Post to .asmx with Golang on Win10

postcrawler.go

package main

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"os"

	"github.com/Azure/go-ntlmssp"
)

func main() {
	url, username, password := "https://someservice/some.asmx/somemethod", "user", "password"

	client := &http.Client{Transport: ntlmssp.Negotiator{RoundTripper: &http.Transport{}}}
	req, _ := http.NewRequest("POST", url, nil)

	req.SetBasicAuth(username, password)
	req.Header.Set("Content-Length", "0")
	req.Header.Set("Content-Type", "application/json; charset=utf-8")

	res, err := client.Do(req)

	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	defer res.Body.Close()
	answerHTML, err := ioutil.ReadAll(res.Body)

	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	fmt.Println(string(answerHTML))
}