You've already forked ddns-updater
54 lines
990 B
Go
54 lines
990 B
Go
package public_resolvers
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import (
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"context"
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"fmt"
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"io"
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"net"
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"net/http"
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)
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const (
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IfConfigMeTag = "ifconfig.me"
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)
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type Doer interface {
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Do(*http.Request) (*http.Response, error)
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}
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var (
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ifConfigMeUrl = "https://ifconfig.me"
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)
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type IfConfigMe struct {
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client Doer
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}
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func NewIfConfigMe(c Doer) *IfConfigMe {
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return &IfConfigMe{client: c}
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}
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func (i IfConfigMe) ResolvePublicIp(ctx context.Context) (net.IP, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, ifConfigMeUrl, nil)
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if err != nil {
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return net.IP{}, fmt.Errorf("error creating ifconfig request: %w", err)
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}
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resp, err := i.client.Do(req)
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if err != nil {
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return net.IP{}, err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return net.IP{}, fmt.Errorf("unexpected response code %d", resp.StatusCode)
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}
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ipText, err := io.ReadAll(resp.Body)
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if err != nil {
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return net.IP{}, fmt.Errorf("error reading body: %w", err)
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}
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return net.ParseIP(string(ipText)), nil
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}
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