update: params
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20
README.md
20
README.md
@@ -1,33 +1,33 @@
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# Tcping GO
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一个使用go写的小工具,用于检测TCP端口是否开放
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一个使用 Golang 写的小工具,用于检测TCP端口是否开放
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## 使用方法
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你可以简单的测试一个地址的某个端口是否开放,可以使用域名或者IP地址,默认测试该地址的80端口
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你可以简单的测试一个域名(或 IP 地址)的某个端口是否开放,默认测试 80 端口
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```shell
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tcping www.baidu.com
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tcping www.qq.com
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使用 www.qq.com 的 A 记录: 175.27.8.138
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[1] 来自 175.27.8.138:80 的响应: 时间=29.256ms
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[2] 来自 175.27.8.138:80 的响应: 时间=29.086ms
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[3] 来自 175.27.8.138:80 的响应: 时间=37.761ms
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[4] 来自 175.27.8.138:80 的响应: 时间=30.259ms
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测试完成,成功次数: 4/4
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测试完成,成功 4/4 (100.00%)
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```
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使用 `-p` 指定端口号,如下
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也可以指定测试端口号,跟随在域名或 IP 地址后面
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```shell
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tcping www.qq.com -p 443
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tcping www.qq.com 443
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使用 www.qq.com 的 A 记录: 175.27.8.138
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[1] 来自 175.27.8.138:443 的响应: 时间=28.835ms
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[2] 来自 175.27.8.138:443 的响应: 时间=27.419ms
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[3] 来自 175.27.8.138:443 的响应: 时间=44.382ms
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[4] 来自 175.27.8.138:443 的响应: 时间=28.356ms
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测试完成,成功次数: 4/4
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测试完成,成功 4/4 (100.00%)
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```
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使用 `-6` 指定使用IPv6(仅对域名有效)
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@@ -40,11 +40,13 @@ tcping www.qq.com -6
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[3] 来自 [240e:97c:2f:1::5c]:80 的响应: 时间=30.856ms
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[4] 来自 [240e:97c:2f:1::5c]:80 的响应: 时间=30.275ms
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测试完成,成功次数: 4/4
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测试完成,成功 4/4 (100.00%)
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```
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使用 `-c` 指定测试次数,默认为4次
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使用 `-t` 指定超时时间,默认为2秒
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使用 `-s` 指定超时时间,默认为2秒
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使用 `-t` 来启用无限次测试模式
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使用 `-f` 来启用快速模式,降低两次成功测试之间的间隔时间
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56
main.go
56
main.go
@@ -5,6 +5,7 @@ import (
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"net"
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"os"
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"os/signal"
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"strconv"
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"syscall"
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"time"
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@@ -28,15 +29,13 @@ func main() {
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version := "1.0.0"
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// 设置命令行参数
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showHelp := flag.BoolP("help", "h", false, "显示帮助信息")
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showVersion := flag.BoolP("version", "v", false, "显示版本信息")
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flag.IntVarP(&port, "port", "p", 80, "端口,默认为80")
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flag.IntVarP(&count, "count", "c", 4, "测试次数,默认为4次")
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flag.DurationVarP(&timeoutDuration, "timeout", "s", 2*time.Second, "超时时间,默认为2秒")
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flag.BoolVarP(&infinite, "infinite", "t", false, "无限次测试")
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flag.BoolVarP(&ipv6, "ipv6", "6", false, "使用 IPv6,需搭配域名使用")
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flag.BoolVarP(&fast, "fast", "f", false, "快速模式,降低每次成功测试之间的间隔")
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showHelp := flag.BoolP("help", "h", false, "Show help")
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showVersion := flag.BoolP("version", "v", false, "Show version")
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flag.IntVarP(&count, "count", "c", 4, "Number of probes, default 4")
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flag.DurationVarP(&timeoutDuration, "timeout", "s", 2*time.Second, "Timeout, default 2s")
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flag.BoolVarP(&infinite, "infinite", "t", false, "Infinite probes")
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flag.BoolVarP(&ipv6, "ipv6", "6", false, "Use IPv6; requires domain name")
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flag.BoolVarP(&fast, "fast", "f", false, "Fast mode; reduce delay between successful probes")
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flag.Parse()
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@@ -56,13 +55,21 @@ func main() {
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os.Exit(1)
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}
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hostname := args[0]
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port = 80
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if len(args) >= 2 {
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p, err := strconv.Atoi(args[1])
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if err != nil {
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fmt.Println("Port must be an integer")
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os.Exit(1)
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}
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port = p
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}
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if port < 1 || port > 65535 {
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fmt.Println("端口号必须在1-65535之间")
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fmt.Println("Port must be between 1 and 65535")
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os.Exit(1)
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}
