- use ALLOW_BOOL for -list arg instead of ALLOW_ANY
- touch up `-asymptote=<n1,n2,n3...>` help
- pack Args struct a bit more efficiently
- handle args in alphabetical order
When it is not easily possible to stabilize benchmark machine and code
the argument -min_time can be used to specify a minimum duration
that a benchmark should take. E.g. choose -min_time=1000 if you
are willing to wait about 1 second for each benchmark result.
The default is now set to 10ms instead of 0, which should make runs on
fast machines more stable with negligible slowdown.
Moves copying of the setup into the benchmark loop so it is possible
to run the loop for an arbitrary number of times.
The overhead due to copying the candidates inside the loop is about 3%.
Moves some of the setup into the benchmark loop so it is possible to run
the loop for an arbitrary number of times. Due to recent optimizations
in #22974 the benchmark now runs much faster, so the inner loop now calls
Good() 32 times as often to get better numbers.
Renamed the benchmark to AddrManAddThenGood because that's now what is
actually tested. To get the the number of just Good(), one needs to
subtract the benchmark result of AddrManAdd.
Introduced in #19055, MuHashDiv benchmark used to multiply with a loop
based on epochIterations. That does not do what it is supposed to do,
because epochIterations() is determined automatically from nanobench.
Also, multiplication is not needed for the algorithm (as pointed out by
a comment in #19055), so it's better to remove this loop.
Most importantly, this update fixes a bug in nanobench that always
disabled performance counters on linux.
It also adds another sanitizer suppression that is caught in clang++ 12.
a43b8e9555 build: set OSX_MIN_VERSION to 10.15 (fanquake)
Pull request description:
Taken out of #20744, as splitting up some of the build changes was mentioned [here](https://github.com/bitcoin/bitcoin/pull/22937#discussion_r707303172).
This is required to use `std::filesystem` on macOS, as support for it only landed in the libc++.dylib shipped with 10.15. So if we want to move to using `std::filesystem` for `23.0`, this bump is required.
See also: https://developer.apple.com/documentation/xcode-release-notes/xcode-11-release-notes
> Clang now supports the C++17 \<filesystem\> library for iOS 13, macOS 10.15, watchOS 6, and tvOS 13.
macOS 10.15 was released in October 2019. macOS OS's seem to have a life of about 3 years, so it's possible that 10.14 will become officially unsupported by the end of 2021 and prior to the release of 23.0.
Guix builds:
```bash
bash-5.1# find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
abc8b749be65f1339dcdf44bd1ed6ade2533b8e3b5030ad1dde0ae0cede78136 guix-build-a43b8e955558/output/dist-archive/bitcoin-a43b8e955558.tar.gz
1edcc301eb4c02f3baa379beb8d4c78e661abc24a293813bc9d900cf7255b790 guix-build-a43b8e955558/output/x86_64-apple-darwin19/SHA256SUMS.part
e9dbb5594a664519da778dde9ed861c3f0f631525672e17a67eeda599f16ff44 guix-build-a43b8e955558/output/x86_64-apple-darwin19/bitcoin-a43b8e955558-osx-unsigned.dmg
11b23a17c630dddc7594c25625eea3de42db50f355733b9ce9ade2d8eba3a8f3 guix-build-a43b8e955558/output/x86_64-apple-darwin19/bitcoin-a43b8e955558-osx-unsigned.tar.gz
257ba64a327927f94d9aa0a68da3a2695cf880b3ed1a0113c5a966dcc426eb5e guix-build-a43b8e955558/output/x86_64-apple-darwin19/bitcoin-a43b8e955558-osx64.tar.gz
```
ACKs for top commit:
hebasto:
ACK a43b8e9555
jarolrod:
ACK a43b8e9
Tree-SHA512: 9ac77be7cb56c068578860a3b2b8b7487c9e18b71b14aedd77a9c663f5d4bb19756d551770c02ddd12f1797beea5757b261588e7b67fb53509bb998ee8022369
cdaab90662 Add test for addrman consistency check on restart with asmap (Jon Atack)
869f136816 Add test for rpc addpeeraddress with "tried" argument (Jon Atack)
ef242f5213 Allow passing "tried" to rpc addpeeraddress to call CAddrMan::Good() (Jon Atack)
Pull request description:
This pull adds a `tried` argument to RPC addpeeraddress and a regression test for the recent addrman/asmap changes and issue.
