[agocharbhatia]

Summary

With stream_response_to, a connection that drops while reading the result body raises a raw ClientPayloadError and skips the existing polling retries. Catch it at the response-read boundary so the SDK retries the GET without submitting the conversion again.

result body disconnects
  preserve HTTP status and Retry-After when present
  apply the existing GET retry policy

Evidence

• Before: the local HTTP regression stops after one POST and one GET when the result body is cut short.
  After: one POST and two GETs produce the complete output.
• The same final tests give six failures and four passes on the unchanged base; all ten pass with the patch. They cover truncated error bodies, the existing ten-attempt limit, cancellation, signed downloads and output-file cleanup.
• Full SDK suite: 167 passed on Python 3.13. Ruff check and format checks pass.

This covers aiohttp.ClientError during body reads. It does not change timeout handling.

Merge Danger

Door: Two-way.

Blast Radius: Streamed polling.

Known error statuses retain their existing retry classification. Submission retries and public APIs are unchanged.