openfut-observe.sh answers the one question no server log can: when a gate
fails and a service logged nothing, did the client try and fail, or never try?
Both look like silence. Two redirector gates were lost to that ambiguity --
"roster server logged nothing" was equally consistent with a broken roster
service, a wrong roster URL, and a client that never asked.
Built on iptables packet counters because this box has no tcpdump, no
conntrack, and no readable kernel log. That last one is verified rather than
assumed: an initial LOG-based version installed correctly and its rules matched
(counters proved it), but the output went nowhere -- journalctl -k has no
entries and dmesg is empty. Counters are also lower volume and record only SYNs,
so no payload can be captured even in principle.
Validated against the live client, not a loopback stand-in: an initial
self-test using this host's own address counted almost nothing, because
locally-generated packets never traverse PREROUTING. Against the real remote
client it counts 8081 at ~4/min, matching the roster server's own log.
Known gap, recorded rather than hidden: the catch-all TOTAL runs well above the
sum of the named ports, so the client makes steady background attempts to ports
not tracked here. It is present during a working session, so it is not the
failure signature, and it is not chased further here.
verify-build-identity.sh now rejects an argument that is not a commit hash.
Passing the binary path instead of its stamp previously produced a plausible
"REFUSING: binary was built from ./target/release/... but HEAD is <sha>", which
reads as a real stale-build finding rather than a caller mistake -- and a
safeguard that cries wolf is one people learn to route around. Usage error is
now exit 2, distinct from a genuine stale build (1) and success (0).
funman300
5bc39e902d