Open
Description
Go version
go version go1.24.2
Output of go env in your module/workspace:
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/usr/local/google/home/anishshah/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/usr/local/google/home/anishshah/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2073030948=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/dev/null'
GOMODCACHE='/usr/local/google/home/anishshah/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/usr/local/google/home/anishshah/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/lib/go-1.24'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/usr/local/google/home/anishshah/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/lib/go-1.24/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.2'
GOWORK=''
PKG_CONFIG='pkg-config'What did you do?
The repro script was executed on GCE Windows VMs, specifically LTSC2019 and LTSC2022 versions, configured with private IP addresses only.
package main
import (
"fmt"
"net"
"net/http"
"time"
)
func DefaultHTTPTransport() *http.Transport {
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
FallbackDelay: 300 * time.Millisecond,
}).DialContext,
MaxIdleConns: 10,
IdleConnTimeout: 30 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: nil,
ExpectContinueTimeout: 5 * time.Second,
}
}
// sendHeadRequest sends a HEAD request to the given URL using the provided http.RoundTripper.
// It returns the HTTP response and an error if one occurred.
func sendHeadRequest(transport http.RoundTripper, url string) (*http.Response, error) {
// Create an http.Client that uses the provided transport.
client := &http.Client{
Transport: transport,
}
// Create a new HEAD request.
req, err := http.NewRequest(http.MethodHead, url, nil)
if err != nil {
return nil, fmt.Errorf("failed to create HEAD request: %w", err)
}
// Send the request using the client.
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to send HEAD request: %w", err)
}
return resp, nil
}
func main() {
fmt.Println("--- Using Default Transport ---")
resp, err := sendHeadRequest(DefaultHTTPTransport(), "https://us-central1-artifactregistry.gcr.io/v2/gke-release-staging/gke-release-staging/csi-node-driver-registrar/manifests/sha256:1676e429022dca0bf2b54c0a18dc27e12ba01a49124ad72e86fd1a16aede024b")
if err != nil {
fmt.Printf("Error with default transport: %v\n", err)
} else {
fmt.Printf("Default Transport Status: %s\n", resp.Status)
resp.Body.Close() // Always close the response body
}
}
What did you see happen?
On Windows LTSC2019: The script consistently fails with TLS handshake timeout
On Windows LTSC2022: The script outputs 401 Unauthorized (expected)
What did you expect to see?
On Windows LTSC2019, I expected successful TLS handshake and output 401 Unauthoriized.