x:net error compiling

[lhirlimann]

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

[opc@webii ~]$ go version
go version go1.14.12 linux/amd64

Does this issue reproduce with the latest release?

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

go env Output

[opc@webii ~]$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/opc/.cache/go-build"
GOENV="/home/opc/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/tmp/tmp.t1bKwi98lk"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/lib/golang"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/golang/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 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build567281578=/tmp/go-build -gno-record-gcc-switches"

What did you do?

[opc@webii ~]$ go get gitlab.com/yawning/obfs4.git/obfs4proxy
# golang.org/x/net/http2
/tmp/tmp.t1bKwi98lk/src/golang.org/x/net/http2/transport.go:598:14: undefined: tls.Dialer
[opc@webii ~]

[mvdan]

Go 1.14.x is no longer supported. You need Go 1.15 or later. See https://golang.org/pkg/crypto/tls/#Dialer.

If you're stuck on an older Go version, pin older versions of libraries via modules.

[mvdan]

Also, see https://golang.org/wiki/Questions.

[ALTree]

As mvdan said, you may need to upgrade your Go version. But anyway its looks like Ian decided to keep 1.14 and below able to compile x/net, see #45946. Closing here.

[gopherbot]

Change https://golang.org/cl/317069 mentions this issue: crypto/tls: don't use tls.Dialer on pre-Go1.15 systems

[ianlancetaylor]

Since this came up five times in 24 hours, I went ahead and patches golang.org/x/net so that it will work with versions of Go before 1.15. That should fix this problem. I still strongly encourage everyone to upgrade to a supported version of Go, and I do not promise that this will not break again in the future.