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net: net.FileConn(os.Stdin) fails #51230

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masp opened this issue Feb 16, 2022 · 1 comment
Closed

net: net.FileConn(os.Stdin) fails #51230

masp opened this issue Feb 16, 2022 · 1 comment
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@masp
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masp commented Feb 16, 2022

What version of Go are you using (go version)?

> go version
go version go1.17.7 linux/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/xxx/.cache/go-build"
GOENV="/home/xxx/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/xxx/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/xxx/go"
GOPRIVATE=""
GOPROXY="direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17.7"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3050204946=/tmp/go-build -gno-record-gcc-switches"

What did you do?

https://go.dev/play/p/xNJIPxpQ7Y8

What did you expect to see?

No error from net.FileConn(os.Stdin)

What did you see instead?

This error:

2009/11/10 23:00:00 file file+net /dev/stdin: getsockopt: socket operation on non-socket

Program exited.
@ianlancetaylor
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net.FileConn only supports os.File values that are created from network connections. You can't use any arbitrary net.FileConn with any arbitrary file.

@golang golang locked and limited conversation to collaborators Feb 17, 2023
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@masp @ianlancetaylor @gopherbot