PR #22697 introduced a reproducible bug in commit 181a1207 that fails addrman consistency checks and causes it to significantly lose peer entries when the `-asmap` configuration option is used.
The issue occurs upon bitcoind restart due to an initialization order change in `src/init.cpp` in that commit, whereby CAddrman asmap is set after deserializing `peers.dat`, rather than before.
Issue reported on the `#bitcoin-core-dev` IRC channel starting at https://www.erisian.com.au/bitcoin-core-dev/log-2021-08-23.html#l-263.
```
addrman lost 22813 new and 2 tried addresses due to collisions or invalid addresses
ADDRMAN CONSISTENCY CHECK FAILED!!! err=-17 bitcoind: ./addrman.h:707: void CAddrMan::Check() const: Assertion `false' failed. Aborted
```
How to reproduce:
- `git checkout 181a1207`, build, and launch bitcoind with the `-asmap` and `-checkaddrman=1` configuration options enabled
- restart bitcoind
- bitcoind aborts on the second call to the addrman consistency checks in `CAddrMan::Check()`
How to test this pull:
- `git checkout 181a1207`, cherry pick the first commit of this branch, build, git checkout this branch, run `test/functional/rpc_net.py`, which should pass, and then run `test/functional/feature_asmap.py`, which should fail with the following output:
```
AssertionError: Unexpected stderr bitcoind: ./addrman.h:739: void CAddrMan::Check() const: Assertion `false' failed.
```
ACKs for top commit:
jnewbery:
utACK cdaab90662
mzumsande:
re-ACK cdaab90662 (based on code review of diff to d586817)
vasild:
ACK cdaab90662
Tree-SHA512: 0251a18fea629b62486fc907d7ab0e96c6df6fadb9e4d62cff018bc681afb6ac31e0e7258809c0a88f91e4a36c4fb0b16ed294ce47ef30585217de89c3342399
faa81f9486 test: Add addrman deserialization error tests (MarcoFalke)
Pull request description:
Add missing test coverage
ACKs for top commit:
jonatack:
Light code review ACK faa81f9486 and ran the test
Tree-SHA512: 8b254ba912c83473125faaf7df02a33a99840b40460bdce1486991a01de9ba6371c053354318f09b69fdc18c823bca3f2f7d341db0f8950e22d8435acbaa9cf5
fa7e3f1fc1 test: Replace MiniWallet scan_blocks with rescan_utxos (MarcoFalke)
Pull request description:
This avoids having to fiddle with the `start` and `num` parameters and instead use the `scantxoutset` RPC functionality via `rescan_utxos`.
ACKs for top commit:
Shubhankar-Gambhir:
ACK fa7e3f1, all tests were succesfull
theStack:
re-ACK fa7e3f1fc1
Tree-SHA512: 6f47d2acac9f180b2b0f8f04797e74ecb1fc180f6b164c67813a3a1f97acea54baed74e5e0a3512e3babf76b105c09e1ba4cad818c83c7cb2beb7377b4c96954
c17f554fcc Fix BlockAssembler::AddToBlock, CTxMemPool::PrioritiseTransaction logging (Jon Atack)
Pull request description:
This is a tale of two fees, er, fee rates... indeed, one is misdescribed as a fee, and the other is incorrectly called a fee rate.
From this review discussion: https://github.com/bitcoin/bitcoin/pull/22689#discussion_r695866211 (thanks to John Newbery).
ACKs for top commit:
laanwj:
Code review ACK c17f554fcc
Tree-SHA512: 3d9df3209a72562c5f9bbf815923d5b089d04491b8d19caa2c04158c501b47ef01e47f1c32d89adcbaf3c6357329507f65b4bb2963214c3451bbfa61ac812530
9bdda50151 Enable TLS in links in documentation (Jeremy Rand)
Pull request description:
This PR enables TLS in several documentation links, which improves security.
