update: README.md
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README.md
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README.md
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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.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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$ tcping.exe www.qq.com
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Using www.qq.com A record: 101.91.42.232
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[1] Reply from 101.91.42.232:80: time=14.400ms
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[2] Reply from 101.91.42.232:80: time=15.086ms
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[3] Reply from 101.91.42.232:80: time=14.557ms
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[4] Reply from 101.91.42.232:80: time=11.862ms
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测试完成,成功 4/4 (100.00%)
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Test finished, success 4/4 (100.00%)
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min = 11.862ms, max = 15.086ms, avg = 13.976ms
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```
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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 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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$ tcping.exe www.qq.com 443
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Using www.qq.com A record: 101.91.42.232
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[1] Reply from 101.91.42.232:443: time=12.348ms
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[2] Reply from 101.91.42.232:443: time=10.089ms
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[3] Reply from 101.91.42.232:443: time=10.370ms
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[4] Reply from 101.91.42.232:443: time=9.131ms
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测试完成,成功 4/4 (100.00%)
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Test finished, success 4/4 (100.00%)
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min = 9.131ms, max = 12.348ms, avg = 10.485ms
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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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```shell
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tcping www.qq.com -6
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使用 www.qq.com 的 AAAA 记录: 240e:97c:2f:1::5c
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[1] 来自 [240e:97c:2f:1::5c]:80 的响应: 时间=30.795ms
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[2] 来自 [240e:97c:2f:1::5c]:80 的响应: 时间=30.247ms
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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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$ tcping.exe www.qq.com -6
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Using www.qq.com AAAA record: 240e:e1:a800:120::36
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[1] Reply from [240e:e1:a800:120::36]:80: time=17.576ms
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[2] Reply from [240e:e1:a800:120::36]:80: time=14.510ms
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[3] Reply from [240e:e1:a800:120::36]:80: time=14.667ms
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[4] Reply from [240e:e1:a800:120::36]:80: time=15.449ms
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测试完成,成功 4/4 (100.00%)
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Test finished, success 4/4 (100.00%)
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min = 14.510ms, max = 17.576ms, avg = 15.551ms
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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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