Close response body in JdkHttpSender on unsupported Content-Encoding

[thswlsqls]

Fixes #8960

Description

• JdkHttpSender.toHttpResponse() threw UnsupportedContentEncodingException before try (InputStream rawIs = response.body()), so the BodyHandlers.ofInputStream() body was never closed. Its Javadoc requires reading to EOF or calling close() to release the exchange.
• The throw now sits inside try (InputStream ignored = response.body()). Exception type, message, and non-retryable handling are unchanged.
• OkHttpHttpSender.handleResponse() already does this check inside try (ResponseBody body = ...).
• Closing before EOF may close the connection instead of reusing it. That is intended for a non-conforming response, and OkHttp does the same.
• The check and ofInputStream() both came in Response body bounds #8224. Internal package; no apidiff.

Testing done

• Added JdkHttpSenderTest#sendInternal_unsupportedContentEncoding_closesBody: a mocked Content-Encoding: br response must throw and close the body. With the main-code fix reverted, it fails on the close assertion.
• :exporters:sender:jdk:check: spotless, ErrorProne/NullAway and jApiCmp pass; 14 of 15 tests pass. sendInternal_RetryableConnectTimeoutException also fails on unmodified main here, because my VPN routes 10.255.255.1.

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Waiting on reviewers · refreshed 2026-10-18 13:36 UTC

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.41%. Comparing base (b32298a) to head (2578723).

Files with missing lines	Patch %	Lines
...ry/exporter/sender/jdk/internal/JdkHttpSender.java	50.00%	0 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (50.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8962   +/-   ##
=========================================
  Coverage     90.40%   90.41%           
- Complexity    10898    10900    +2     
=========================================
  Files          1015     1015           
  Lines         29843    29844    +1     
  Branches       3896     3897    +1     
=========================================
+ Hits          26981    26982    +1     
  Misses         1910     1910           
  Partials        952      952           

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