net/http: fix cancelation of requests with a readTrackingBody wrapper

Use the original *Request in the reqCanceler map, not the transient
wrapper created to handle body rewinding.

Change the key of reqCanceler to a struct{*Request}, to make it more
difficult to accidentally use the wrong request as the key.

Fixes #40453.

Change-Id: I4e61ee9ff2c794fb4c920a3a66c9a0458693d757
Reviewed-on: https://go-review.googlesource.com/c/go/+/245357
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2 files changed
tree: 537aa71c84c473878557a8b22d95b79195c99d2e
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
  18. SECURITY.md
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