36 lines
582 B
Go
36 lines
582 B
Go
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// +build !windows
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
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*/
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package conf
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import (
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"fmt"
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"net"
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)
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func resolveHostname(name string) (resolvedIPString string, err error) {
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ips, err := net.LookupIP(name)
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if err != nil {
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return "", err
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}
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var ip net.IP
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for _, iterip := range ips {
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if ip4 := iterip.To4(); ip4 != nil {
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ip = ip4
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break
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}
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if ip == nil {
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ip = iterip
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}
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}
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if ip == nil {
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return "", fmt.Errorf("unable to resolve IP address of endpoint %q (%v)", name, ips)
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}
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return ip.String(), nil
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}
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