9855422e65
a490d074b3491427afbd677f5fa635b910f8bb34 doc: Add anchors.dat to files.md (Hennadii Stepanov) 0a85e5a7bc8dc6587963e2e37ac1b087a1fc97fe p2p: Try to connect to anchors once (Hennadii Stepanov) 5543c7ab285e90256cbbf9858249e028c9611cda p2p: Fix off-by-one error in fetching address loop (Hennadii Stepanov) 4170b46544231e7cf1d64ac3baa314083be37502 p2p: Integrate DumpAnchors() and ReadAnchors() into CConnman (Hennadii Stepanov) bad16aff490dcf87722fbfe202a869fb24c734e1 p2p: Add CConnman::GetCurrentBlockRelayOnlyConns() (Hennadii Stepanov) c29272a157d09a8125788c1b860e89b63b4cb36c p2p: Add ReadAnchors() (Hennadii Stepanov) 567008d2a0c95bd972f4031f31647c493d1bc2e8 p2p: Add DumpAnchors() (Hennadii Stepanov) Pull request description: This is an implementation of #17326: - all (currently 2) outbound block-relay-only connections (#15759) are dumped to `anchors.dat` file - on restart a node tries to connect to the addresses from `anchors.dat` This PR prevents a type of eclipse attack when an attacker exploits a victim node restart to force it to connect to new, probably adversarial, peers. ACKs for top commit: jnewbery: code review ACK a490d074b3 laanwj: Code review ACK a490d074b3491427afbd677f5fa635b910f8bb34 Tree-SHA512: 0f5098a3882f2814be1aa21de308cd09e6654f4e7054b79f3cfeaf26bc02b814ca271497ed00018d199ee596a8cb9b126acee8b666a29e225b08eb2a49b02ddd
Bitcoin Core integration/staging tree
What is Bitcoin?
Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.
For more information, as well as an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original whitepaper.
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, that are run automatically on the build server.
These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py
The Travis CI system makes 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.
Translators should also subscribe to the mailing list.