime: 242 s
12:44:36
```
Tree-SHA512: 6dfc4c11fd0caf7de6954c93679cf22c3df0acc6f432e616d1151062a61f456faa8ae2fe670b427868af55bb564802df84c8fd76e90b4b338750dbc23f46ad88
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TestNode is a class responsible for all state related to a bitcoind node
under test. It stores local state, is responsible for tracking the
bitcoind process and delegates unrecognised messages to the RPC
connection.
This commit changes start_nodes and stop_nodes to start and stop the
bitcoind nodes in parallel, making test setup and teardown much faster.
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d34957e [wallet] [tests] Add keypool topup functional test (Jonas Schnelli)
095142d [wallet] keypool mark-used and topup (John Newbery)
c25d90f [wallet] Add HasUnusedKeys() helper (John Newbery)
f2123e3 [wallet] Cache keyid -> keypool id mappings (John Newbery)
83f1ec3 [wallet] Don't hold cs_LastBlockFile while calling setBestChain (John Newbery)
2376bfc [wallet] [moveonly] Move LoadKeyPool to cpp (Matt Corallo)
cab8557 [wallet] [moveonly] Move CAffectedKeysVisitor (Jonas Schnelli)
Pull request description:
This PR contains the first part of #10882 :
- if a key from the keypool is used, mark all keys up to that key as used, and then try to top up the keypool
- top up the keypool on startup
Notably, it does not stop the node or prevent the best block from advancing if the keypool drops below a threshold (which means that transactions may be missed and funds lost if restoring from an old HD wallet backup).
Tree-SHA512: ac681fefeaf7ec2aab2fa1da93d12273ea80bd05eb48d7b3b551ea6e5d975dd97ba7de52b7fba52993823280ac4079cc36cf78a27dac708107ebf8fb6326142b
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f1bf31186 [qa] Fix block message processing error in sendheaders.py (Suhas Daftuar)
Pull request description:
Introduced in #10169
@jnewbery
Tree-SHA512: f330b926c51bd4f1b63738e1ddac23c58cb32345baed36343f7a989b3b9906c5c6e7dbd74b416f662c6ef68b8d256a6c69a977ec5f85789b2c1dc802bc831f6b
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test fails
cc5d38f4b Add option to attach a python debugger if test fails (John Newbery)
Pull request description:
Adds a simple option to the test_framework to attach pdb if the test fails.
Helpful for catching and debugging intermittent failures: Run the test in a loop with this option. The first failure will cause execution to pause and nodes will be left running for interactive debugging.
@sdaftuar
Tree-SHA512: 01cfae15fa3f04ed6ec6a99fef60a6c6a59723429309e81eacd6767caf12f5758f59b337804291ecab33a38a2958f36e2b513d201bee72a2eeb207a67046f952
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faa76d1b7 qa: Fix inv race in example_test (MarcoFalke)
Pull request description:
There have been intermittent test failures on this script.
```py
File "./test/functional/example_test.py", line 216, in run_test
assert_equal(block, 1)
AssertionError: not(2 == 1)
```
Probably the simplest way to fix them is overriding the `on_inv` method, so that no "colliding" getdata for the blocks are sent out.
Additionally, all getdata are now sent in a single message.
Tree-SHA512: 809c2bbfa90a67fc97905769fcbe90ba9abe1aac1f145530934f56a364835973b94d3302b6be68f4f2987acf333bce146bcc4c878c283301871ba5bb1a9bedb6
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This commit adds basic keypool mark-used and topup:
- try to topup the keypool on initial load
- if a key in the keypool is used, mark all keys before that as used and
try to top up
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13b1e9a16 Capitalize bullet points in CONTRIBUTING guide (Evan Klitzke)
Pull request description:
English grammar dictates that these bullet points should be capitalized.
This also makes the capitalization style consistent with the rest of the
document, e.g. the "Decision Making Process" section.
Tree-SHA512: 59f5a8941180ff3862ba63d364c27fd83d2e144299a71b2e784d58f806e8a02d7951dcc80fcc7152d0c78c2d1f5a22db1236af7ea6b9abece8dbe93533e4b65c
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4ccc12a54 [qa] Rewrite BIP66 functional tests (Suhas Daftuar)
d4f0d87b6 [qa] Rewrite BIP65 functional tests (Suhas Daftuar)
Pull request description:
After 122786d0e0170c73536360b705af711e1338adbf, BIP65 and BIP66 activate at
particular fixed heights (without regard to version numbers of blocks
below those heights). Rewrite the functional tests to take
this into account, and remove two tests that weren't really testing anything.
Moves the rewritten functional tests out of the extended test suite, so that they run in travis regularly.
