fix(weixin): add per-chunk retry with backoff for text delivery - #7932
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When sending multi-chunk responses, individual chunks can fail due to transient iLink API errors. Previously a single failure would abort the entire message. Now each chunk is retried with linear backoff before giving up, and the same client_id is reused across retries for server-side deduplication. Configurable via config.yaml (platforms.weixin.extra) or env vars: - send_chunk_delay_seconds (default 0.35s) — pacing between chunks - send_chunk_retries (default 2) — max retry attempts per chunk - send_chunk_retry_delay_seconds (default 1.0s) — base retry delay Replaces the hardcoded 0.3s inter-chunk delay from #7903. Salvaged from PR #7899 by @corazzione. Fixes #7836.
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Summary
When sending multi-chunk Weixin responses, individual chunks can fail due to transient iLink API errors. Previously a single failure aborted the entire message. Now each chunk retries with linear backoff before giving up, and the same
client_idis reused across retries for server-side deduplication.What changed
_send_text_chunk()— new retry wrapper around_send_message()with configurable attempts and backoffsend_chunk_delay_seconds(default 0.35s)send_chunk_delay_seconds,send_chunk_retries(default 2),send_chunk_retry_delay_seconds(default 1.0s)Files changed (+105/-8)
gateway/platforms/weixin.py— config properties,_send_text_chunk()retry wrapper, updatedsend()tests/gateway/test_weixin.py— 2 new tests (TestWeixinChunkDelivery)Test results
20/20 weixin tests pass
Salvaged from PR #7899 by @corazzione. Contributor authorship preserved. Fixes #7836.