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net: Plan 9 setKeepAlivePeriod bug? #11266

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bradfitz opened this issue Jun 18, 2015 · 2 comments
Closed

net: Plan 9 setKeepAlivePeriod bug? #11266

bradfitz opened this issue Jun 18, 2015 · 2 comments
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FrozenDueToAge OS-Plan9
Milestone
Go1.5

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@bradfitz
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Plan 9's network code in src/net/tcpsockopt_plan9.go contains this questionable piece of code writing to the ctl file:

// Set keep alive period.                                                                                                                  
func setKeepAlivePeriod(fd *netFD, d time.Duration) error {
        cmd := "keepalive " + string(int64(d/time.Millisecond))
        _, e := fd.ctl.WriteAt([]byte(cmd), 0)
        return e
}

Is that really the Plan 9 interface? Or should be it strconv.Itoa instead?

Otherwise it's actually writing something like "keepalive Ϩ" if d is 1 * time.Second.
@bradfitz bradfitz added this to the Go1.5Maybe milestone Jun 18, 2015
@0intro
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0intro commented Jul 2, 2015

Yes, this code is incorrect. The period should be the milliseconds as a string.
This is described in the ip(3) manual. Thanks for noticing.

@gopherbot
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CL https://golang.org/cl/11860 mentions this issue.

@0intro 0intro self-assigned this Jul 2, 2015
@0intro 0intro closed this as completed in e6a0c21 Jul 15, 2015
@mikioh mikioh modified the milestones: Go1.5, Go1.5Maybe Jul 16, 2015
@golang golang locked and limited conversation to collaborators Jul 18, 2016
@rsc rsc unassigned 0intro Jun 23, 2022
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@bradfitz @mikioh @0intro @gopherbot