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package main
import (
"bufio"
"encoding/csv"
"encoding/json"
"flag"
"fmt"
"io"
"net"
"net/http"
"os"
"os/exec"
"regexp"
"runtime"
"sort"
"strconv"
"strings"
"sync"
"time"
)
const (
timeout = 1 * time.Second // 超时时间
maxDuration = 2 * time.Second // 最大持续时间
)
var (
File = flag.String("file", "ip.txt", "IP地址文件名称,格式为 ip port ,就是IP和端口之间用空格隔开") // IP地址文件名称
outFile = flag.String("outfile", "ip.csv", "输出文件名称") // 输出文件名称
maxThreads = flag.Int("max", 100, "并发请求最大协程数") // 最大协程数
speedTest = flag.Int("speedtest", 5, "下载测速协程数量,设为0禁用测速") // 下载测速协程数量
speedLimit = flag.Int("speedlimit", 0, "最低下载速度(MB/s)") // 最低下载速度
speedTestURL = flag.String("url", "speed.cloudflare.com/__down?bytes=500000000", "测速文件地址") // 测速文件地址
enableTLS = flag.Bool("tls", true, "是否启用TLS") // TLS是否启用
TCPurl = flag.String("tcpurl", "www.speedtest.net", "TCP请求地址") // TCP请求地址
)
type result struct {
ip string // IP地址
port int // 端口
dataCenter string // 数据中心
region string // 地区
cca1 string // 国家代码
cca2 string // 国家
city string // 城市
latency string // 延迟
tcpDuration time.Duration // TCP请求延迟
}
type speedtestresult struct {
result
downloadSpeed float64 // 下载速度
}
type location struct {
Iata string `json:"iata"`
Lat float64 `json:"lat"`
Lon float64 `json:"lon"`
Cca1 string `json:"cca1"`
Cca2 string `json:"cca2"`
Region string `json:"region"`
City string `json:"city"`
}
// 尝试提升文件描述符的上限
func increaseMaxOpenFiles() {
fmt.Println("正在尝试提升文件描述符的上限...")
cmd := exec.Command("bash", "-c", "ulimit -n 10000")
_, err := cmd.CombinedOutput()
if err != nil {
fmt.Printf("提升文件描述符上限时出现错误: %v\n", err)
} else {
fmt.Printf("文件描述符上限已提升!\n")
}
}
func main() {
flag.Parse()
startTime := time.Now()
osType := runtime.GOOS
// 如果是linux系统,尝试提升文件描述符的上限
// 判断是否以root用户运行
if osType == "linux" && os.Getuid() == 0 {
increaseMaxOpenFiles()
}
var locations []location
/////////////////////////////
body := 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json.Unmarshal([]byte(body), &locations)
////////////////////////////////////////////
locationMap := make(map[string]location)
for _, loc := range locations {
locationMap[loc.Iata] = loc
}
ips, err := readIPs(*File)
if err != nil {
fmt.Printf("无法从文件中读取 IP: %v\n", err)
return
}
var wg sync.WaitGroup
wg.Add(len(ips))
resultChan := make(chan result, len(ips))
thread := make(chan struct{}, *maxThreads)
var count int
total := len(ips)
for _, ip := range ips {
thread <- struct{}{}
go func(ip string) {
defer func() {
<-thread
wg.Done()
count++
percentage := float64(count) / float64(total) * 100
fmt.Printf("已完成: %d 总数: %d 已完成: %.2f%%\r", count, total, percentage)
if count == total {
fmt.Printf("已完成: %d 总数: %d 已完成: %.2f%%\n", count, total, percentage)
}
}()
parts := strings.Fields(ip)
if len(parts) != 2 {
fmt.Printf("IP地址格式错误: %s\n", ip)
return
}
ipAddr := parts[0]
portStr := parts[1]
port, err := strconv.Atoi(portStr)
if err != nil {
fmt.Printf("端口格式错误: %s\n", portStr)
return
}
dialer := &net.Dialer{
Timeout: timeout,
KeepAlive: 0,
}
start := time.Now()
conn, err := dialer.Dial("tcp", net.JoinHostPort(ipAddr, strconv.Itoa(port)))
if err != nil {
return
}
defer func(conn net.Conn) {
err := conn.Close()
if err != nil {
}
}(conn)
tcpDuration := time.Since(start)
start = time.Now()
client := http.Client{
Transport: &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
return conn, nil
},
},
Timeout: timeout,
}
var protocol string
if *enableTLS {
protocol = "https://"
} else {
protocol = "http://"
}
requestURL := protocol + *TCPurl + "/cdn-cgi/trace"
req, _ := http.NewRequest("GET", requestURL, nil)
// 添加用户代理
req.Header.Set("User-Agent", "Mozilla/5.0")
req.Close = true
resp, err := client.Do(req)
if err != nil {
return
}
duration := time.Since(start)
if duration > maxDuration {
return
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
}
}(resp.Body)
body, err := io.ReadAll(resp.Body)
if err != nil {
return
}
if strings.Contains(string(body), "uag=Mozilla/5.0") {
if matches := regexp.MustCompile(`colo=([A-Z]+)`).FindStringSubmatch(string(body)); len(matches) > 1 {
dataCenter := matches[1]
loc, ok := locationMap[dataCenter]
if ok {
fmt.Printf("发现有效IP %s 端口 %d 位置信息 %s 延迟 %d 毫秒\n", ipAddr, port, loc.City, tcpDuration.Milliseconds())
resultChan <- result{ipAddr, port, dataCenter, loc.Region, loc.Cca1, loc.Cca2, loc.City, fmt.Sprintf("%d ms", tcpDuration.Milliseconds()), tcpDuration}
