go disable keepalive do not work

[moyuduo]

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

$ go version
go version go1.13 linux/amd64

Does this issue reproduce with the latest release?

no

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

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build270385674=/tmp/go-build -gno-record-gcc-switches"

What did you do?

i have write a server use go and disable keepalive, and then i write a client use go to connect this server, why i use wireshark to capture package still capture tcp keepalive package? is disable keepalive do not work?
server code:
listenner, err := net.ListenTCP("tcp", &net.TCPAddr{ Port: port, }) if err != nil { panic(err) } for { conn, err := listenner.AcceptTCP() if err != nil { fmt.Printf("accept error: %s \n", err) continue } conn.SetKeepAlive(false) n, err := conn.Write([]byte("You are welcome. I'm server.")) if err != nil { log.Printf("write datat to client error: %s \n", err) continue } log.Printf("write %d bytes \n", n) }
client code:
`conn, err := net.Dial("tcp", addr)
if err != nil {
fmt.Println("dial failed:", err)
os.Exit(1)
}
defer conn.Close()

buffer := make([]byte, 512)

for {

	n, err := conn.Read(buffer)
	if err != nil {
		fmt.Println("Read failed:", err)
		return
	}

	fmt.Println("count:", n, "msg:", string(buffer))
}`

What did you expect to see?

wireshark do not capture tcp keepalive package

What did you see instead?

[seankhliao]

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