ACKs for top commit:
fanquake:
ACK 9bdda50151
Tree-SHA512: 9d04d8771a9daf3c3b9914ff324e2eabfdf3ff5ae7f7dc92b84a1f3527010ceb860e73873a8f24d6051763eb472d9ea324ccbd6129a40318a520ca88c05f0586
fac67b393b ci: Set --nocleanup for Windows functional tests (MarcoFalke)
Pull request description:
Example: https://cirrus-ci.com/task/6292402450202624
ACKs for top commit:
hebasto:
ACK fac67b393b
Tree-SHA512: b8da82d1492f66b43e4afc525805a42709a7b13e64320681801e3e5b546da3d82933f5248464900620aa89eac4629f0b21cde623caf45950f1341979b47fa621
57ce20307e fuzz: allow lower number of sources (Martin Zumsande)
acf656d540 fuzz: Use public interface to fill addrman tried tables (Martin Zumsande)
eb2e113df1 addrman: Improve performance of Good (Martin Zumsande)
Pull request description:
Currently, `CAddrman::Good()` is rather slow because the process of moving an addr from new to tried involves looping over the new tables twice:
1) In `Good_()`, there is a loop searching for a new bucket the addr is currently in, but this information is never used except for aborting if it is not found anywhere (since [this commit](e6b343d880 (diff-49d1faa58beca1ee1509a247e0331bb91f8604e30a483a7b2dea813e6cea02e2R263)) it is no longer passed to `MakeTried`)
This is unnecessary because in a non-corrupted addrman, an address that is not in New must be either in Tried or not at all in addrman, both cases in which we'd return early in `Good_()` and never get to this point.
I removed this loop (and left a check for `nRefCount` as a belt-and-suspenders check).
2) In `MakeTried()`, which is called from `Good_()`, another loop removes all instances of this address from new. This can be spedup by stopping the search at `nRefCount==0`. Further reductions in `nRefCount` would only lead to an assert anyway.
Moreover, the search can be started at the bucket determined by the source of the addr for which `Good` was called, so that if it is present just once in New, no further buckets need to be checked.
While calls to `Good()` are not that frequent normally, the performance gain is clearly seen in the fuzz target `addman_serdeser`, where, because of the slowness in creating a decently filled addrman, a shortcut was created that would directly populate the tried tables by reaching into addrman's internals, bypassing `Good()` (#21129).
I removed this workaround in the second commit: Using `Good()` is still slower by a factor of 2 (down from a factor of ~60 before), but I think that this compensated by the advantages of not having to reach into the internal structures of addrman (see https://github.com/jnewbery/bitcoin/pull/18#issuecomment-775218676).
[Edit]: For benchmark results see https://github.com/bitcoin/bitcoin/pull/22974#issuecomment-919435266 and https://github.com/bitcoin/bitcoin/pull/22974#issuecomment-920445700 - the benchmark `AddrManGood` shows a significant speedup by a factor >100.
ACKs for top commit:
naumenkogs:
ACK 57ce20307e
jnewbery:
ACK 57ce20307e
laanwj:
Code review ACK 57ce20307e
theStack:
ACK 57ce20307e
vasild:
ACK 57ce20307e
Tree-SHA512: fb6dfc198f2e28bdbb41cef9709828f22d83b4be0e640a3155ca42e771b6f58466de1468f54d773e794f780a79113f9f7d522032e87fdd75bdc4d99330445198
7c3712fa32 cli: Display all proxies in -getinfo (klementtan)
Pull request description:
**Changes**: Display all proxies in `-getinfo`
**Motivation**:
* Currently `-getinfo` only return the proxy of the first network in `getnetworkinfo`.
* This PR will display all unique proxies in `getnetworkinfo` as suggested in https://github.com/bitcoin/bitcoin/issues/17314#issue-514543978
>List all proxies, at least if they're different from the IPv4 one
**Testing**:
You can verify this change by starting bitcoind with
```shell
./src/bitcoind -signet --proxy=127.0.0.1:9050 --i2psam=127.0.0.1:7656
```
Execute `-getinfo`
```shell
./src/bitcoin-cli -signet -getinfo
```
ACKs for top commit:
laanwj:
Tested ACK 7c3712fa32
prayank23:
utACK 7c3712fa32
Tree-SHA512: 9eae97866220227f30ca4585f52799fa66fc1135047d869c4aabe598aee1a9414cb9e1c4a8d19165e52d65005f3c6d4bcc37463ace0ddb44389dfbcd4ca74095
This avoids intermittent issues in the CI Task when a test passes
successfully. For example:
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\ContainerAdministrator\\AppData\\Local\\Temp\\test_runner_₿_🏃_20210920_072037\\feature_versionbits_warning_89\\alert.txt'
ebe49b5b7c test: fix confusing off-by-one nValue in feature_coinstatsindex.py (Sebastian Falbesoner)
Pull request description:
Due to evil floating-point arithmetic, the creation of one of the transaction outputs in feature_coinstatsindex.py leads to it's nValue being off by one satoshi: the Python expression `int(21.99 * COIN)` doesn't yield 2199000000 as expected, but 2198999999.
