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Resolve simultaneous node-to-node connects deterministically #8233

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Resolve simultaneous node-to-node connects deterministically #8233

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16f728a
Resolve simultaneous node-to-node connects deterministically
achamayou Aug 28, 2026
3db1410
Add changelog entry for simultaneous connect fix
achamayou Aug 28, 2026
a9fd12b
Include chrono in node connections header
Copilot Sep 1, 2026
a200dc2
Merge branch 'main' into achamayou-ci-failure-forensics
achamayou Sep 1, 2026
9e1f93e
Move connection fix to 7.0.14 changelog
Copilot Sep 1, 2026
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -13,6 +13,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.

- CCF and C++ applications built against it now require C++23. The supported minimum Clang version remains 18.1.2. (#8234)

### Fixed

- Nodes which open node-to-node connections to each other at the same moment now agree on which of the two connections to keep, instead of each discarding the one the other is using. Previously both could be left holding a connection whose far end no longer existed, and if the resulting disconnection was not observed - for example because a network partition dropped it - the two nodes would silently stop exchanging consensus messages, stalling elections until one of them restarted (#8233).

## [7.0.13]

[7.0.13]: https://github.com/microsoft/CCF/releases/tag/ccf-7.0.13
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6 changes: 6 additions & 0 deletions CMakeLists.txt
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Expand Up @@ -708,6 +708,12 @@ if(BUILD_TESTS)
)
target_link_libraries(rpc_connections_test PRIVATE uv)

add_unit_test(
node_connections_test
${CMAKE_CURRENT_SOURCE_DIR}/src/host/test/node_connections.cpp
)
target_link_libraries(node_connections_test PRIVATE uv)

add_unit_test(
raft_test
${CMAKE_CURRENT_SOURCE_DIR}/src/consensus/aft/test/main.cpp
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