dns_test_154261344.go

// +build windows

package main

import (
	"fmt"
	"unsafe"
	"unicode/utf16"

	"golang.org/x/sys/windows"
)

func main() {
	sizePointer := uint32(15 * 1024)
	adapterAddresses_ := make([]byte, sizePointer)

	var adapterAddresses *windows.IpAdapterAddresses = (*windows.IpAdapterAddresses)(unsafe.Pointer(&adapterAddresses_[0]))

	err := windows.GetAdaptersAddresses(windows.AF_UNSPEC, 0, 0, adapterAddresses, &sizePointer)
	if err != nil {
		panic(err)
	}

	dumpAddress(adapterAddresses)
}

func dumpAddress(addr *windows.IpAdapterAddresses) {
	fmt.Printf("AdapterName = %s\n", bytePtrToString(addr.AdapterName))
	fmt.Printf("FriendlyName = %s\n", cStringToString(addr.FriendlyName))
	if addr.Next != nil {
		dumpAddress(addr.Next)
	}
}

func bytePtrToString(p *uint8) string {
	a := (*[10000]uint8)(unsafe.Pointer(p))
	i := 0
	for a[i] != 0 {
		i++
	}
	return string(a[:i])
}

func cStringToString(cs *uint16) (s string) {
	if cs != nil {
		us := make([]uint16, 0, 256)
		for p := uintptr(unsafe.Pointer(cs)); ; p += 2 {
			u := *(*uint16)(unsafe.Pointer(p))
			if u == 0 {
				return string(utf16.Decode(us))
			}
			us = append(us, u)
		}
	}
	return ""
}

See referenced: https://github.com/Regner/albiondata-client/blob/master/client/net_interface_filter_win.go