独享代理 Go 示例

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package main
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import (
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	"fmt"
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	"io"
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	"net/http"
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	"net/url"
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	"os"
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	"strings"
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	"time"
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)
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func getenv(key, fallback string) string {
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	value := os.Getenv(key)
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	if value == "" {
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		return fallback
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	}
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	return value
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}
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func main() {
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	host := getenv("PRIVATE_HOST", "s1.ip.16yun.cn")
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	port := getenv("PRIVATE_PORT", "39010")
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	user := os.Getenv("PRIVATE_USERNAME")
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	pass := os.Getenv("PRIVATE_PASSWORD")
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	target := getenv("TARGET_URL", "https://httpbin.org/ip")
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	base := strings.TrimRight(getenv("PRIVATE_BASE", "http://s1.ip.16yun.cn:887"), "/")
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	if user == "" || pass == "" {
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		panic("缺少 PRIVATE_USERNAME/PRIVATE_PASSWORD")
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	}
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	http.DefaultClient.Timeout = 15 * time.Second
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	for _, path := range []string{"current-ip", "switch-ip", "update"} {
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		url := fmt.Sprintf("%s/simple/%s?username=%s&password=%s", base, path, user, pass)
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		resp, err := http.Get(url)
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		if err != nil {
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			fmt.Println(path, "error:", err)
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			continue
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		}
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		body, _ := io.ReadAll(resp.Body)
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		resp.Body.Close()
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		fmt.Println(path, resp.Status, string(body))
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	}
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	proxyURL, _ := url.Parse(fmt.Sprintf("http://%s:%s@%s:%s", user, pass, host, port))
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	client := &http.Client{
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		Transport: &http.Transport{Proxy: http.ProxyURL(proxyURL)},
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		Timeout: 15 * time.Second,
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	}
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	resp, err := client.Get(target)
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	if err != nil {
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		panic(err)
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	}
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	defer resp.Body.Close()
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	fmt.Println(resp.Status)
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}