PR #382 introduced an `effective_retries` widening on the first gaierror,
but the widening leaked: every non-DNS error path (HTTPError, non-DNS
URLError, OSError) was gated on `effective_retries - 1` and so inherited
the expanded bound. A caller passing `retries=2` who hit DNS-then-non-DNS
got 3 attempts instead of 2 — contrary to the PR description and the
fail-fast intent of small retry budgets.
Fix:
- Gate every non-DNS sleep/retry decision on the caller's original
`retries`, not the widened `effective_retries`.
- Add an explicit `break` in each non-DNS branch when the original
budget is exhausted, so the (possibly widened) outer loop bound
can't pull us into an extra attempt.
Adds two regression tests covering the DNS-then-non-DNS-URLError and
DNS-then-OSError sequences flagged in Greptile review on PR #382.
Trevin Chow
719cdef2fb