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-rw-r--r--docs/specs/2026-09-09-contacts.md15
1 files changed, 10 insertions, 5 deletions
diff --git a/docs/specs/2026-09-09-contacts.md b/docs/specs/2026-09-09-contacts.md
index faeef58..c751bcb 100644
--- a/docs/specs/2026-09-09-contacts.md
+++ b/docs/specs/2026-09-09-contacts.md
@@ -148,9 +148,14 @@ successful query plus a few cheap misses.
### Transport
-`urllib.request` from the standard library. `requirements.txt` stays empty.
-
-- `Accept: application/rdap+json`
+`urllib.request` from the standard library. The tool still declares no
+dependencies, and there is no `requirements.txt` in the repository to add one
+to.
+
+- `Accept: application/rdap+json, application/json;q=0.9`. The weaker
+ alternative is offered because some registries serve plain
+ `application/json`, and a strict header would lose a contact that was
+ published.
- **timeout mandatory**, 10 seconds. `urllib` with no timeout blocks forever,
and a hung registry would hang a review.
- **redirects capped at 5 hops.** RIRs redirect to each other and the default
@@ -165,8 +170,8 @@ directing our next move.
so packaging was not the deciding factor. It simply buys little here: the two
things this module needs beyond a plain GET are the redirect cap and the
downgrade refusal, and neither is a knob on `requests` either, both needing a
-`Session` plus custom wiring of comparable size. An empty `requirements.txt`
-means the tool runs and tests with no venv step at all.
+`Session` plus custom wiring of comparable size. Declaring no dependencies at
+all means the tool runs and tests with no venv step.
### Caching policy