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Tobias GesellchenandClaude Opus 5
b8427b0bbe
On-device installs were only reachable through an SSH tunnel, and the
docs blamed it on the service binding loopback-only. That was wrong.
Some SoundTouch chassis carry a BCO ("SMSC") Wi-Fi/Bluetooth
co-processor, and inbound LAN traffic reaches the main Linux SoC only
for a fixed set of Bose's own service ports, a list that appears to be
compiled into the co-processor firmware. AfterTouch's :8000 was never
part of that design, so connections never arrive at the SoC at all.
Confirmed on an ST20: a port sweep from a LAN client showed Bose's
:82/:8080/:8090/:8091/:8200/:17000 all answering while :8000 failed,
and tcpdump on the speaker's own eth0 recorded zero packets for it.
Ruled out along the way: iptables (empty), nft/ebtables (absent), the
router, Wi-Fi isolation, and the binding itself (0.0.0.0 is correct).
The init script now redirects one of the relayed ports to AfterTouch,
so http://<speaker-ip>:17008 works with no tunnel. 17008 is Bose's
software-update listener, whose cloud no longer exists. Only external
traffic is matched, so anything on the speaker still reaches :8000 as
before. Auto-enabled only where has-bco reports the co-processor, and
configurable via AFTERTOUCH_LAN_PORT (auto/none/port) in
aftertouch.conf. The rule is re-applied on every start and removed on
stop and uninstall, so it needs no watchdog; unlike prior art it is not
pinned to the LAN IP, so it also survives DHCP changes.
Credit for the REDIRECT technique goes to the STR / SoundTouch Reborn
project, which documented and shipped it first.
Also de-hardcodes the service port, which was baked independently into
the daemon args, the readiness poll and status, and makes install.sh
print the speaker's real address instead of a <your-device-ip>
placeholder it never filled in.
Adds a model support matrix, since the repo had no per-model
compatibility record and this behaviour is entirely chassis-dependent.
Only the verified ST20 row is filled in; everything else is marked
unknown rather than inferred.
Verified on hardware: auto-detection, idempotency across restarts,
teardown and restore, persistence across a full reboot, and LAN access
returning the service's health JSON.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>