- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
- utun_update.sh: Shell script for updating single instance
* fast mode: git pull + make clean + make
* full mode: complete rebuild with autotools
* Auto-detects project root from script location
* Handles PID-based process stop/start
* Supports Linux and BSD (nproc/sysctl)
* Returns proper exit codes (0-4)
- mass_update.py: Python script for parallel SSH updates
* Parallel execution via ThreadPoolExecutor
* Configurable via JSON (~/.utun_servers.json)
* Supports custom port/user per server
* Timeout and error handling
* Summary output per server
Tools for remote mass deployment of uTun updates via SSH.
evgeny
Evgeny