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context: DeadlineExceeded doesn't implement net.Error interface #14238

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abursavich opened this issue Feb 5, 2016 · 5 comments
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context: DeadlineExceeded doesn't implement net.Error interface #14238

abursavich opened this issue Feb 5, 2016 · 5 comments
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@abursavich
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It's a common pattern to test for timeout errors by asserting (a subset of) the net.Error interface and calling the Timeout method.

func isTimeout(err error) bool {
    te, ok := err.(interface{ Timeout() bool })
    return ok && te.Timeout()
}

DeadlineExceeded timeouts should not require a special case.
@bradfitz bradfitz self-assigned this Apr 9, 2016
@bradfitz bradfitz added this to the Go1.7 milestone Apr 9, 2016
@bradfitz bradfitz assigned Sajmani and unassigned bradfitz May 10, 2016
@bradfitz
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@Sajmani, has this ever been discussed?

@davecheney
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This seems like a reasonable request.

On Wed, 11 May 2016, 09:14 Brad Fitzpatrick, notifications@github.com
wrote:

@Sajmani https://github.com/Sajmani, has this ever been discussed?

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#14238 (comment)

@rsc
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rsc commented May 18, 2016

Seems like a good idea to me and worth doing for Go 1.7 since context is new there.

@rsc rsc changed the title x/net/context: DeadlineExceeded doesn't implement net.Error interface context: DeadlineExceeded doesn't implement net.Error interface May 18, 2016
@bradfitz bradfitz assigned bradfitz and unassigned Sajmani May 19, 2016
@gopherbot
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CL https://golang.org/cl/23256 mentions this issue.

@gopherbot
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CL https://golang.org/cl/30370 mentions this issue.

gopherbot pushed a commit that referenced this issue Oct 5, 2016
@rsc
context: make DeadlineExceeded implement net.Error
f69991c 
It already implemented the Timeout method,
but implementing the full net.Error is more convenient.

Fixes #14238 (again).

Change-Id: Ia87f897f0f35bcb49865e2355964049227951ca6
Reviewed-on: https://go-review.googlesource.com/30370
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@golang golang locked and limited conversation to collaborators Oct 5, 2017
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@bradfitz @davecheney @rsc @abursavich @gopherbot @Sajmani