Note: I discovered that the ComparisonTestFramework (which the original versions of these p2p tests were written is, has a bug that caused them to not catch obvious errors, eg if you just comment out setting the script flags for these softforks in ConnectBlock, the versions of these tests in master do not fail(!) -- will separately PR a fix for the comparison test framework).
Tree-SHA512: 2108b79951f2e980854d0d14ccc0fd1810a43dd4251fd6e3b203e7f104ea55e00650bb1a60a28c2801b4249f46563a8559ac3e3cd39db220914acfed0b3b163d
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English grammar dictates that these bullet points should be capitalized.
This also makes the capitalization style consistent with the rest of the
document, e.g. the "Decision Making Process" section.
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ce07638 doc: Add comment to use ValueFromAmount/AmountFromValue for JSON, not utilmoneystr (Wladimir J. van der Laan)
ec05c50 rpc: Use ValueFromAmount instead of FormatMoney in TxToUniv (Wladimir J. van der Laan)
46347ad rpc: Move ValueFromAmount to core_write (Wladimir J. van der Laan)
dac3782 doc: Correct AmountFromValue/ValueFromAmount names (Wladimir J. van der Laan)
Pull request description:
With this, the amounts returned in `decoderawtransaction` will be padded to 8 digits like anywhere else in the API.
This is accomplished by using `ValueFromAmount` in `TxToUniv`, instead of `FormatMoney` which it currently (mistakingly) uses. The `FormatMoney` function is only for debugging/logging use!
To avoid dependency issues, `ValueFromAmount` is moved to `core_write.cpp`, where it also fits better. I don't move `AmountFromValue` to `core_read.cpp` at the same time, as this would have more impact due to the RPCError dependency there.
(n.b.: large number of changed files is solely due to the util_tests JSONs needing update)
Tree-SHA512: 10fc2d27d33a77dbcb57aa7eccd4f53110c05d38eb7df6d40f10f14c08fad4274472e93af75aa59fe68ad0720fdf0930f0108124abef518e0dd162b3d2b2b292
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In v0.15, we disconnect nodes that send us version messages with
unsupported service bits (1 << 5 and 1 << 7). This commit adds a test
that bitcoind will disconnect those nodes before August 1st 2018, and won't
disconnect those nodes after August 1st 2018.
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With this, the amounts returned in `decoderawtransaction` will be
padded to 8 digits like anywhwere else in the API.
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producesignature
e222dc2 Replace ismine with producesignature check in witnessifier (Andrew Chow)
Pull request description:
Instead of using ismine to check whether an address can be spent by us, make the witness version of the script or address first and then use ProduceSignature with the DummySignatureCreator to check if we can
solve for the script.
This is to fix cases where we don't have all of the private keys (for something like a multisig address) but have the redeemscript so we can witnessify it.
Tree-SHA512: 371777aee839cceb41f099109a13689120d35cf3880cde39216596cc2aac5cc1096af7d9cf07ad9306c3b05c073897f4518a7e97f0b88642f1e3b80b799f481e
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Instead of using ismine to check whether an address can be spent by us,
make the witness version of the script or address first and then use
ProduceSignature with the DummySignatureCreator to check if we can
solve for the script.
Also fixes test cases to reflect this change.
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Raise RPC_WALLET_NOT_SPECIFIED instead of RPC_METHOD_NOT_FOUND when a required
wallet filename was not specified in an RPC call.
Also raise more specific RPC_WALLET_NOT_FOUND error instead of
RPC_INVALID_PARAMETER in case an invalid wallet was specified, for consistency.
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This reverts commit d64ac3f4aab13a1a4e8d320b52e7a2b934e011b2 after further discussion.
Tree-SHA512: db1e4ff5b17bcd6fd000a3d21aa74f6b7e4c194e0663c1896a100612671910a7cdadd896b59642420ea016598895b54a8468914847ebefef105a3c47c311d4b2
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d64ac3f [tests] Allow tests to pass when stderr is non-empty (Jonas Schnelli)
Pull request description:
Resurrect #10241 with nits addressed
Not sure how much people want this. Would be useful for functional tests which cause bitcoind to print to stderr.
