After upgrading the node, try to go back to the original version to make
sure that using a newver node version does not prevent the wallet file
from being downgraded again.
de8905adf2 test: use unittest and test_runner for test framework unit testing (Gloria Zhao)
Pull request description:
Proposal for unit testing on test_framework functions:
1. Use the python `unittest` library. Don't use test_framework to test itself.
2. Put the tests inside the same file as the functions they are testing.
3. Call the tests from `test_runner.py`. To include more Test Framework tests, add the filename to the list `TEST_FRAMEWORK_MODULES`. Don't add new files or change the list of accepted script prefixes.
Makes these changes for `bn2vch` (followup to [this comment](https://github.com/bitcoin/bitcoin/pull/18378#pullrequestreview-377271264)).
ACKs for top commit:
jnewbery:
Tested ACK de8905adf2. Great stuff gzhao408 . Thanks for this!
Tree-SHA512: 91572d43e203a1864765b93a9472667994115ec38b271f2b2f9fcd0f0112b393fc24ba7d2371d5a34b0a6a4522f6b934fc5164363819aa7ed8d6c6c9a60cc101
cd543d9193 test: check misbehavior more independently in p2p_filter.py (Danny Lee)
Pull request description:
This expands on #18672 in two ways:
- Check positive cases (`filterload` accepted, `filteradd` accepted) in addition to the negative cases added in #18672
- Address MarcoFalke 's [suggestion](https://github.com/bitcoin/bitcoin/pull/18672#discussion_r412101752) to successfully load a filter before testing `filteradd`
ACKs for top commit:
theStack:
re-ACK cd543d9193
Tree-SHA512: f82402f6287ccddf08b38b6432d5e2b2b2ef528802a981d04c24bac459022f732d9090d4849d72d3d1eb2c757161dcb18c4c036b6e11dc80114e9cd49f21c3bd
8098dea069 test: Add mempool_updatefromblock.py (Hennadii Stepanov)
Pull request description:
This PR adds a new test for mempool update of transaction descendants/ancestors information (count, size) when transactions have been re-added from a disconnected block to the mempool.
It could be helpful for working on PRs like #17925, #18191.
ACKs for top commit:
ariard:
ACK 8098dea
Tree-SHA512: 7e808fa8df8d7d7a7dbdc3f79361049b49c7bce9b58fd5539b28c9636bedac747695537e500d7ed68dc8bdb80167ad3f1c01086f7551691405d2ba2e38ef1d06
66fe7b1a98 test: added test for upgradewallet RPC (Harris)
Pull request description:
This PR adds tests for the newly merged *upgradewallet* RPC.
Additionally, it expands `test_framework/util.py` by adding the function `adjust_bitcoin_conf_for_pre_17` to support nodes that don't parse configuration sections.
This test uses two older node versions, v0.15.2 and v0.16.3, to create older wallet versions to be used by `upgradewallet`.
Fixes https://github.com/bitcoin/bitcoin/issues/18767
Top commit has no ACKs.
Tree-SHA512: bb72ff1e829e2c3954386cc308842820ef0828a4fbb754202b225a8748f92d4dcc5ec77fb146bfd5484a5c2f29ce95adf9f3fb4483437088ff3ea4a8d2c442c1
50fc4df6c4 [mempool] Persist unbroadcast set to mempool.dat (Amiti Uttarwar)
297a178536 [test] Integration tests for unbroadcast functionality (Amiti Uttarwar)
6851502472 [refactor/test] Extract P2PTxInvStore into test framework (Amiti Uttarwar)
dc1da48dc5 [wallet] Update the rebroadcast frequency to be ~1/day. (Amiti Uttarwar)
e25e42f20a [p2p] Reattempt initial send of unbroadcast transactions (Amiti Uttarwar)
7e93eecce3 [util] Add method that returns random time in milliseconds (Amiti Uttarwar)
89eeb4a333 [mempool] Track "unbroadcast" transactions (Amiti Uttarwar)
Pull request description:
This PR introduces mempool tracking of unbroadcast transactions and periodic reattempts at initial broadcast. This is a part of the rebroadcast project, and a standalone privacy win.
The current rebroadcast logic is terrible for privacy because 1. only the source wallet rebroadcasts transactions and 2. it does so quite frequently. In the current system, if a user submits a transaction that does not immediately get broadcast to the network (eg. they are offline), this "rebroadcast" behavior is the safety net that can actually serve as the initial broadcast. So, keeping the attempts frequent is important for initial delivery within a reasonable timespan.
