HttpStream: Enable retries during 32KB precheck

HttpStream performs a 32KB precheck transfer during creation to evade captive
portals and slow mirrors.  (Note: This occurs after having established a
connection to a remote server and that server replying with a HTTP 200 or 206.)
For reasons unknown (no code comment), retries were disabled during precheck, so
if our upstream server flaked *even once*, we'd throw a SocketTimeoutException
and no longer consider this mirror.

This commit removes the code which disables/re-enables retries during the
precheck phase.  It also includes some new test cases to confirm that transfers
are adequately retried.

NB: I am not a Java developer. <img src="https://i.kym-cdn.com/entries/icons/original/000/008/342/ihave.jpg" alt="I have no idea what I'm doing."/>

Closes #10294.

Closes #10296.

PiperOrigin-RevId: 309201619
4 files changed
tree: 0172cd437e3984519cf1ada9604386dacf303004
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
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