Unifying the credential pool's `_RETRY_DELAY_PATTERNS` into `RETRY_DELAY_PATTERNS`
flipped the pool's precedence: "retry after 30s; resets in 4hr" cooled the
credential for 14400 s where the pool used to take 30. A body carrying both
describes a short throttle inside a long quota window; the explicit retry-after
is the wait the provider actually asks for, so it is tried before "resets in".
Review follow-up on #109539.
Three answers to "is this host in NO_PROXY": process_bootstrap used the stdlib
proxy_bypass_environment (no CIDR, no `*.`), gateway/platforms/base.py had a
full matcher (should_bypass_proxy) and a second suffix-only one
(is_host_excluded_by_no_proxy, used by Slack). Live-verified: with
NO_PROXY=10.0.0.0/8 Telegram bypassed the proxy while the LLM call to a 10.x
endpoint went through it.
The full matcher moves to the leaf module agent/proxy_bypass.py (stdlib only,
importable at early boot); both base.py functions are one-line forwarders and
process_bootstrap._get_proxy_for_base_url uses it (passing host:port so
port-qualified entries match). The six-key proxy env scan is also shared.
Seven sites hand-rolled `float(headers.get("Retry-After"))` (anon_auth,
shared_metrics_sender, gemini_native_adapter, extract_api_error_context,
nous_rate_guard, skills_hub_github, skills_hub_clawhub x2) and silently
dropped RFC 7231 HTTP-date values that the conversation loop already honours
via agent/retry_utils.py::parse_retry_after_seconds. They now call it; per-site
caps/floors stay at the call site.
The free-text "resets in / quotaResetDelay / retry after N s" regexes lived in
two tables (agent_runtime_helpers vs credential_pool) whose "resets in"
grammars diverged: the pool accepted only integer `Nhr Nmin` while the error
context accepted h/hr/hours + m/min/minutes + s/seconds with decimals. One table
(agent/retry_utils.py::RETRY_DELAY_PATTERNS / reset_delay_from_message) using
the wider grammar, so a pooled credential's cooldown and the UI's reset time
now agree.
Drop dead read_error_body_or_default / LAYER_RUNTIME; inline single-use
_build_default_credential/_safe_close; compact incident narratives to their
invariants in the guards. Byte-cap and deadline semantics of
read_streaming_error_body verified identical.
Follow-up on the salvage of #59523. Two low-risk cleanups surfaced by review:
- Extract _ZAI_CODING_OVERLOAD_SHORT_ATTEMPTS as a module constant so
adaptive_rate_limit_backoff() and zai_coding_overload_retry_ceiling()
share one source of truth. Previously both hardcoded short_attempts=3
independently; tuning one without the other would silently desync the
retry ceiling from the backoff schedule.
- Replace the tautological formula-mirroring assert in
test_zai_overload_retry_ceiling_exceeds_short_attempts with a behavior
invariant (ceiling leaves headroom for every long-backoff entry), per the
repo's contracts-over-snapshots testing rule.
Z.AI Coding Plan GLM-5.2 reports server overload as HTTP 429 code 1305
("temporarily overloaded"). classify_api_error routes that to
FailoverReason.overloaded (so a valid credential pool isn't burned), but
the adaptive Z.AI backoff was gated on is_rate_limited — which excludes
overloaded — so it never ran (policy=default) and the request failed after
a few quick short retries.
Two compounding causes, both fixed here:
1. Detect the Z.AI overload 429 directly and let its adaptive backoff run
on the overloaded path, not only the rate_limit path.
2. Raise the retry ceiling for this narrow case via
zai_coding_overload_retry_ceiling(). The long-backoff tier
(30/60/90/120s) starts after short_attempts (3) retries, but the default
api_max_retries is also 3, so the loop always gave up before the long
tier could run — leaving the whole long-backoff schedule as dead code.
Scope is limited to the existing narrow is_zai_coding_overload_error match,
so other providers' 429/503/529 handling is unchanged.
teknium1