- Split the PPS exchange into the two standard GSMTAP-SIM subtypes:
0x02 (PPS_REQ, raw request bytes, span ss..es_req) and 0x03 (PPS_RSP,
raw response bytes, span es_req..end), replacing the single 0x02 packet
with concatenated request+response that deviated from libosmocore's
gsmtap.h. Wireshark now dissects both halves; simtrace2-pysniff needs
no change (its importer already maps 0x03 to 'pps' and _decode_pps()
parses the 0xFF-leading response frame). PPS annotation/log unchanged.
- gsmtap_stream.py: GSMTAP_SIM_PPS_REQ/RSP constants; header field labels
aligned with libosmocore's struct (signal_dbm/snr_db).
- Docs: GSMTAP event tables (EN/RU) updated, PPS deviation note removed;
corrected the res-byte flag attribution -- upstream simtrace2 never
sets res, so the GSMTAP_FLAG_BAD_FCS carriage is this decoder's own
extension (semantics mirror simtrace2's USB data flags).
- Tests: assert the PPS subtype values; baseline regenerated (only the
version line and test listing differed -- no decode-metric changes).
68/68 unit tests.
Residual CONCAT mis-frames (4gmodem/A55_sim2/S21p_sim2) traced to a silent
5-byte drop at an invalid-INS T=0 header (0x0f 00 a4 08 04). Drop only the
stray leading byte and re-frame the remaining four via _replay so the real
command (00 a4 08 04 02 2f 00 -> 61 1c) is recovered.
- _note_discard()/_consume_first(): every consumed-but-unemitted byte is
now logged; idle 0x00/0xFF discards are rate-limited, real data always
gets an ANN_WARN annotation.
- All read-until-SW loops log skipped non-SW bytes.
- All traces: CONCAT 0; BAD_FCS/GARBAGE 0; test_8/test_7 RESULT OK;
47/47 unit tests; baseline byte-identical.
History rewritten to a single root commit so no example trace is stored
in the repo (fixtures are local-only, gitignored). README keeps only
generic <trace>.sr placeholders; AGENTS.md retains the fixture names.
catarrh