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fanquake 51c050787f
Merge bitcoin/bitcoin#27626: Parallel compact block downloads, take 3 
d7f359b35e Add tests for parallel compact block downloads (Greg Sanders)
03423f8bd1 Support up to 3 parallel compact block txn fetchings (Greg Sanders)
13f9b20b4c Only request full blocks from the peer we thought had the block in-flight (Greg Sanders)
cce96182ba Convert mapBlocksInFlight to a multimap (Greg Sanders)
a90595478d Remove nBlocksInFlight (Greg Sanders)
86cff8bf18 alias BlockDownloadMap for mapBlocksInFlight (Greg Sanders)

Pull request description:

  This is an attempt at mitigating https://github.com/bitcoin/bitcoin/issues/25258 , which is a revival of https://github.com/bitcoin/bitcoin/pull/10984, which is a revival of https://github.com/bitcoin/bitcoin/pull/9447.

  This PR attempts to mitigate a single case, where high bandwidth peers can bail us out of a flakey
  peer not completing blocks for us. We allow up to 2 additional getblocktxns requests per unique block.
  This would hopefully allow the chance for an honest high bandwidth peer to hand us the transactions
  even if the first in flight peer stalls out.

  In contrast to previous effort:

  1) it will not help if subsequent peers send block headers only, so only high-bandwidth peers this time. See: https://github.com/bitcoin/bitcoin/pull/10984/files#diff-6875de769e90cec84d2e8a9c1b962cdbcda44d870d42e4215827e599e11e90e3R1411
  2)  `MAX_GETBLOCKTXN_TXN_AFTER_FIRST_IN_FLIGHT` is removed, in favor of aiding recovery during turbulent mempools
  3) We require one of the 3 block fetching slots to be an outbound peer. This can be the original offering peer, or subsequent compact blocks given by high bandwidth peers.

ACKs for top commit:
  sdaftuar:
    ACK d7f359b35e
  mzumsande:
    Code Review ACK d7f359b35e

Tree-SHA512: 54980eac179e30f12a0bd49df147b2c3d63cd8f9401abb23c7baf02f76eeb59f2cfaaa155227990d0d39384de9fa38663f88774e891600a3837ae927f04f0db3
2023-05-24 10:09:09 +01:00
.github github: Switch to yaml issue templates 2023-02-21 11:31:16 +00:00
.tx qt: Bump Transifex slug for 25.x 2023-02-27 14:01:14 +00:00
build-aux/m4 build: Bump minimum supported GCC to g++-9 2023-05-18 12:24:40 +02:00
build_msvc Merge bitcoin/bitcoin#27696: build: Do not define ENABLE_ZMQ when ZMQ is not available 2023-05-22 10:00:15 +01:00
ci Merge bitcoin/bitcoin#27672: fuzz: Print error message when FUZZ is missing 2023-05-22 12:55:18 +01:00
contrib Merge bitcoin/bitcoin#27670: guix: remove redundant glibc patches 2023-05-22 10:49:07 +01:00
depends doc: Rework build-unix.md 2023-05-17 14:31:03 +02:00
doc random: switch to using getrandom() directly 2023-05-20 17:20:01 +01:00
share Modernize rpcauth.py and its tests 2023-02-13 17:11:15 -05:00
src Merge bitcoin/bitcoin#27626: Parallel compact block downloads, take 3 2023-05-24 10:09:09 +01:00
test Merge bitcoin/bitcoin#27626: Parallel compact block downloads, take 3 2023-05-24 10:09:09 +01:00
.cirrus.yml ci: Bump centos:stream8 to centos:stream9 2023-05-18 12:24:38 +02:00
.editorconfig ci: Drop AppVeyor CI integration 2021-09-07 06:12:53 +03:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore refactor: cleanups post unsubtree'ing univalue 2022-06-15 12:56:44 +01:00
.python-version Bump python minimum version to 3.8 2023-04-21 10:18:19 +02:00
.style.yapf test: .style.yapf: Set column_limit=160 2019-03-04 18:28:13 -05:00
autogen.sh build: Use newest config.{guess,sub} available 2023-04-23 11:26:11 +01:00
configure.ac Merge bitcoin/bitcoin#27699: random: drop syscall wrapper usage for getrandom() 2023-05-22 11:34:58 +01:00
CONTRIBUTING.md doc: Explain squashing with merge commits 2022-05-24 08:17:41 +02:00
COPYING doc: Update license year range to 2023 2022-12-24 11:40:16 +01:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am build: package test_bitcoin in Windows installer 2022-08-09 09:13:23 +01:00
README.md doc: Explain Bitcoin Core in README.md 2022-05-10 07:49:09 +02:00
SECURITY.md doc: Add my key to SECURITY.md 2022-08-23 16:57:46 -04:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.