This PR aims to improve # 2 by reducing the wallet rebroadcast frequency to ~1/day from ~1/15 min. It achieves this by separating the notion of initial broadcast from rebroadcasts. With these changes, the mempool tracks locally submitted transactions & periodically reattempts initial broadcast. Transactions submitted via the wallet or RPC are added to an "unbroadcast" set & are removed when a peer sends a `getdata` request, or the transaction is removed from the mempool. Every 10-15 minutes, the node reattempts an initial broadcast. This enables reducing the wallet rebroadcast frequency while ensuring the transactions will be propagated to the network.
For privacy improvements around # 1, please see #16698.
Thank you to gmaxwell for the idea of how to break out this subset of functionality (https://github.com/bitcoin/bitcoin/pull/16698#issuecomment-571399346)
ACKs for top commit:
fjahr:
Code review ACK 50fc4df6c4
MarcoFalke:
ACK 50fc4df6c4, I think this is ready for merge now 👻
amitiuttarwar:
The current tip `50fc4df` currently has 6 ACKs on it, so I've opened #18807 to address the last bits.
jnewbery:
utACK 50fc4df6c4.
ariard:
Code Review ACK 50fc4df (minor points no need to invalid other ACKs)
robot-visions:
ACK 50fc4df6c4
sipa:
utACK 50fc4df6c4
naumenkogs:
utACK 50fc4df
Tree-SHA512: 2dd935d645d5e209f8abf87bfaa3ef0e4492705ce7e89ea64279cb27ffd37f4727fa94ad62d41be331177332f8edbebf3c7f4972f8cda10dd951b80a28ab3c0f
7b2b06dfe3 tests: Add missing sync_all to wallet_importdescriptors.py (Andrew Chow)
Pull request description:
node1 will sometimes do sendtoaddress before it has received a funding transaction which will cause the test to fail. sync_all to ensure it gets the transaction first.
Fixes#18800
ACKs for top commit:
instagibbs:
ACK 7b2b06d The wallet endpoint right after is indeed node 1.
Tree-SHA512: b610a771d062b5f955cd70b34337577a1ab8dacbf4be20aa74e1e8234495b0be9faff138eb1713f29decb5574446e0583e221bc2c9a6eea13611b422ea3a296a
fa301fec96 test: Fix wallet_bumpfee intermittent error (MarcoFalke)
Pull request description:
Remove incorrect and undocumented `connect_nodes(self.nodes[0], 1)`.
Issue is that transactions are re-relayed (going full circle) between the two nodes, that have two connections between each other.
https://travis-ci.org/github/bitcoin/bitcoin/jobs/679201559#L6992
Also fix some pep8 while touching the file
This bug has been introduced by accident in c1dde3a949
ACKs for top commit:
achow101:
ACK fa301fec96
Tree-SHA512: a6565ca30dbe44b02e3f58f159d2515c2ea4a74030118fafc1a3391ce980a4b6d4505dcf51315fda24843f72550a7dea7407b877b3b796883dd73d3b6f009e6f
node1 will sometimes do sendtoaddress before it has received a funding
transaction which will cause the test to fail. sync_all to ensure it
gets the transaction first.
