The 8080->8081 fix from the last commit just moved the collision
risk, not removed it — any hardcoded port can eventually collide with
something else on a box running several services. Both services now
scan for the first genuinely free port starting at 8081 (ss -tlnH
"sport = :$PORT", capped at 100 ports checked) and use whatever they
find — .env, UFW, the DO Cloud Firewall rule, and the Caddy proxy
target all follow the actual chosen port, not a fixed number.
asterisk-do.sh's self-contained Caddy block (unquoted heredoc) reads
the port live. asterisk.sh's README heredoc is quoted (no expansion),
so its generated docs keep the static "8081" default with an added
note to check .env for the real value if it differed — the summary
echo outside that heredoc still reports the live value correctly.
Verified: normal case still lands on 8081; with 8081 deliberately
occupied by another process, both services correctly detect the
collision and fall through to 8082 instead, confirmed via the actual
generated .env in each case.
Claude
4af9cfeae3