This makes the test more confusing than necessary (w.r.t. the expected `gettxoutsetinfo` values), and could also cause problems if the value is ever changed. Fix by using a `Decimal` type for specifying the value in BTC, rather than using a bare floating-point.
ACKs for top commit:
MarcoFalke:
cr ACK ebe49b5b7c
Tree-SHA512: c74c51dbf99818f3d1c881873e0c053a649e4fed9b36767ff971dd3a48bff7122afea4e07cc9925236570368b45579f63e443701f2aaef838a0fafdbe986dfd4
f58f697c98 doc: remove WSL install instructions and point to upstream (fanquake)
Pull request description:
There's not really any need for us to have to replicate (ever-changing) instructions for installing an operating system in our build documentation.
ACKs for top commit:
laanwj:
ACK f58f697c98
hebasto:
ACK f58f697c98
Tree-SHA512: 3ca90cf7696909503ca500756c718f019c410b1e24c139e7e9fdc8726d1c37a7b6c869fdac1cb7ab8c8065bc49c808778ca5985f54d4a698c162866d00397d48
Due to evil floating-point arithmetic, the creation of one of the
transaction outputs in feature_coinstatsindex.py leads to it's nValue
being off by one satoshi: the Python expression `int(21.99 * COIN)`
doesn't yield 2199000000 as expected, but 2198999999.
This makes the test more confusing than necessary (w.r.t. the expected
`gettxoutsetinfo` values), and could also cause problems if the value
is ever changed. Fix by using a `Decimal` type for specifying the
value in BTC, rather than using a bare floating-point.
357f0c7233 ci: Enable more functional tests on Windows MSVC task (Hennadii Stepanov)
f55932678f qa: Fix "RuntimeError: Event loop is closed" on Windows (Hennadii Stepanov)
Pull request description:
On master (2161a05855), running functional tests that use the P2P interface ends with an error:
```
RuntimeError: Event loop is closed
```
This PR fixes this bug, and enables more functional tests on Windows MSVC CI task.
More details about bugfix:
- [What’s New In Python 3.7](https://docs.python.org/3/whatsnew/3.7.html#asyncio)
- https://bugs.python.org/issue33792
- actual [change](https://docs.python.org/3.8/library/asyncio-policy.html#asyncio.WindowsSelectorEventLoopPolicy) done in Python 3.8
Excluded tests, that are listed in the `EXCLUDE_TESTS` environment variable, need more thorough investigation to be enabled.
ACKs for top commit:
MarcoFalke:
review ACK 357f0c7233🌆
Tree-SHA512: d0ba85be81d55c934959ce7402a9c726598125e9751a1de179d16759d0e8b8a915de879c3a62c12d3564c5e0d9649ebd86963744449626efaa42d9eaa99ad3d0
330d3aa1a2 refactor: net: avoid duplicate map lookups to `mapLocalHost` (Sebastian Falbesoner)
Pull request description:
This simple refactoring PR aims to avoid duplicate lookups to `mapLocalHost`: instead of calling `count()` (to first find out whether a key is in the map) and then `operator[]` (to get the value to the passed key, or default-construct one if not found), use either
* `find()` and dereference the returned iterator (for simple lookups), see https://www.cplusplus.com/reference/map/map/find/
* `emplace()` and use the returned <iterator, inserted> pair (for lookups where a new element should be inserted if the key isn't found), see https://www.cplusplus.com/reference/map/map/emplace/
ACKs for top commit:
naumenkogs:
ACK 330d3aa1a2
jonatack:
Code review ACK 330d3aa1a2 plus rebase to master + debug build
Tree-SHA512: d13da6a927ff561eee8ac6b093bf3586dfe31d6c94173a5a6d8f3698e0ee224fb394d3635155d5141c165da59d2c2c37260122eb4f2e8bcda3e8a29b901d213e
* Bump to debian:bookworm to avoid crash in the zmq functional test
(bitcoind: line 2: 33011 Illegal instruction (core dumped)
qemu-s390x)
* Remove RUN_UNIT_TESTS=true, because it is the default
* Add TEST_RUNNER_EXTRA --exclude to skip failing tests
12313382e6 doc: test: unittest segfault gdb (James O'Beirne)
Pull request description:
Quick note on how to get core dumps out of the unittests.
