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net/http: Flush in TimeoutHandler for Go1.13 is broken and might need a revert [1.13 backport] #34560

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gopherbot opened this issue Sep 26, 2019 · 4 comments
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net/http: Flush in TimeoutHandler for Go1.13 is broken and might need a revert [1.13 backport] #34560

gopherbot opened this issue Sep 26, 2019 · 4 comments
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CherryPickApproved FrozenDueToAge
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Go1.13.3

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@gopherbot
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@gopherbot gopherbot commented Sep 26, 2019

@bcmills requested issue #34439 to be considered for backport to the next 1.13 minor release.

@gopherbot, please backport to Go 1.13: we should minimize the window during which the erroneous method is present.
@gopherbot gopherbot mentioned this issue Sep 26, 2019
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@gopherbot gopherbot added this to the Go1.13.2 milestone Sep 26, 2019
@bcmills
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@bcmills bcmills commented Sep 26, 2019

In #34439 (comment), @pam4 notes:

timeoutWriter is unexported, so no compile-time incompatibility, and although the method exists, the interface was never actually implemented. Go 1.13 docs made a false/impossible claim and I think we should just take it back. […] any program using the method is already broken

In #34439 (comment), @bradfitz replies:

I'm fine reverting the Flusher stuff, though. That's easier than making it work properly.
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@bcmills bcmills commented Sep 26, 2019

Based on the above, approving for Go 1.13.2.
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@gopherbot gopherbot commented Sep 26, 2019

Change https://golang.org/cl/197543 mentions this issue: [release-branch.go1.13] net/http, doc/go1.13.html: revert TimeoutHandler.Flush
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@gopherbot gopherbot commented Sep 27, 2019

Closed by merging de96471 to release-branch.go1.13.
@gopherbot gopherbot closed this Sep 27, 2019
gopherbot pushed a commit that referenced this issue Sep 27, 2019
@odeke-em @bradfitz
[release-branch.go1.13] net/http, doc/go1.13.html: revert TimeoutHand…
de96471 
…ler.Flush

Also added a test to ensure that any interactions
between TimeoutHandler and Flusher result in the
correct status code and body, but also that we don't
get superfluous logs from stray writes as was seen
in the bug report.

Fixes #34560.

Change-Id: I4af62db256742326f9353f98a2fcb5f71d2a5fd9
Reviewed-on: https://go-review.googlesource.com/c/go/+/197659
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
(cherry picked from commit 4faf8a8)
Reviewed-on: https://go-review.googlesource.com/c/go/+/197543
@katiehockman katiehockman modified the milestones: Go1.13.2, Go1.13.3 Oct 17, 2019
@golang golang locked and limited conversation to collaborators Oct 16, 2020
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