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net: TCPListener.SetDeadline doesn't work on Windows #4296

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gopherbot opened this issue Oct 28, 2012 · 6 comments
Closed

net: TCPListener.SetDeadline doesn't work on Windows #4296

gopherbot opened this issue Oct 28, 2012 · 6 comments
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Go1.1

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@gopherbot
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by liamzebedee:

What steps will reproduce the problem?
If possible, include a link to a program on play.golang.org.
1. Create a TCP listener
2. Set the listener's deadline to sometime in the future e.g. time.Now().Add(2 *
time.Second)
3. Try to Accept a connection

Sample program - https://gist.github.com/3967375

What is the expected output?
The program should exit after 2 seconds or so.

What do you see instead?
The program blocks and doesn't exit.

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g

Which operating system are you using?
Windows 7 x64

Which version are you using?  (run 'go version')
1.0.3

Please provide any additional information below.
Original thread here -
https://groups.google.com/forum/?fromgroups=#!topic/golang-nuts/TVO13oA0Fvc
@snaury
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snaury commented Oct 28, 2012

Comment 1:

It seems to me that the fix is simple, in src/pkg/net/fd_windows.go look for
iosrv.ExecIO in accept and change second parameter from 0 to fd.rdeadline. Then after
deadline it would return:
AcceptEx tcp 127.0.0.1:31432: resource temporarily unavailable
And this is what's strange, because it should probably return some form of timeout?

@snaury
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snaury commented Oct 28, 2012

Comment 2:

Ah, no, it's same as with other calls, so it seems to work as expected.

@snaury
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snaury commented Oct 28, 2012

Comment 3:

Submitted CL at https://golang.org/cl/6815044

@davecheney
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Comment 4:

Status changed to Started.

@alexbrainman
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Comment 5:

snaury,
I agree with you, the "resource temporarily unavailable" is misleading. I am planning to
change it once https://golang.org/cl/6604072/ is submitted.
Alex

@alexbrainman
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Comment 6:

This issue was closed by revision d12a7d3.

Status changed to Fixed.

@rsc rsc added this to the Go1.1 milestone Apr 14, 2015
@rsc rsc removed the go1.1 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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@davecheney @snaury @rsc @gopherbot @alexbrainman