$ go env
C:\Users\Administrator>go env
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Administrator\AppData\Local\go-build
set GOENV=C:\Users\Administrator\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\Administrator\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\Administrator\go
set GOPRIVATE=
set GOPROXY=https://goproxy.cn,direct
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.google.cn
set GOTMPDIR=
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.18.10
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=NUL
set GOWORK=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build205457987=/tmp/go-build -gno-record-gcc-switches

package main
import (

"fmt"

"net/http"

"time"

)
func main() {

//url := "https://www.google.com"    //ok

url := "http://www.google.com" //failed
// Retry for a maximum of 3 times with a 1-second delay between retries
maxRetries := 3
retryDelay := time.Second

for i := 0; i < maxRetries; i++ {
	resp, err := http.Get(url)
	if err == nil {
		// Successfully fetched the URL, handle the response here
		fmt.Println(resp.Status)
		resp.Body.Close()
		break
	}

	// If there's an error, wait before retrying
	fmt.Printf("Error fetching URL: %s. Retrying...\n", err)
	time.Sleep(retryDelay)
}

fmt.Println("Finished.")

}