Tree-SHA512: 28caccf7818fb3ed5a38caef7f77161b1678aa9b8fd12c2d1e76032f409f0d33c40f7ac91e0c8d908df4a44fd01cf97d657a08bae50c6ff17d07f5b2e20c3a6e
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parameter is a reorg'd block
876e92b Testing: listsinceblock should display all transactions that were affected since the given block, including transactions that were removed due to a reorg. (Karl-Johan Alm)
f999c46 listsinceblock: optionally find and list any transactions that were undone due to reorg when requesting a non-main chain block in a new 'removed' array. (Karl-Johan Alm)
Pull request description:
The following scenario will not notify the caller of the fact `tx0` has been dropped:
1. User 1 receives BTC in tx0 from utxo1 in block aa1.
2. User 2 receives BTC in tx1 from utxo1 (same) in block bb1
3. User 1 sees 2 confirmations at block aa3.
4. Reorg into bb chain.
5. User 1 asks `listsinceblock aa3` and does not see that tx0 is now invalidated.
See `listsinceblock.py` commit for related test.
The proposed fix is to iterate from the given block down to the fork point, and to check each transaction in the blocks against the wallet, in addition to including all transactions from the fork point to the active chain tip (the current behavior). Any transactions that were present will now also be listed in the `listsinceblock` output in a new `replaced` array. This operation may be a bit heavy but the circumstances (and perceived frequency of occurrence) warrant it, I believe.
Example output:
```Python
{
'transactions': [],
'replaced': [
{
'walletconflicts': [],
'vout': 1,
'account': '',
'timereceived': 1485234857,
'time': 1485234857,
'amount': '1.00000000',
'bip125-replaceable': 'unknown',
'trusted': False,
'category': 'receive',
'txid': 'ce673859a30dee1d2ebdb3c05f2eea7b1da54baf68f93bb8bfe37c5f09ed22ff',
'address': 'miqEt4kWp9zSizwGGuUWLAmxEcTW9bFUnQ',
'label': '',
'confirmations': -7
}
],
'lastblock': '7a388f27d09e3699102a4ebf81597d974fc4c72093eeaa02adffbbf7527f6715'
}
```
I believe this addresses the comment by @luke-jr in https://github.com/bitcoin/bitcoin/pull/9516#issuecomment-274190081 but I could be wrong..
Tree-SHA512: 607b5dcaeccb9dc0d963d3de138c40490f3e923050b29821e6bd513d26beb587bddc748fbb194503fe618cfe34a6ed65d95e8d9c5764a882b6c5f976520cff35
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since the given block, including transactions that were removed due to a reorg.
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6b4f231 Move transaction combining from signrawtransaction to new RPC (Andrew Chow)
Pull request description:
Create a combinerawtransaction RPC which accepts a json array of hex raw transactions to combine them into one transaction. Signrawtransaction is changed to no longer combine transactions and only accept one transaction at a time.
The tests have been updated to test this. Tests for the signrawtransaction merge have also been removed.
This is part of #10570
Tree-SHA512: 035aebbd6537c1c017d5c8e06d309228b4c23fe52d5b31ffde19741c81a11a6346ddbbdc582b77b02a47f4c22b1952b69d3c2ee1109c29b3f0f1b612d8de53ed
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7ec3343 add gdb attach process to test README (Gregory Sanders)
Pull request description:
Saved me many hours. h/t to @jnewbery for the new guide efforts
Tree-SHA512: 4d8ba1717eb842201079488f1cfe369d5d5114df5278643a3f996c986a51e3e039ea994a6f2f06bf6607b697388ad6561198da4693e3cb1ca4a8424e6d423d85
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Create a combinerawtransaction RPC which accepts a json array of hex raw
transactions to combine them into one transaction. Signrawtransaction is changed
to no longer combine transactions and only accept one transaction at a time.
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cf82a9e Do not allow users to get keys from keypool without reserving them (Matt Corallo)
Pull request description:
fundrawtransaction allows users to add a change output and then
not have it removed from keypool. While it would be nice to have
users follow the normal CreateTransaction/CommitTransaction process
we use internally, there isnt much benefit in exposing this option,
especially with HD wallets, while there is ample room for users to
misunderstand or misuse this option.
This partially reverts #9377. Would be nice to get this for 15 since its kinda crazy we have this option to begin with IMO, will need release notes as an RPC option is now ignored.
Tree-SHA512: 72b5ee9c4a229b84d799dfb00c56fe80d8bba914ce81a433c3f5ab325bf9bf2b839ee658c261734f0ee183ab19435039481014d09c41dbe155e6323e63beb01d
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fundrawtransaction allows users to add a change output and then
not have it removed from keypool. While it would be nice to have
users follow the normal CreateTransaction/CommitTransaction process
we use internally, there isnt much benefit in exposing this option,
especially with HD wallets, while there is ample room for users to
misunderstand or misuse this option.
This could be particularly nasty in some use-cases (especially
pre-HD-split) - eg a user might fundrawtransaction, then call
getnewaddress, hand out the address for someone to pay them, then
sendrawtransaction. This may result in the user thinking they have
received payment, even though it was really just their own change!
This could obviously result in needless key-reuse.
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