40 lines
695 B
Go
40 lines
695 B
Go
//go:build fetch_public_ip
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package config
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import (
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"encoding/json"
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"io"
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"net"
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"net/http"
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"strings"
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"time"
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)
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func FetchPublicIPAddress() string {
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client := &http.Client{Timeout: 5 * time.Second}
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resp, err := client.Get("https://api.ipify.org?format=json")
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if err != nil {
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return ""
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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return ""
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}
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body, err := io.ReadAll(io.LimitReader(resp.Body, 256))
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if err != nil {
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return ""
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}
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var payload struct {
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IP string `json:"ip"`
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}
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if err := json.Unmarshal(body, &payload); err != nil {
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return ""
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}
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ip := strings.TrimSpace(payload.IP)
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if net.ParseIP(ip) == nil {
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return ""
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}
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return ip
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}
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