223588b1bb Add a --descriptors option to various tests (Andrew Chow)
869f7ab30a tests: Add RPCOverloadWrapper which overloads some disabled RPCs (Andrew Chow)
cf06062859 Correctly check for default wallet (Andrew Chow)
886e0d75f5 Implement CWallet::IsSpentKey for non-LegacySPKMans (Andrew Chow)
3c19fdd2a2 Return error when no ScriptPubKeyMan is available for specified type (Andrew Chow)
388ba94231 Change wallet_encryption.py to use signmessage instead of dumpprivkey (Andrew Chow)
1346e14831 Functional tests for descriptor wallets (Andrew Chow)
f193ea889d add importdescriptors RPC and tests for native descriptor wallets (Hugo Nguyen)
ce24a94494 Add IsLegacy to CWallet so that the GUI knows whether to show watchonly (Andrew Chow)
1cb42b22b1 Generate new descriptors when encrypting (Andrew Chow)
82ae02b165 Be able to create new wallets with DescriptorScriptPubKeyMans as backing (Andrew Chow)
b713baa75a Implement GetMetadata in DescriptorScriptPubKeyMan (Andrew Chow)
8b9603bd0b Change GetMetadata to use unique_ptr<CKeyMetadata> (Andrew Chow)
72a9540df9 Implement FillPSBT in DescriptorScriptPubKeyMan (Andrew Chow)
84b4978c02 Implement SignMessage for descriptor wallets (Andrew Chow)
bde7c9fa38 Implement SignTransaction in DescriptorScriptPubKeyMan (Andrew Chow)
d50c8ddd41 Implement GetSolvingProvider for DescriptorScriptPubKeyMan (Andrew Chow)
f1ca5feb4a Implement GetKeypoolOldestTime and only display it if greater than 0 (Andrew Chow)
586b57a9a6 Implement ReturnDestination in DescriptorScriptPubKeyMan (Andrew Chow)
f866957979 Implement GetReservedDestination in DescriptorScriptPubKeyMan (Andrew Chow)
a775f7c7fd Implement Unlock and Encrypt in DescriptorScriptPubKeyMan (Andrew Chow)
bfdd073486 Implement GetNewDestination for DescriptorScriptPubKeyMan (Andrew Chow)
58c7651821 Implement TopUp in DescriptorScriptPubKeyMan (Andrew Chow)
e014886a34 Implement SetupGeneration for DescriptorScriptPubKeyMan (Andrew Chow)
46dfb99768 Implement writing descriptorkeys, descriptorckeys, and descriptors to wallet file (Andrew Chow)
4cb9b69be0 Implement several simple functions in DescriptorScriptPubKeyMan (Andrew Chow)
d1ec3e4f19 Add IsSingleType to Descriptors (Andrew Chow)
953feb3d27 Implement loading of keys for DescriptorScriptPubKeyMan (Andrew Chow)
2363e9fcaa Load the descriptor cache from the wallet file (Andrew Chow)
46c46aebb7 Implement GetID for DescriptorScriptPubKeyMan (Andrew Chow)
ec2f9e1178 Implement IsHDEnabled in DescriptorScriptPubKeyMan (Andrew Chow)
741122d4c1 Implement MarkUnusedAddresses in DescriptorScriptPubKeyMan (Andrew Chow)
2db7ca765c Implement IsMine for DescriptorScriptPubKeyMan (Andrew Chow)
db7177af8c Add LoadDescriptorScriptPubKeyMan and SetActiveScriptPubKeyMan to CWallet (Andrew Chow)
78f8a92910 Implement SetType in DescriptorScriptPubKeyMan (Andrew Chow)
834de0300c Store WalletDescriptor in DescriptorScriptPubKeyMan (Andrew Chow)
d8132669e1 Add a lock cs_desc_man for DescriptorScriptPubKeyMan (Andrew Chow)
3194a7f88a Introduce WalletDescriptor class (Andrew Chow)
6b13cd3fa8 Create LegacyScriptPubKeyMan when not a descriptor wallet (Andrew Chow)
aeac157c9d Return nullptr from GetLegacyScriptPubKeyMan if descriptor wallet (Andrew Chow)
96accc73f0 Add WALLET_FLAG_DESCRIPTORS (Andrew Chow)
6b8119af53 Introduce DescriptorScriptPubKeyMan as a dummy class (Andrew Chow)
06620302c7 Introduce SetType function to tell ScriptPubKeyMans the type and internal-ness of it (Andrew Chow)
Pull request description:
Introducing the wallet of the glorious future (again): native descriptor wallets. With native descriptor wallets, addresses are generated from descriptors. Instead of generating keys and deriving addresses from keys, addresses come from the scriptPubKeys produced by a descriptor. Native descriptor wallets will be optional for now and can only be created by using `createwallet`.
Descriptor wallets will store descriptors, master keys from the descriptor, and descriptor cache entries. Keys are derived from descriptors on the fly. In order to allow choosing different address types, 6 descriptors are needed for normal use. There is a pair of primary and change descriptors for each of the 3 address types. With the default keypool size of 1000, each descriptor has 1000 scriptPubKeys and descriptor cache entries pregenerated. This has a side effect of making wallets large since 6000 pubkeys are written to the wallet by default, instead of the current 2000. scriptPubKeys are kept only in memory and are generated every time a descriptor is loaded. By default, we use the standard BIP 44, 49, 84 derivation paths with an external and internal derivation chain for each.
