Three ways the bounds added here failed to do their job:
- get_first_free_port ended the scan cap with 'exit 1', but every caller
runs it in a command substitution, so only the subshell died. The port
variable came back empty, the next $((port + 1)) evaluated to 1, and the
run limped on to a confusing wait_for_readyFile failure. Forcing the cap
on ocsp-stapling.test: before, the script ran on and hung until an outer
timeout killed it; now it exits 1 at the error. Return instead, and check
the status at all 25 call sites across the six scripts.
- The macOS timeout shim was a shell function. Backgrounding a function
forks a subshell, so $! was the subshell and cleanup killed that while
the server it was meant to stop leaked. Use a prefix variable that
expands to nothing when timeout(1) is absent, keeping $! the real pid.
- timeout -s KILL exits 137, not 124. Sites that read $? and treat any
non-zero as 'feature not compiled in' turned a hang into exit 0, so the
bound made a hang less visible than before. Add timed_out() and check it
before those skip branches; use it for the version probes too, which
matched any status >= 124.
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