调整 文字格式细节

重构 代码 (感谢 @seek4self )
优化 TCPing 代码
调整 `-dt / -dn / -p` 参数的默认值为 10 (原为 20)

.gitignore

@@ -0,0 +1,4 @@
+dist
+Releases
+*.exe
+*.csv

IPRangeLoader.go

@@ -1,39 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"log"
-	"net"
-	"os"
-)
-
-func loadFirstIPOfRangeFromFile() []net.IPAddr {
-	file, err := os.Open("ip.txt")
-	if err != nil {
-		log.Fatal(err)
-	}
-	firstIPs := make([]net.IPAddr, 0)
-	scanner := bufio.NewScanner(file)
-	scanner.Split(bufio.ScanLines)
-	for scanner.Scan() {
-		IPString := scanner.Text()
-		firstIP, IPRange, err := net.ParseCIDR(IPString)
-		if err != nil {
-			log.Fatal(err)
-		}
-		firstIP[15]=ipEndWith
-		for IPRange.Contains(firstIP) {
-			firstIPCopy := make([]byte, len(firstIP))
-			copy(firstIPCopy, firstIP)
-			firstIPs = append(firstIPs, net.IPAddr{IP: firstIPCopy})
-			firstIP[14]++
-			if firstIP[14] == 0 {
-				firstIP[13]++
-				if firstIP[13] == 0 {
-					firstIP[12]++
-				}
-			}
-		}
-	}
-	return firstIPs
-}