Descriptors can also be imported with a new `importdescriptors` RPC.
Native descriptor wallets use the `ScriptPubKeyMan` interface introduced in #16341 to add a `DescriptorScriptPubKeyMan`. This defines a different IsMine which uses the simpler model of "does this scriptPubKey exist in this wallet". Furthermore, `DescriptorScriptPubKeyMan` does not have watchonly, so with native descriptor wallets, it is not possible to have a wallet with both watchonly and non-watchonly things. Rather a wallet with `disable_private_keys` needs to be used for watchonly things.
A `--descriptor` option was added to some tests (`wallet_basic.py`, `wallet_encryption.py`, `wallet_keypool.py`, `wallet_keypool_topup.py`, and `wallet_labels.py`) to allow for these tests to use descriptor wallets. Additionally, several RPCs are disabled for descriptor wallets (`importprivkey`, `importpubkey`, `importaddress`, `importmulti`, `addmultisigaddress`, `dumpprivkey`, `dumpwallet`, `importwallet`, and `sethdseed`).
ACKs for top commit:
Sjors:
utACK 223588b1bb (rebased, nits addressed)
jonatack:
Code review re-ACK 223588b1bb.
fjahr:
re-ACK 223588b1bb
instagibbs:
light re-ACK 223588b
meshcollider:
Code review ACK 223588b1bb
Tree-SHA512: 59bc52aeddbb769ed5f420d5d240d8137847ac821b588eb616b34461253510c1717d6a70bab8765631738747336ae06f45ba39603ccd17f483843e5ed9a90986
Test the test_framework, but don't use test_framework objects or functions to test itself
Use python unittest library and put test_framework's unit tests inside their respective files
Add the filename to TEST_FRAMEWORK_MODULES in test_runner
Aggregate all test_framework tests into one TestSuite to run before the functional tests in test_runner
Delete framework_test_script, move test_bn2vch to script.py and add to TEST_FRAMEWORK_MODULES in test_runner
fa8b9b5d1f test: Fix intermittent failure in wallet_importmulti (MarcoFalke)
Pull request description:
The wallet is async, so after generating a block, we must call `syncwithvalidationinterfacequeue`. Otherwise the timestamp will be of the previous block.
https://travis-ci.org/github/bitcoin/bitcoin/jobs/677685073#L2648
ACKs for top commit:
promag:
ACK fa8b9b5d1f.
Tree-SHA512: c21f9912aabbe22019d4ac9d0da06d6e46ef7f2a84d2781110e04c9836eb0ecf90a22cf2bae7f608be611670d17b20600135d1c5e5404aa1e762839816285fb4
as defined in PEP 3135:
"The new syntax:
super()
is equivalent to:
super(__class__, <firstarg>)
where __class__ is the class that the method was defined in, and <firstarg> is
the first parameter of the method (normally self for instance methods, and cls
for class methods)."
2495110012 test: add coverage for -rpcwallet cli option (Jon Atack)
Pull request description:
The bitcoin-cli `-rpcwallet=` option is an essential RPC/CLI option when more than one wallet is loaded (see `bitcoin-cli -help | grep -A5 rpcwallet` or `src/bitcoin-cli.cpp::L61`) and it currently has no test coverage.
It is not only used by users, but also by the test framework and ~10 test files via `get_wallet_rpc()`.
This PR adds coverage, while simultaneously improving the `-getinfo` coverage when multiple wallets are loaded. This is similar to the test coverage that would be added in #18594.
ACKs for top commit:
robot-visions:
ACK 2495110012
Tree-SHA512: caaa8b99fb8fa481ab2c6b2a287ed29720bb4553c3f66657462c44fa2990acaaf36cabeaaf81408678e5fdce4e105d729dd94b5ed8588dd1a6f2cb03fc25acf3
c4027e7350 refactor: test: use wait_for_getdata() in p2p_compactblocks.py (Sebastian Falbesoner)
Pull request description:
The method `wait_for_getdata()` was recently changed to be more precise by waiting for a specified list of hashes, instead of only matching _any_ `getdata` message (see Issue #18614 and PR #18690). This PR replaces the remaining occurences of manual inspection of `last_messages` with this call.