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hostname := args[0]
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// 设置信号捕获
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stopped = false
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sigChan := make(chan os.Signal, 1)
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@@ -74,7 +81,7 @@ func main() {
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// 解析域名
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ips, err := net.LookupIP(hostname)
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if err != nil {
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fmt.Printf("解析 %s 失败: %s\n", hostname, err)
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fmt.Printf("Failed to resolve %s: %s\n", hostname, err)
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os.Exit(1)
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}
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record := "A"
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@@ -83,10 +90,10 @@ func main() {
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}
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ip, err = filterIP(ips, ipv6)
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if err != nil {
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fmt.Printf("找不到 %s 的 %s 记录\n", hostname, record)
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fmt.Printf("No %s record found for %s\n", record, hostname)
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os.Exit(1)
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}
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fmt.Printf("使用 %s 的 %s 记录: %s\n", hostname, record, ip)
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fmt.Printf("Using %s %s record: %s\n", hostname, record, ip)
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} else {
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ip = hostname
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}
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@@ -107,11 +114,11 @@ func main() {
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fmt.Printf("[%d] ", i+1)
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if err != nil {
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fmt.Printf("测试到 %s 的连接失败: %s\n", address, "连接超时")
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fmt.Printf("Connection to %s failed: %s\n", address, "timeout")
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} else {
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successCount++
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successDelay = append(successDelay, duration)
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fmt.Printf("来自 %s 的响应: 时间=%s\n", address, fmt.Sprintf("%.3fms", float64(duration)/float64(time.Millisecond)))
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fmt.Printf("Reply from %s: time=%s\n", address, fmt.Sprintf("%.3fms", float64(duration)/float64(time.Millisecond)))
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conn.Close()
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}
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@@ -127,20 +134,17 @@ func main() {
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done <- true
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}()
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// 等待信号或测试完成
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select {
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case <-sigChan:
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fmt.Println("\n测试被用户中断")
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fmt.Println("\nTest interrupted by user")
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stopped = true
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case <-done:
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}
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// 打印统计结果
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if !stopped {
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fmt.Println()
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}
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// convert duration to milliseconds
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successDelayMs := make([]float64, len(successDelay))
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for i, delay := range successDelay {
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successDelayMs[i] = float64(delay) / float64(time.Millisecond)
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@@ -149,13 +153,17 @@ func main() {
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minDelay := 0.0
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maxDelay := 0.0
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avgDelay := 0.0
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successRate := 0.0
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if successCount > 0 {
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minDelay = float64_min(successDelayMs)
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maxDelay = float64_max(successDelayMs)
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avgDelay = float64_avg(successDelayMs)
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}
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fmt.Printf("测试完成,成功次数: %d/%d,最小=%.3fms,最大=%.3fms,平均=%.3fms\n", successCount, attemptCount, minDelay, maxDelay, avgDelay)
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if attemptCount > 0 {
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successRate = float64(successCount) / float64(attemptCount) * 100
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}
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fmt.Printf("Test finished, success %d/%d (%.2f%%)\nmin = %.3fms, max = %.3fms, avg = %.3fms\n", successCount, attemptCount, successRate, minDelay, maxDelay, avgDelay)
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}
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func filterIP(ips []net.IP, ipv6 bool) (string, error) {
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@@ -172,7 +180,7 @@ func filterIP(ips []net.IP, ipv6 bool) (string, error) {
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}
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}
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}
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return "", fmt.Errorf("找不到合适的IP地址")
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return "", fmt.Errorf("no suitable IP address found")
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}
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func float64_min(array []float64) float64 {
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@@ -201,4 +209,4 @@ func float64_avg(array []float64) float64 {
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sum += value
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}
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return sum / float64(len(array))
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}
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}
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