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x/net/http2: connection-level flow control not returned if stream errors, causes server hang [1.15 backport] #41387

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gopherbot opened this issue Sep 14, 2020 · 9 comments
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x/net/http2: connection-level flow control not returned if stream errors, causes server hang [1.15 backport] #41387

gopherbot opened this issue Sep 14, 2020 · 9 comments
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CherryPickApproved Used during the release process for point releases FrozenDueToAge
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Go1.15.4

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@gopherbot
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@ianlancetaylor requested issue #40423 to be considered for backport to the next 1.15 minor release.

@gopherbot Please open backport issues.

This problem can reportedly cause an HTTP/2 connection to hang. There doesn't seem to be any reasonable workaround.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Sep 14, 2020
@gopherbot gopherbot mentioned this issue Sep 14, 2020
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@gopherbot gopherbot added this to the Go1.15.3 milestone Sep 14, 2020
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Change https://golang.org/cl/258478 mentions this issue: [release-branch.go1.15] net/http2: send WINDOW_UPDATE on a body's write failure

@gopherbot
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Change https://golang.org/cl/258540 mentions this issue: [release-branch.go1.15] net/http: backport HTTP2 send WINDOW_UPDATE on a body's write failure

@dmitshur
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dmitshur commented Oct 8, 2020

We've considered this in a release meeting. Approving as it is a serious issue without a workaround. This backport applies to both 1.15 (this issue) and 1.14 (#41386).

@dmitshur dmitshur added CherryPickApproved Used during the release process for point releases and removed CherryPickCandidate Used during the release process for point releases labels Oct 8, 2020
@dmitshur dmitshur mentioned this issue Oct 8, 2020
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gopherbot pushed a commit to golang/net that referenced this issue Oct 8, 2020
@fraenkel @dmitshur
[release-branch.go1.15] net/http2: send WINDOW_UPDATE on a body's wri…
a5fa9d4 
…te failure

When the body.Write fails during processData, the connection flow
control must be updated to account for the data received. The connection's
WINDOW_UPDATE should reflect the amount of data that was not successfully
written. The stream is about to be closed, so no update is required.

Updates golang/go#40423.
Fixes golang/go#41387.

Change-Id: I546597cedf3715e6617babcb3b62140bf1857a27
Reviewed-on: https://go-review.googlesource.com/c/net/+/245158
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
(cherry picked from commit 5d4f700)
Reviewed-on: https://go-review.googlesource.com/c/net/+/258478
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
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dmitshur commented Oct 9, 2020

Reopening for updating vendored and bundled copies in the standard library.

@dmitshur dmitshur reopened this Oct 9, 2020
@dmitshur dmitshur reopened this Oct 9, 2020
@gopherbot
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Change https://golang.org/cl/261919 mentions this issue: [release-branch.go1.15] src, net/http: update vendor, h2_bundle.go regeneration

@toothrot toothrot modified the milestones: Go1.15.3, Go1.15.4 Oct 14, 2020
@dmitshur dmitshur mentioned this issue Oct 21, 2020
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@gopherbot
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Change https://golang.org/cl/264058 mentions this issue: [release-branch.go1.15-bundle] net/http2: send WINDOW_UPDATE on a body's write failure

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Change https://golang.org/cl/264217 mentions this issue: [release-branch.go1.15-bundle] icmp, webdav/internal/xml: avoid string(int)

gopherbot pushed a commit to golang/net that referenced this issue Oct 22, 2020
@bradfitz @dmitshur
[release-branch.go1.15-bundle] icmp, webdav/internal/xml: avoid strin…
d64cff4 
…g(int)

Updates golang/go#32479.
For golang/go#41387.

Change-Id: Ife0c3a2f10afb676af5f2110a9681216122c8808
Reviewed-on: https://go-review.googlesource.com/c/net/+/233900
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
(cherry picked from commit a91f071)
Reviewed-on: https://go-review.googlesource.com/c/net/+/264217
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
gopherbot pushed a commit to golang/net that referenced this issue Oct 22, 2020
@fraenkel @dmitshur
[release-branch.go1.15-bundle] net/http2: send WINDOW_UPDATE on a bod…
abf26a1 
…y's write failure

When the body.Write fails during processData, the connection flow
control must be updated to account for the data received. The connection's
WINDOW_UPDATE should reflect the amount of data that was not successfully
written. The stream is about to be closed, so no update is required.

Updates golang/go#40423.
For golang/go#41387.

Change-Id: I546597cedf3715e6617babcb3b62140bf1857a27
Reviewed-on: https://go-review.googlesource.com/c/net/+/245158
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
(cherry picked from commit 5d4f700)
Reviewed-on: https://go-review.googlesource.com/c/net/+/264058
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
gopherbot pushed a commit that referenced this issue Oct 22, 2020
@odeke-em @dmitshur
[release-branch.go1.15] src, net/http: update vendor, regenerate h2_b…
f68af19 
…undle.go

Features CL:

    net/http2: send WINDOW_UPDATE on a body's write failure
    https://golang.org/cl/258478 (updates #41387)

Created by:

go mod edit -replace=golang.org/x/net=golang.org/x/net@release-branch.go1.15-bundle
GOFLAGS='-mod=mod' go generate -run=bundle std
go mod edit -dropreplace=golang.org/x/net
go get -d golang.org/x/net@release-branch.go1.15
go mod tidy
go mod vendor

Updates #40423
Fixes #41387

Change-Id: I052037d6b6ed38b9d9782e19b8ce283875354c92
Reviewed-on: https://go-review.googlesource.com/c/go/+/258540
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
@dmitshur
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Closed by merging f68af19 to release-branch.go1.15.

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