ACKs for top commit:
robot-visions:
ACK c4027e7350
Tree-SHA512: e10b346742f235b6ee2ef1f32f7fd74406c1a277389f020fb9913a93e94cc9530e1e9414872b83c9d2ae652ebce2b09b2c8c8372260c1afb4e0e54fbf7a935b0
fa262712ca test: Check submitblock return values (MarcoFalke)
Pull request description:
Add `assert_equal` in some tests to check the `submitblock` return value
ACKs for top commit:
robot-visions:
ACK fa262712ca
Tree-SHA512: 25d9effe82a4f6852184b9ac848f96336cc2cafb0bb07edb2792f00cd363f0759575bc9c164dd62f64425d3754028b4acd0675600c07d51277aa80bf66c6f960
8f5dc8800a test: display command line options passed to send_cli() in debug log (Jon Atack)
Pull request description:
as per https://github.com/bitcoin/bitcoin/pull/18691#discussion_r411382589, and revert two cli calls changed in #18691 from rpc commands back to command line options (these were the only occurrences).
ACKs for top commit:
MarcoFalke:
ACK 8f5dc8800a
Tree-SHA512: fcb3eca00aa4099066028c90d5e50a02e074366e09a17f5f5b937d9f7562dd054ff65681aa0ad4c94f6de1e98b1e2b9ac4cd084ddc297010253989a80483b1b9
fae98668d1 test: Fix intermittent error in mempool_reorg (MarcoFalke)
Pull request description:
Example: https://travis-ci.org/github/bitcoin/bitcoin/jobs/677689899#L4717
Also speed up tx relay and fix two pep8 errors while touching the file anyway.
ACKs for top commit:
vasild:
utACK fae9866
Tree-SHA512: 23a7894e71ad0e1a59c74c73643708fca21b505fa4e980038d554294063fd63c396669eefb233ffdffb0083968e51b702c643cb449df8f656dd8345a20f33907
Check that...
- mempool tracks & reattempts delivery of a transaction where a GETDATA hasn't
been requested by a peer yet.
- transaction delivery is not attempted again after GETDATA is received.
- transaction is removed from the unbroadcast set when its removed from the
mempool.
Since the mempool unbroadcast mechanism handles the reattempts for initial
broadcast, the wallet rebroadcast attempts can be much less frequent
(previously ~1/30 min)
Adds a --descriptors option globally to the test framework. This will
make the test create and use descriptor wallets. However some tests may
not work with this.
Some tests are modified to work with --descriptors and run with that
option in test_runer:
* wallet_basic.py
* wallet_encryption.py
* wallet_keypool.py
* wallet_keypool_topup.py
* wallet_labels.py
* wallet_avoidreuse.py
RPCOverloadWrapper overloads some deprecated or disabled RPCs with
an implementation using other RPCs to avoid having a ton of code churn
around replacing those RPCs.
9f5608c289 test: check for matching object hashes in wait_for_getdata (Danny Lee)
Pull request description:
Previously, `wait_for_getdata` only looked for the presence of a recent `"getdata"` message. Additionally checking the object hashes inside the message should make tests involving `wait_for_getdata` more robust.
`p2p_sendheaders.py` already overrides `wait_for_getdata` do this check; we can use the same approach consistently across all tests that call `wait_for_getdata`.
This PR is progress towards #18614 , but closing that issue would also involve some additional changes to `wait_for_getheaders`.
ACKs for top commit:
theStack:
ACK 9f5608c289🍻
Tree-SHA512: 8e7f95881c19631db014d4bb2399fea0d14686a32542f6ca3b60809744b0d684eac4e4c107c87143991f3cd0c2d4ab09d0c17486239768a9b40bee25f2e4d54a
3c21db7b78 [test] add 8 error messages to feature_segwit and change version to type (Gloria Zhao)
Pull request description:
Followup to [this](https://github.com/bitcoin/bitcoin/pull/15169/files#r303673472) comment on functional test feature_segwit.py verifying that unsigned witness transactions are invalid.
(1) Changes 8 error messages from "mandatory-script-verify-flag" to "non-mandatory-script-verify-flag" and with more specific error messages.
(2) Edits comments that incorrectly describe the test, namely that the `v` variable corresponds to using P2WSH versus P2WPKH, not witness versions.
