- _get_level_hashes: use separate SQL without prefix64<=? for level 0.
UINT64_MAX cast to sqlite3_int64 becomes -1, making prefix64<=-1 always
false for positive prefixes → bitmap always 0 → sync never exchanges data.
- member_sync_init: add _rebuild_all_trees to scan all peers_* tables and
call merkle_sync_recompute_path for each member. Ensures merkle_tree_hash
has entries for members added before merkle sync existed.
- Add 2-byte dlen prefix to terminal BATCH/HASHES data so receiver knows
exact byte count — fixes rem=0 bug that truncated multi-item BATCHes.
- Fix synthetic HASHES prefix_bytes: use merkle_sync_prefix_bytes(next_lvl)
for both declaration and _prefix_write, not current level's pb_i.
- Fix initiator never getting _session_done: responder sends confirmation
HASHES(is_data=1,level=0) before _session_done so initiator's done_cb fires.
- Add level==0 guard in _member_get_items/_member_update_bucket_hash
to prevent SQL queries with bogus mask on virtual root level.
- _get_level_hashes: remove (0x1F << parent_shift) from range_end so
bitmap only includes children of the actual parent prefix (not all
parents). Add level 0 virtual root that queries all level-1 entries.
- merkle_sync_start: send HASHES at level 0 (virtual root) instead of
level 1/prefix 0. Root-level REQUEST prefix reconstruction now uses
the correct level-1 prefix from DB.
- _handle_batch: use merkle_sync_prefix_bytes(next_lvl) for synthetic
child HASHES instead of current level's pb_i (could be wrong size).
- Remove timeout/retry mechanism: delete _session_timeout_cb,
_session_start_timer, timer/retries fields. ETCP provides reliable
transport — no need for application-layer retries.
_prefix_write was writing the least significant pb bytes of the 64-bit
prefix, but the protocol expects the most significant pb bytes (bits
63..64-pb*8). For pb<=4 these ranges are disjoint → wire always got
zeros. _prefix_read also lacked the final left-shift to align the
result at bit 63.
This caused all level>=2 merkle sync requests/batches to receive
prefix=0 instead of the real prefix, making get_items/update_bucket_hash
find zero members → handle_batch len=7 with no data → sync completed
without actually exchanging member data.
- topo_sqlite_db moved from TOPO_GROUPS to UTUN_INSTANCE (direct access)
- topo_groups_set_sqlite_db() removed
- chatgui: chat_sync_connect_node → chat_core_connect_auto (direct ETCP, no conn_mgr)
- chatgui: chat_core_connect_from_invite saves to SQLite → auto connect (no BGP)
- chatgui: removed _on_node_updated BGP callback from member_sync
- chatgui: removed conn_mgr_get_status from status dump
- chatgui: removed all conn_mgr.h and topo_group.h includes
- chatgui: CONN_MGR_ERR_* constants → CC_* in chat_core.h
- removed unused cc_parallel_* code, conn_state_str/conn_type_str helpers
Replace etcp_router_bind/etcp_route_send/etcp_router_unbind with
direct etcp_bind/etcp_send/etcp_unbind + find-conn-by-node_id helpers.
Same approach as db_sync (0x20). Service IDs unchanged (0x30, 0x31).
- Replace get_time_us() with utun_gettimeofday() for PUSH message timestamps
(db_sync.c, chat_core.c) — monotonic clocks differ across Linux/Windows
- Fix merkle_sync: restart session timer in _handle_request to prevent
double-sided timeout when both nodes start member_sync simultaneously
- Fix INIT_RESP short-format: don't mark synced when my_count > peer_count
- Add db_sync_get_last_timestamp() to avoid duplicate timestamp generation
between db_sync and chat_core on_db_sync_insert
- Fix db_sync_stub to generate timestamps consistently
- build.sh: auto-rebuild chatgui via CMake after utun build
Evgeny