一、示例

import requests

def GetPublicIP():
    rsp = requests.get(f'https://ipinfo.io/ip')
    return rsp.text

print(GetPublicIP())

def GetIPLocation(ip):
    response = requests.get(f'https://ipinfo.io/{ip}/json')
    data = response.json()
    return data

ip = '8.8.8.8'  # 这是Google的公共DNS IP
print(GetIPLocation(ip))

二、用户端调用

如果在用户端调用，如客户端，app等，可以直接使用 ipinfo.io 的接口。因为 ipinfo.io 提供了免费套餐，一个帐户可以有 50,000次每个月。

就算不注册帐户，也有一定次数的免费额度。
It’s also possible to use the API without authentication in a more limited capacity.

# With Basic Auth
$ curl -u 048a85f6a2a791: ipinfo.io

# With Bearer token
$ curl -H "Authorization: Bearer 048a85f6a2a791" ipinfo.io

# With token query parameter
$ curl ipinfo.io?token=048a85f6a2a791

三、服务端调用

可以注册一批帐户池，来扩大免费套餐的限制

// 管理 API 令牌的轮询及统计
type TokenManager struct {
	tokens     []string       // 50,000 requests per-month for each token
	callCounts map[string]int // 统计次数
	index      int            // token 数组的索引
	mu         sync.Mutex
}

func NewTokenManager(tokens []string) *TokenManager {
	callCounts := make(map[string]int)

	for _, token := range tokens {
		callCounts[token] = 0
	}

	return &TokenManager{
		tokens:     tokens,
		index:      0,
		callCounts: callCounts,
	}
}

// 轮询获取下一个令牌并更新调用次数
func (tm *TokenManager) GetNextToken() string {
	tm.mu.Lock()
	defer tm.mu.Unlock()
	token := tm.tokens[tm.index]
	tm.callCounts[token]++
	tm.index = (tm.index + 1) % len(tm.tokens)
	return token
}

// GetCallCounts 返回每个令牌的调用次数
func (tm *TokenManager) GetCallCounts() map[string]int {
	tm.mu.Lock()
	defer tm.mu.Unlock()
	counts := make(map[string]int)
	for token, count := range tm.callCounts {
		counts[token] = count
	}
	return counts
}

var gTokenMgr = NewTokenManager([]string{
	"......8978....",
	"......7e70....",
	"......7745....",
	"......f6a2....",
})

func GetIpLocation(ctx iris.Context) {
	defer func() {
		if r := recover(); r != nil {
			util.GLog().Error(r)
		}
	}()

	remoteIP := ctx.RemoteAddr()          // 获取 IP
	ip := strings.Split(remoteIP, ":")[0] // 去掉端口号
	url := "https://ipinfo.io/" + ip + "/json?token=" + gTokenMgr.GetNextToken()

	rsp, err := http.Get(url)
	if err != nil {
		msg := "Error fetching IP info"
		util.GLog().Error(ip, msg)
		ctx.StatusCode(http.StatusInternalServerError)
		ctx.Text(msg)
		return
	}
	defer rsp.Body.Close()

	body, err := io.ReadAll(rsp.Body)
	if err != nil {
		msg := "Error reading response body"
		util.GLog().Error(ip, msg)
		ctx.StatusCode(http.StatusInternalServerError)
		ctx.Text(msg)
		return
	}

	util.GLog().Info(string(body))
	ctx.Text(string(body))
}

func Dump(ctx iris.Context) {
	callCounts := gTokenMgr.GetCallCounts()
	ctx.JSON(callCounts)
}