2 commits

Author	SHA1	Message	Date
DeFiDude	166083aba7	Add bz2 compression for Resource transfer + 3 compression tests ... Vendor libbzip2 (1.0.8, BSD license) for ESP32-compatible bz2 compression/decompression. This matches Python's bz2.compress() and Rust's bzip2 crate for cross-platform Resource transfers. C++ wrapper (Compression/BZ2.h): - bz2_compress() — compress with blockSize100k=9 - bz2_decompress() — decompress with progressive buffer sizing - try_compress() — compress only if smaller than original Resource integration: - OutboundResource::init() now compresses with bz2 if beneficial - InboundResource::assemble() decompresses if compressed flag set - ResourceFlags.compressed bit tracks compression state 3 new tests (test_resource_transfer): - testBz2CompressDecompress — roundtrip verification - testTryCompress — beneficial vs non-beneficial compression - testBz2CrossPlatformFormat — BZh magic bytes match Python/Rust Total: 137 tests, 136 pass (1 pre-existing allocator).	2026-03-24 17:15:42 -06:00
DeFiDude	798512e8f7	Implement Resource transfer: advertisement, map hash, chunking, assembly ... Complete rewrite of Resource.h/cpp with full protocol implementation: ResourceAdvertisement: msgpack map pack/unpack with 11 string keys (t,d,n,h,r,o,i,l,q,f,m) matching Python/Rust wire format. OutboundResource (sender): compress → encrypt → chunk → hashmap → advertise. Splits encrypted blob into SDU-sized parts (263 bytes), computes SHA256(chunk||random_hash)[:4] map hashes, handles receiver requests. InboundResource (receiver): accept advertisement → receive parts by map hash → assemble → decrypt → decompress. Sends initial request, generates proof. Helper functions: get_map_hash(), compute_resource_hash(), compute_expected_proof() — all match Python/Rust implementations. 8 new tests (test_resource_transfer): advertisement roundtrip, map hash, resource hash, proof, flag encoding, nil/non-nil request_id. Legacy Resource class preserved for Link.cpp compatibility.	2026-03-24 16:48:55 -06:00