ACKs for top commit:
theStack:
ACK 12313382e6
Tree-SHA512: d749d9117f96af85f9053884c57df766ac1d29e57b2555d4fc63bd9dc29df47487954cee1c7cd78ee420ae1c9c7da7ddc9797b6c636ce7641eae20622eaa3fee
98cf19ca32 wallet: refactor: avoid duplicate lookup on `mapValue["timesmart"]` (Sebastian Falbesoner)
973d8ba93d wallet: refactor: inline function WriteOrderPos() (Sebastian Falbesoner)
65ed198295 wallet: refactor: inline function ReadOrderPos() (Sebastian Falbesoner)
Pull request description:
The functions `ReadOrderPos` and `WriteOrderPos` have been introduced in commit 9c7722b7c5 in 2012. Since accounts have been removed in #13825 (commit c9c32e6b84), they are only called at one place in `CWalletTx::{Serialize,Unserialize}` and thus can be directly inlined instead. Additionally, this PR aims to avoids duplicate lookups on the map `mapValue` (affects keys "n" and "timesmart").
ACKs for top commit:
laanwj:
Code review ACK 98cf19ca32
achow101:
Code Review ACK 98cf19ca32
Tree-SHA512: 8af63c174c79e589bd713f04e8e40caba9f93ec2978c805427cac50d48049808a8c23ff5eea9ef589c9bd79fc66087f43ff5ab28e3cda51dd03f37c0164e2e4c
5984084610 Specifies how to set the value of TORGROUP (lsilva01)
Pull request description:
This change just makes it more explicit how to assign the value to the TORGROUP variable.
ACKs for top commit:
laanwj:
ACK 5984084610
Zero-1729:
Concept ACK 5984084610
Tree-SHA512: af5cc0f87fa309201b5937a2741dea9374eafc09e84664ca138669c1827ce44fe6d25e3853d53ed2c838321aa4b28c6fd9d8dbe23f7194fdd6559d49453416e4
3ec633ef1a build: improve check for ::(w)system (fanquake)
Pull request description:
`AC_DEFINE()` takes `HAVE_STD__SYSTEM || HAVE_WSYSTEM` literally, meaning you
end up with the following in bitcoin-config.h:
```cpp
/* std::system or ::wsystem */
#define HAVE_SYSTEM HAVE_STD__SYSTEM || HAVE_WSYSTEM
```
This works for the preprocessor, because `HAVE_SYSTEM`, is defined, just unusually. Remove this in favor of setting `have_any_system` in either case, given we don't actually use `HAVE_STD__SYSTEM` or `HAVE_WSYSTEM`, and defining `HAVE_SYSTEM` to 1 thereafter.
ACKs for top commit:
laanwj:
Code review ACK 3ec633ef1a
Tree-SHA512: 02c39ba3179136ec1dc28df026b7fa5d732914c85622298ba7ec880f1ae9324208d322a47be451a5c2ff2e165ad1d446bae92e7018db8e517e7ac38fca25a0a3
fa20f815a9 Remove txindex migration code (MarcoFalke)
fae8786033 doc: Fix validation typo (MarcoFalke)
fab89006d6 Add missing includes and forward declarations, remove unused ones (MarcoFalke)
Pull request description:
No supported version of Bitcoin Core used the legacy txindex, so all relevant nodes can be assumed to have upgraded. Thus, there is no need to keep this code any longer.
As a temporary courtesy, provide a one-time warning on how to free the disk space used by the legacy txindex.
Fixes#22615
ACKs for top commit:
laanwj:
Code review ACK fa20f815a9
hebasto:
ACK fa20f815a9, tested on Linux Mint 20.2 (x86_64).
