You've already forked ddns-updater
30 lines
591 B
Go
30 lines
591 B
Go
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package dns_resolver
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import (
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"context"
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"fmt"
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"net"
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"os"
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"time"
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)
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func ResolveHostname(host string, dns_resolver_ip string) net.IP {
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r := &net.Resolver{
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PreferGo: true,
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Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
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d := net.Dialer{
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Timeout: time.Millisecond * time.Duration(10000),
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}
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return d.DialContext(ctx, network, dns_resolver_ip+":53")
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},
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}
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ips, err := r.LookupHost(context.Background(), host)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Could not get IPs: %v\n", err)
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os.Exit(1)
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}
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return net.ParseIP(ips[len(ips)-1])
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}
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