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Dash - Reinventing Cryptocurrency
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Merge #6067: backport: merge bitcoin#21148, #21327, #23970, #24021, #24543, #26844, #25325, #28165, partial bitcoin#20524, #26036, #27981 (networking backports: part 7) 
76a458e5f9 fmt: apply formatting suggestions from `clang-format-diff.py` (Kittywhiskers Van Gogh)
63962ec475 merge bitcoin#28165: transport abstraction (Kittywhiskers Van Gogh)
c6b9186e69 merge bitcoin#25325: Add pool based memory resource (Kittywhiskers Van Gogh)
8c986d6b08 partial bitcoin#27981: Fix potential network stalling bug (Kittywhiskers Van Gogh)
13f6dc1b27 merge bitcoin#26844: Pass MSG_MORE flag when sending non-final network messages (Kittywhiskers Van Gogh)
caaa0fda01 net: use `std::deque` for `vSendMsg` instead of `std::list` (Kittywhiskers Van Gogh)
2ecba6ba5f partial bitcoin#26036: add NetEventsInterface::g_msgproc_mutex (Kittywhiskers Van Gogh)
f6c943922f merge bitcoin#24543: Move remaining globals into PeerManagerImpl (Kittywhiskers Van Gogh)
dbe41ea141 refactor: move object request logic to `PeerManagerImpl` (Kittywhiskers Van Gogh)
112c4e0a16 merge bitcoin#24021: Rename and move PoissonNextSend functions (Kittywhiskers Van Gogh)
6d690ede82 merge bitcoin#23970: Remove pointless and confusing shift in RelayAddress (Kittywhiskers Van Gogh)
87205f26b5 merge bitcoin#21327: ignore transactions while in IBD (Kittywhiskers Van Gogh)
51ad8e4dde merge bitcoin#21148: Split orphan handling from net_processing into txorphanage (Kittywhiskers Van Gogh)
cbff29a630 partial bitcoin#20524: Move MIN_VERSION_SUPPORTED to p2p.py (Kittywhiskers Van Gogh)

Pull request description:

  ## Additional Information

  * Dependent on https://github.com/dashpay/dash/pull/6098

  * Dependent on https://github.com/dashpay/dash/pull/6233

  * `p2p_ibd_txrelay.py` was first introduced in [bitcoin#19423](https://github.com/bitcoin/bitcoin/pull/19423) to test feefilter logic but on account of Dash not having feefilter capabilities, that backport was skipped over but on account of the tests introduced in [bitcoin#21327](https://github.com/bitcoin/bitcoin/pull/21327) that test capabilities present in Dash, a minimal version of `p2p_ibd_txrelay.py` has been committed in.

  * `vSendMsg` is originally a `std::deque` and as an optimization, was changed to a `std::list` in 027a852a ([dash#3398](https://github.com/dashpay/dash/pull/3398)) but this renders us unable to backport [bitcoin#26844](https://github.com/bitcoin/bitcoin/pull/26844) as it introduces build failures. The optimization has been reverted to make way for the backport.

    <details>

    <summary>Compile failure:</summary>

    ```
    net.cpp:959:20: error: invalid operands to binary expression ('iterator' (aka '_List_iterator<std::vector<unsigned char, std::allocator<unsigned char>>>') and 'int')
                if (it + 1 != node.vSendMsg.end()) {
                    ~~ ^ ~
    /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_bvector.h:303:3: note: candidate function not viable: no known conversion from 'iterator' (aka '_List_iterator<std::vector<unsigned char, std::allocator<unsigned char>>>') to 'ptrdiff_t' (aka 'long') for 1st argument
      operator+(ptrdiff_t __n, const _Bit_iterator& __x)
    [...]
    1 error generated.
    make[2]: *** [Makefile:11296: libbitcoin_server_a-net.o] Error 1
    make[2]: *** Waiting for unfinished jobs....
    make[2]: Leaving directory '/src/dash/src'
    make[1]: *** [Makefile:19171: all-recursive] Error 1
    make[1]: Leaving directory '/src/dash/src'
    make: *** [Makefile:799: all-recursive] Error 1
    ```

    </details>

  * The collection of `CNode` pointers in `CConnman::SocketHandlerConnected` has been changed to a `std::set` to allow for us to erase elements from `vReceivableNodes` if the node is _also_ in the set of sendable nodes and the send hasn't entirely succeeded to avoid a deadlock (i.e. backport [bitcoin#27981](https://github.com/bitcoin/bitcoin/pull/27981))

  * When backporting [bitcoin#28165](https://github.com/bitcoin/bitcoin/pull/28165), `denialofservice_tests` has been modified to still check with `vSendMsg` instead of `Transport::GetBytesToSend()` as changes in networking code to support LT-SEMs (level-triggered socket events mode) mean that the message doesn't get shifted from `vSendMsg` to `m_message_to_send`, as the test expects.
    * Specifically, the changes made for LT-SEM support result in the function responsible for making that shift (`Transport::SetMessageToSend()` through `CConnman::SocketSendData()`), not being called during the test runtime.

