What version of Go are you using (go version)?
$ go version
go version go1.13.10 darwin/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="/tmp/.gocache"
GOENV="/Users/jrittner/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/jrittner/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/jrittner/go1.13.10"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/jrittner/go1.13.10/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="0"
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/qz/jbyzqww512dfd00_vfwk74l4zy5gvy/T/go-build718180347=/tmp/go-build -gno-record-gcc-switches -fno-common"
What did you do?
I set up an http.Transport with a non-nil, empty map for TLSNextProto in order to disable HTTP/2, as per the documentation.
https://golang.org/pkg/net/http/
Programs that must disable HTTP/2 can do so by setting Transport.TLSNextProto (for clients) or Server.TLSNextProto (for servers) to a non-nil, empty map.
transport := http.DefaultTransport.(*http.Transport).Clone()
transport.TLSNextProto = make(map[string]func(authority string, c *tls.Conn) http.RoundTripper)
httpClient := &http.Client{
Transport: transport,
}
resp, err := httpClient.Get("https://google.com")
if err != nil {
panic(err)
}
defer resp.Body.Close()
fmt.Println("Response status:", resp.Status)What did you expect to see?
I expected it to do HTTP/1.1 over TLS.
What did you see instead?
panic: Get https://google.com: net/http: HTTP/1.x transport connection broken: malformed HTTP response "\x00\x00\x12\x04\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00d\x00\x04\x00\x10\x00\x00\x00\x06\x00\x00@\x00\x00\x00\x04\b\x00\x00\x00\x00\x00\x00\x0f\x00\x01\x00\x00\x1e\a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01http2_handshake_failed"
What version of Go are you using (
go version)?Does this issue reproduce with the latest release?
Yes.
What operating system and processor architecture are you using (
go env)?go envOutputWhat did you do?
I set up an
http.Transportwith a non-nil, empty map forTLSNextProtoin order to disable HTTP/2, as per the documentation.https://golang.org/pkg/net/http/
What did you expect to see?
I expected it to do HTTP/1.1 over TLS.
What did you see instead?