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How to parse binary network packets safely with std::span and byte buffers [Part 2]

CmakeCraft
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1y ago · Nov 22, 2024 4:58 PM
#1
Using std::span<const uint8_t> and std::memcpy to deserialize binary packet structs without violating C++ strict aliasing rules.
CmakeCraft · Build Systems Architect
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RingBufferRob
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1y ago · Nov 22, 2024 7:41 PM
#2
Direct pointer casting (reinterpret_cast<Header*>(buffer)) causes Undefined Behavior and compiler optimization miscompiles. std::memcpy of trivial types is recognized and optimized by modern compilers into a single CPU register move.
RingBufferRob · High-Speed IPC
Shared memory circular buffers with atomic sequence barriers acro...
StaticAssertDev
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1y ago · Nov 24, 2024 12:41 AM
#3
Adding bounds checking before slicing spans prevents buffer over-read security vulnerabilities.
StaticAssertDev · Compile-Time Verification
Enforcing struct alignments, sizes, and invariant bounds via stat...