  * As checking `vSendMsg` (directly or through `nSendMsgSize`) isn't enough to determine if the queue is empty, we now also check with `to_send` from `Transport::GetBytesToSend()` to help us make that determination. This mirrors the change present in the upstream backport ([source](https://github.com/bitcoin/bitcoin/pull/28165/files#diff-00021eed586a482abdb09d6cdada1d90115abe988a91421851960e26658bed02R1324-R1327)).

  ## Breaking Changes

  * `bandwidth.message.*.bytesSent` will no longer include overhead and will now only report message size as specifics that let us calculate the overhead have been abstracted away.

  ## Checklist:

  - [x] I have performed a self-review of my own code
  - [x] I have commented my code, particularly in hard-to-understand areas **(note: N/A)**
  - [x] I have added or updated relevant unit/integration/functional/e2e tests
  - [x] I have made corresponding changes to the documentation **(note: N/A)**
  - [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_

ACKs for top commit:
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    utACK 76a458e5f9

Tree-SHA512: 2e47c207c1f854cfbd5b28c07dd78e12765ddb919abcd7710325df5d253cd0ba4bc30aa21545d88519e8acfe65638a57db4ca66853aca82fc355542210f4b394
2024-09-04 12:11:22 -05:00
.github fix: resolve GitHub workflow warnings 2024-08-24 01:15:31 +03:00
.tx fix: follow-up #5393 - should be used [dash.dash_ents] (#5472) 2023-07-01 14:16:50 +03:00
build-aux/m4 merge bitcoin#25465: remove boost library detection 2024-08-13 22:53:49 +07:00
ci merge bitcoin#24301: header-only Boost 2024-08-13 22:53:48 +07:00
contrib merge bitcoin#19572: Create "sequence" notifier, enabling client-side mempool tracking 2024-08-26 15:35:12 +00:00
depends merge bitcoin#30217: Update Boost download link 2024-08-13 22:53:52 +07:00
doc merge bitcoin#23471: Improve ZMQ documentation 2024-08-26 15:35:13 +00:00
share Merge #6111: backport: bitcoin-core/gui#154, #176, #221, #248, #251 - qt improvements and related fixes 2024-07-23 14:17:33 -05:00
src fmt: apply formatting suggestions from clang-format-diff.py 2024-09-04 16:29:30 +00:00
test merge bitcoin#23970: Remove pointless and confusing shift in RelayAddress 2024-09-04 16:29:29 +00:00
.cirrus.yml Merge bitcoin/bitcoin#21931: ci: Bump cirrus fuzz CPUs to avoid timeout 2024-08-12 20:38:04 +07:00
.dockerignore build: add dash minimal development environment container 2021-12-21 12:43:37 +05:30
.editorconfig Merge #21123: code style: Add EditorConfig file 2021-07-16 10:04:09 -05:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore merge bitcoin#21336: Make .gitignore ignore src/test/fuzz/fuzz.exe 2024-02-06 08:39:51 -06:00
.gitlab-ci.yml fix: missing changes from bitcoin#19267 - run multiprocess on CI 2024-07-24 20:06:12 +07:00
.python-version partial bitcoin#27483: Bump python minimum version to 3.8 2023-05-11 09:18:48 -05:00
.style.yapf Merge #15533: test: .style.yapf: Set column_limit=160 2021-07-10 12:10:51 -05:00
autogen.sh Merge #17829: scripted-diff: Bump copyright of files changed in 2019 2023-12-06 11:40:14 -06:00
CMakeLists.txt chore: Added missing sources files in CMake (#5503) 2023-07-25 12:23:56 -05:00
configure.ac chore: bump version on develop to 21.2 2024-08-29 10:50:30 -05:00
CONTRIBUTING.md doc: replace gfd() function to recommendation to use git diff-range 2024-04-23 11:26:00 -05:00
COPYING docs: update license year range to 2024 (#5890) 2024-02-22 20:56:43 -06:00
INSTALL.md Dashify INSTALL.md and build-unix.md 2018-01-12 16:12:54 +01:00
libdashconsensus.pc.in revert dash#1432: Rename consensus source library and API 2022-08-09 14:16:28 +05:30
Makefile.am Merge #21012: ci: Fuzz with integer sanitizer 2024-06-20 12:19:21 +07:00
README.md doc: make build steps more prominent 2024-07-18 01:22:42 -06:00
SECURITY.md Merge #6117: docs: update supported versions in SECURITY.md 2024-07-23 12:46:47 -05:00

README.md

Dash Core staging tree

CI master develop
Gitlab Build Status Build Status

https://www.dash.org

For an immediately usable, binary version of the Dash Core software, see https://www.dash.org/downloads/.

Further information about Dash Core is available in ./doc/.

What is Dash?

Dash is an experimental digital currency that enables instant, private payments to anyone, anywhere in the world. Dash uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Dash Core is the name of the open source software which enables the use of this currency.

For more information read the original Dash whitepaper.

License

Dash 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 meant to be stable. Development is normally done in separate branches. Tags are created to indicate new official, stable release versions of Dash Core.

The develop branch is regularly built (see doc/build-*.md for instructions) and tested, but is not guaranteed to be completely stable.

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

Build / Compile from Source

The ./configure, make, and cmake steps, as well as build dependencies, are in ./doc/ as well:

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 Dash 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.