ACKs for top commit:
MarcoFalke:
ACK 3c21db7b78🍾
Tree-SHA512: 3734ea3762667636c4fb20f5285634ab94d6b3527b7390fcc5e41b4582829dfe0099beabeaed42098613d168ede3385a6ffcd73989d1fa9dbd18004f5e9cf083
P2WPKH witness program without signature -> throws "hash mismatch" error
P2WSH witness program without signature -> throws "empty witness" error
same errors for P2SH_P2WPKH and P2SH_P2WSH respectively when passed redeemScript but no signature
P2SH_P2WPKH and P2SH_P2WSH with no signature fail with "Operation not valid with current stack size" when not signed due to missing input
change VER to TYPE and constants WIT_V0 to P2WPKH=0 and WIT_V1 to P2WSH=1
fac2fc4dd8 test: Increase debugging to hunt down mempool_reorg intermittent failure (MarcoFalke)
Pull request description:
Top commit has no ACKs.
Tree-SHA512: 4094b44afaa623e58b69f8d0332e60f0150b9ae2fd8bb265210d85546d887672ab8a3435cd9b086be14f69ab5b17e0f9fae06bd8aec1e7947ca766dd72b577c4
a9ecbdfcaa test: add more inactive filter tests to p2p_filter.py (Sebastian Falbesoner)
5eae034996 net: limit BIP37 filter lifespan (active between 'filterload' and 'filterclear') (Sebastian Falbesoner)
Pull request description:
This PR fixes https://github.com/bitcoin/bitcoin/issues/18483. On the master branch, there is currently _always_ a BIP37 filter set for every peer: if not a specific filter is set through a `filterload` message, a default match-everything filter is instanciated and pointed to via the `CBloomFilter` default constructor; that happens both initially, when the containing structure `TxRelay` is constructed:
c0b389b335/src/net.h (L812)
and after a loaded filter is removed again through a `filterclear` message:
c0b389b335/src/net_processing.cpp (L3201)
The behaviour was introduced by commit 37c6389c5a (an intentional covert fix for [CVE-2013-5700](https://github.com/bitcoin/bitcoin/pull/18515), according to gmaxwell).
This default match-everything filter leads to some unintended side-effects:
1. `getdata` request for filtered blocks (i.e. type `MSG_FILTERED_BLOCK`) are always responded to with `merkleblock`s, even if no filter was set by the peer, see issue #18483 (strictly speaking, this is a violation of BIP37) c0b389b335/src/net_processing.cpp (L1504-L1507)
2. if a peer sends a `filteradd` message without having loaded a filter via `filterload` before, the intended increasing of the banscore never happens (triggered if `bad` is set to true, a few lines below) c0b389b335/src/net_processing.cpp (L3182-L3186)
This PR basically activates the `else`-branch code paths for all checks of `pfilter` again (on the master branch, they are dead code) by limiting the pointer's lifespan: instead of always having a filter set, the `pfilter` is only pointing to a `CBloomFilter`-instance after receiving a `filterload` message and the instance is destroyed again (and the pointer nullified) after receiving a `filterclear` message.
Here is a before/after comparison in behaviour:
| code part / scenario | master branch | PR branch |
| --------------------------------------------- | ---------------------------------- | ---------------------------------------------------- |
| `getdata` processing for `MSG_FILTERED_BLOCK` | always responds with `merkleblock` | only responds if filter was set via `filterload` |
| `filteradd` processing, no filter was loaded | nothing | peer's banscore increases by 100 (i.e. disconnect) |
On the other code parts where `pfilter` is checked there is no change in the logic behaviour (except that `CBloomFilter::IsRelevantAndUpdate()` is unnecessarily called and immediately returned in the master branch).
Note that the default constructor of `CBloomFilter` is only used for deserializing the received `filterload` message and nowhere else. The PR also contains a functional test checking that sending `getdata` for filtered blocks is ignored by the node if no bloom filter is set.
ACKs for top commit:
MarcoFalke:
re-ACK a9ecbdfcaa, only change is in test code 🕙
Tree-SHA512: 1a656a6d74ccaf628e7fdca063ba63fbab2089e0b6d0a11be9bbd387c2ee6d3230706ff8ffc1a55711481df3d4547137dd7c9d9184d89eaa43ade4927792d0b6
by calling wait_for_cookie_credentials() to ensure the cookie file is written
and auth credentials available for testing the CLI -rpcwait option before the
RPC connection is up.