} else {
fmt.Printf("发现有效IP %s 端口 %d 位置信息未知 延迟 %d 毫秒\n", ipAddr, port, tcpDuration.Milliseconds())
resultChan <- result{ipAddr, port, dataCenter, "", "", "", "", fmt.Sprintf("%d ms", tcpDuration.Milliseconds()), tcpDuration}
}
}
}
}(ip)
}
wg.Wait()
close(resultChan)
if len(resultChan) == 0 {
fmt.Println("没有发现有效的IP")
return
}
var results []speedtestresult
if *speedTest > 0 {
fmt.Printf("开始测速\n")
var wg2 sync.WaitGroup
wg2.Add(*speedTest)
count = 0
total := len(resultChan)
results = []speedtestresult{}
for i := 0; i < *speedTest; i++ {
thread <- struct{}{}
go func() {
defer func() {
<-thread
wg2.Done()
}()
for res := range resultChan {
downloadSpeed := getDownloadSpeed(res.ip, res.port)
results = append(results, speedtestresult{result: res, downloadSpeed: downloadSpeed})
count++
percentage := float64(count) / float64(total) * 100
fmt.Printf("已完成: %.2f%%\r", percentage)
if count == total {
fmt.Printf("已完成: %.2f%%\033[0\n", percentage)
}
}
}()
}
wg2.Wait()
} else {
for res := range resultChan {
results = append(results, speedtestresult{result: res})
}
}
if *speedTest > 0 {
sort.Slice(results, func(i, j int) bool {
return results[i].downloadSpeed > results[j].downloadSpeed
})
} else {
sort.Slice(results, func(i, j int) bool {
return results[i].result.tcpDuration < results[j].result.tcpDuration
})
}
file, err := os.Create(*outFile)
if err != nil {
fmt.Printf("无法创建文件: %v\n", err)
return
}
defer func(file *os.File) {
err := file.Close()
if err != nil {
}
}(file)
// 写入UTF-8 BOM
_, err = file.WriteString("\xEF\xBB\xBF")
if err != nil {
return
}
writer := csv.NewWriter(file)
if *speedTest > 0 {
writer.Write([]string{"IP地址", "端口", "TLS", "数据中心", "地区", "国际代码", "国家", "城市", "网络延迟", "下载速度MB/s"})
} else {
writer.Write([]string{"IP地址", "端口", "TLS", "数据中心", "地区", "国际代码", "国家", "城市", "网络延迟"})
}
for _, res := range results {
if *speedTest > 0 {
if res.downloadSpeed >= float64(*speedLimit) {
writer.Write([]string{res.result.ip, strconv.Itoa(res.result.port), strconv.FormatBool(*enableTLS), res.result.dataCenter, res.result.region, res.result.cca1, res.result.cca2, res.result.city, res.result.latency, fmt.Sprintf("%.2f", res.downloadSpeed)})
}
} else {
writer.Write([]string{res.result.ip, strconv.Itoa(res.result.port), strconv.FormatBool(*enableTLS), res.result.dataCenter, res.result.region, res.result.cca1, res.result.cca2, res.result.city, res.result.latency})
}
}
writer.Flush()
// 清除输出内容
fmt.Print("\033[2J")
fmt.Printf("成功将结果写入文件 %s，耗时 %d秒\n", *outFile, time.Since(startTime)/time.Second)
}
// 从文件中读取IP地址和端口
func readIPs(File string) ([]string, error) {
file, err := os.Open(File)
if err != nil {
return nil, err
}
defer func(file *os.File) {
err := file.Close()
if err != nil {
}
}(file)
var ips []string
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := scanner.Text()
parts := strings.Fields(line)
if len(parts) != 2 {
fmt.Printf("行格式错误: %s\n", line)
continue
}
ipAddr := parts[0]
portStr := parts[1]
port, err := strconv.Atoi(portStr)
if err != nil {
fmt.Printf("端口格式错误: %s\n", portStr)
continue
}
ip := fmt.Sprintf("%s %d", ipAddr, port)
ips = append(ips, ip)
}
return ips, scanner.Err()
}
// 测速函数
func getDownloadSpeed(ip string, port int) float64 {
var protocol string
if *enableTLS {
protocol = "https://"
} else {
protocol = "http://"
}
speedTestURL := protocol + *speedTestURL
// 创建请求
req, _ := http.NewRequest("GET", speedTestURL, nil)
req.Header.Set("User-Agent", "Mozilla/5.0")
// 创建TCP连接
dialer := &net.Dialer{
Timeout: timeout,
KeepAlive: 0,
}
conn, err := dialer.Dial("tcp", net.JoinHostPort(ip, strconv.Itoa(port)))
if err != nil {
return 0
}
defer func(conn net.Conn) {
err := conn.Close()
if err != nil {
}
}(conn)
fmt.Printf("正在测试IP %s 端口 %d\n", ip, port)
startTime := time.Now()
// 创建HTTP客户端
client := http.Client{
Transport: &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
return conn, nil
},
},
//设置单个IP测速最长时间为5秒
Timeout: 5 * time.Second,
}
// 发送请求
req.Close = true
resp, err := client.Do(req)
if err != nil {
fmt.Printf("IP %s 端口 %d 测速无效\n", ip, port)
return 0
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
}
}(resp.Body)
// 复制响应体到/dev/null，并计算下载速度
written, _ := io.Copy(io.Discard, resp.Body)
duration := time.Since(startTime)
speed := float64(written) / duration.Seconds() / 1024 / 1024
// 输出结果
fmt.Printf("IP %s 端口 %d 下载速度 %.2f MB/s\n", ip, port, speed)
return speed
}