Go http context not able to capture cancellation signal when request has body (curl, postman)

[lnshi]

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

$ go version
go version go1.12.1 darwin/amd64

Does this issue reproduce with the latest release?

Not test yet.

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

go env Output

$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/i347070/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/i347070/go_projects"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.12.1/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.12.1/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
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=/var/folders/xw/fjl2c85x0psg7nm1sth8y_m40000gn/T/go-build332313412=/tmp/go-build -gno-record-gcc-switches -fno-common"

I already asked this question in stackoverflow, in case it is a bug of the context package, i referenced the question here, in the question there is recipe to reproduce the problem and the correct/wrong behaviour i experienced.

Reference link: Go http context not able to capture cancellation signal when request has body (curl, postman)

[lnshi]

Closing as there is qualified answer in the stackoverflow question.