Tomas/connection raii initial#413

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ProfessorTom wants to merge 130 commits intodannagle:developmentfrom

ProfessorTom:tomas/connection-raii-initial

Commits on Mar 2, 2026

Commits on Mar 5, 2026

Commits on Mar 6, 2026

Commits on Mar 7, 2026

Commits on Mar 16, 2026

TCPThread: propagate constructor host/port to sendPacket.toIP/port
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TCPThread: add early exit checks and better logging in persistentConnectionLoop
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TCPThread: move socket cleanup to persistentConnectionLoop exit
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TCPThread: fix incoming persistent mode to use heap-allocated socket
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TCPThread: make closeConnection flag-based only (no direct socket ops)
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make isManagedByConnection protected so we can modify it in unit test test double
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add setter method for m_managedByConnection to `TestTcpThread` test double
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Connection: enhance close() with better logging and short wait
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Tests: add tcpthreadqapplicationneededtests to build and runner
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Connection: add m_isClosing guard member
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TCPThread: add forceShutdown() to unblock blocking socket waits
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Connection: extract thread shutdown into private shutdownThreadSafely()
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Connection: refactor close() to use shutdownThreadSafely() and add re-entrancy guard
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Connection: refactor destructor to use shutdownThreadSafely() defensively
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moar debug!
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Add TcpThread.run() client-side characterization test
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make sendPacket protected in TcpThread for access in unit tests
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extract `getIPConnectionProtocol()` from `run()`
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add methods to test double
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add unit tests for `getIPConnectionProtocol()`
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use `getIPConnectionProtocol()` in production
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Commits on Mar 17, 2026

update comment to match method being tested
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Commits on Mar 19, 2026

Commits on Apr 4, 2026

Commits on Apr 5, 2026

Commits on Apr 12, 2026

Commits on Apr 13, 2026

Extract cleanupAfterPersistentConnectionLoop() and add unit tests
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Commits on Apr 19, 2026

Add unit test for sendCurrentPacket when no data is present
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