Zero-1729:
crACK fa20f815a9
theStack:
Approach ACK fa20f815a9
Tree-SHA512: 68aa32d064d1e3932e6e382816a4b5de417bd7e82861fea1ee50660e8c397f4efeb88ae4ed54a8ad1952c3563eb0b8449d7ccf883c353cc4d4dc7e15c53d78e8
49d503aefa doc: update -addrinfo in release-notes.md and tor.md (Jon Atack)
75ea9ecf11 cli -addrinfo: drop torv2, torv3 becomes onion per GetNetworkName() (Jon Atack)
Pull request description:
#22050 removed torv2 support from 22.0. For 23.0 and subsequent releases, we can probably remove torv2 from -addrinfo.
before
```
"addresses_known": {
"ipv4": 58305,
"ipv6": 5138,
"torv2": 0,
"torv3": 5441,
"i2p": 14,
"total": 68898
}
```
after
```
"addresses_known": {
"ipv4": 58305,
"ipv6": 5138,
"onion": 5441,
"i2p": 14,
"total": 68898
}
```
Per the naming of `netbase.{h, cpp}::GetNetworkName()`, torv3 becomes onion, which is what is printed in the output of getpeerinfo, getnetworkinfo and getnodeaddresses.
ACKs for top commit:
practicalswift:
cr ACK 49d503aefa
Zero-1729:
tACK 49d503aefa🧉
klementtan:
Code review and tested ACK 49d503aefa
Tree-SHA512: bca52520d8b12c26f1c329d661b9e22c567954ed2af7d2a16d7669eae1a221eada20944f8b2f4e78e31a7190d5f3d3fbfd37509e5edf2d9a3747a0a8f4e375bb
350e034e64 consensus: don't call GetBlockPos in ReadBlockFromDisk without lock (Jon Atack)
Pull request description:
Commit ccd8ef65 "Reduce cs_main lock in ReadBlockFromDisk, only read GetBlockPos under the lock" in #11281 moved the cs_main lock from caller to `ReadBlockFromDisk()` for calling `CBlockIndex::GetBlockPos()`, but the second invocation doesn't have the lock, and IIUC there is no guarantee the compiler can know if state has changed.
Use the `blockPos` local variable instead, rename it to `block_pos`, and make it const.
ACKs for top commit:
laanwj:
Code review ACK 350e034e64
theStack:
Code-review ACK 350e034e64
promag:
Code review ACK 350e034e64.
Tree-SHA512: 0df0614ab1876885c85f7b53c604a759a29008da8027e95503b4726d2b820ec6d27546020c613337ff954406e01cb5d191978ba4a12124052fed6e1b0e9a226f
fa66a7d732 p2p: Rename fBlocksOnly, Add test (MarcoFalke)
fac66d0a39 test: Simplify p2p_blocksonly test with new miniwallet rescan_utxos method (MarcoFalke)
Pull request description:
`fBlocksOnly` has several issues:
* The name is confusing
* It is untested
Fix both.
ACKs for top commit:
laanwj:
Code review ACK fa66a7d732
Tree-SHA512: 4218f455eeb37297f74603d7d44895288605844ae828a40dfb7a70215f1a058ac5ad945a22732f5ebcad3ad375d54ba360bea69ea79639a30d4c88b042448f0f
fad4f44645 test: Set peertimeout in write_config (MarcoFalke)
Pull request description:
This avoids having to remember to set it whenever mocktime is used with
peer connections. Also, it might help avoiding disconnects when
attaching a debugger to a running test.
ACKs for top commit:
laanwj:
Concept and code review ACK fad4f44645
Tree-SHA512: 00c742571c0524c1b3f55e0217433ef7aa2dccccc12650caab98b4cf9231669f37fc589c7475f28d5725ffe2436c76205920eaece4a47fd27dc8872421a48e5c
5008dd87b2 doc: Remove stale comment for CPrivKey (Calvin Kim)
Pull request description:
Removes stale doc about `secure_allocator` being defined in `allocators.h`.
ACKs for top commit:
laanwj:
ACK 5008dd87b2
theStack:
Code-review ACK 5008dd87b2
Tree-SHA512: eb65aff6db5b27d0db2b86f1d1dc6e066daccdaf00f7f9f95b5bee507167fcea2601316cdbd70da4ba32f1fab1e28e440a7e3cabd7b1a72c07dd20b1367361f0