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,10 +1,346 @@
-# CloudflareScanner
-
-本项目可以测试Cloudflare节点接入速度
-
-程序运行完毕后，结果会保存在当前目录的`result.csv`下
-
-## 注意事项
-#### 协程数请不要调过1000，否则容易出现较大误差
-#### 编译选项为 `go build`
-#### 您可在release界面下载或编译运行
+# XIU2/CloudflareSpeedTest
+
+[![Go Version](https://img.shields.io/github/go-mod/go-version/XIU2/CloudflareSpeedTest.svg?style=flat-square&label=Go&color=00ADD8&logo=go)](https://github.com/XIU2/CloudflareSpeedTest/)
+[![Release Version](https://img.shields.io/github/v/release/XIU2/CloudflareSpeedTest.svg?style=flat-square&label=Release&color=00ADD8&logo=github)](https://github.com/XIU2/CloudflareSpeedTest/releases/latest)
+[![GitHub license](https://img.shields.io/github/license/XIU2/CloudflareSpeedTest.svg?style=flat-square&label=License&color=00ADD8&logo=github)](https://github.com/XIU2/CloudflareSpeedTest/)
+[![GitHub Star](https://img.shields.io/github/stars/XIU2/CloudflareSpeedTest.svg?style=flat-square&label=Star&color=00ADD8&logo=github)](https://github.com/XIU2/CloudflareSpeedTest/)
+[![GitHub Fork](https://img.shields.io/github/forks/XIU2/CloudflareSpeedTest.svg?style=flat-square&label=Fork&color=00ADD8&logo=github)](https://github.com/XIU2/CloudflareSpeedTest/)
+
+[国外很多网站](https://github.com/XIU2/CloudflareSpeedTest/discussions/62)都在使用 Cloudflare CDN，但分配给中国访客的 IP 并不友好（高延迟/高丢包/速度慢等）。  
+虽然 Cloudflare 公开了所有 [IP 段](https://www.cloudflare.com/ips/) ，但想要在这么多 IP 中找到适合自己的，怕是要累死，所以就有了这个软件。  
+
+**「自选 IP/优选 IP」测试 Cloudflare CDN 延迟和速度，获取最快 IP (IPv4+IPv6)**！好用的话**点个⭐鼓励一下叭~**  
+
+> _分享我的其他开源项目：[**TrackersList.com** - 全网热门 BT Tracker 列表！有效提高 BT 下载速度~](https://github.com/XIU2/TrackersListCollection) <img src="https://img.shields.io/github/stars/XIU2/TrackersListCollection.svg?style=flat-square&label=Star&color=4285dd&logo=github" height="16px" />_   
+> _[一个 **\[油猴脚本\]** 轻松解决「Github」文件下载速度慢的问题！](https://github.com/XIU2/UserScript)(及十几个油猴脚本 <img src="https://img.shields.io/github/stars/XIU2/UserScript.svg?style=flat-square&label=Star&color=4285dd&logo=github" height="16px" />_   
+
+****
+## 快速使用
+
+### 下载运行
+
+1. 下载编译好的可执行文件 [蓝奏云](https://pan.lanzoui.com/b0742hkxe) / [Github](https://github.com/XIU2/CloudflareSpeedTest/releases) 并解压。  
+2. 双击运行 `CloudflareST.exe`文件（Windows），等待测速完成...  
+
+<details>
+<summary><code><strong>「 点击查看 Linux 下载运行命令示例 」</strong></code></summary>
+
+****
+
+以下命令仅为示例，版本号和文件名请前往 [**Releases**](https://github.com/XIU2/CloudflareSpeedTest/releases) 查看。
+
+``` bash
+# 如果是第一次使用，则建议创建新文件夹（后续更新请跳过该步骤）
+mkdir CloudflareST
+
+# 进入文件夹（后续更新，只需要从这里重复下面的下载、解压命令即可）
+cd CloudflareST
+
+# 下载 CloudflareST 压缩包（自行根据需求替换 URL 中版本号和文件名）
+wget -N https://github.com/XIU2/CloudflareSpeedTest/releases/download/v1.5.0/CloudflareST_linux_amd64.tar.gz
+
+# 解压（不需要删除旧文件，会直接覆盖，自行根据需求替换 文件名）
+tar -zxf CloudflareST_linux_amd64.tar.gz
+
+# 赋予执行权限
+chmod +x CloudflareST
+
+# 运行
+./CloudflareST
+```
+
+> 如果平**均延迟非常低**（如 0.xx），则说明 CloudflareST **测速时走了代理**，请先关闭代理软件后再测速。  
+> 如果在**路由器**上运行（如 OpenWrt），请先关闭路由器内的代理，否则测速结果会**不准确且无法使用**。
+
+</details>
+
+****
+
+> [_**在 Android 手机上运行 CloudflareST 测速的简单教程 ...**_](https://github.com/XIU2/CloudflareSpeedTest/discussions/61)  
+> _**建议测速时避开晚上高峰期（20:00~24:00）**，否则测速结果会与其他时间**相差很大...**_  
+
+### 结果示例
+
+测速完毕后，默认会显示**最快的 10 个 IP**，示例（我联通白天测速结果）：  
+
+``` bash
+IP 地址           已发送  已接收  丢包率  平均延迟  下载速度 (MB/s)
+104.27.200.69     4       4       0.00    146.23    28.64
+172.67.60.78      4       4       0.00    139.82    15.02
+104.25.140.153    4       4       0.00    146.49    14.90
+104.27.192.65     4       4       0.00    140.28    14.07
+172.67.62.214     4       4       0.00    139.29    12.71
+104.27.207.5      4       4       0.00    145.92    11.95
+172.67.54.193     4       4       0.00    146.71    11.55
+104.22.66.8       4       4       0.00    147.42    11.11
+104.27.197.63     4       4       0.00    131.29    10.26
+172.67.58.91      4       4       0.00    140.19    9.14
+...
+
+# 如果平均延迟非常低（如 0.xx），则说明 CloudflareST 测速时走了代理，请先关闭代理软件后再测速。
+# 如果在路由器上运行（如 OpenWrt），请先关闭路由器内的代理，否则测速结果会不准确且无法使用。
+
+# 因为默认下载测速地址的文件大小只有 300MB，如果你速度太快的话，测速结果可能会低于实际速度。
+# 因为每次测速都是在每个 IP 段中随机 IP，所以每次的测速结果都不可能相同，这是正常的！
+
+# 软件是先 延迟测速并按从低到高排序后，再从 最低延迟的 IP 开始下载测速的，所以：
+```
+
+测速结果第一行就是**既下载速度最快、又平均延迟最低的最快 IP**！至于拿来干嘛？取决于你~  
+
+完整结果保存在当前目录下的 `result.csv` 文件中，用**记事本/表格软件**打开，格式如下：  
+
+```
+IP 地址, 已发送, 已接收, 丢包率, 平均延迟, 下载速度 (MB/s)
+104.27.200.69, 4, 4, 0.00, 146.23, 28.64
+```
+
+> _大家可以按自己需求，对完整结果**进一步筛选处理**，或者去看一看进阶使用**指定过滤条件**！_
+
+****
+## 进阶使用
+
+直接运行使用的是默认参数，如果想要测速结果更全面、更符合自己的要求，可以自定义参数。  
+
+``` cmd
+C:\>CloudflareST.exe -h
+
+CloudflareSpeedTest vX.X.X
+测试 Cloudflare CDN 所有 IP 的延迟和速度，获取最快 IP (IPv4+IPv6)！
+https://github.com/XIU2/CloudflareSpeedTest
+
+参数：
+    -n 200
+        测速线程数量；越多测速越快，性能弱的设备 (如路由器) 请勿太高；(默认 200 最多 1000)
+    -t 4
+        延迟测速次数；单个 IP 延迟测速次数，为 1 时将过滤丢包的IP，TCP协议；(默认 4)
+    -tp 443
+        延迟测速端口；延迟测速 TCP 协议的端口；(默认 443)
+    -dn 10
+        下载测速数量；延迟测速并排序后，从最低延迟起下载测速的数量；(默认 10)
+    -dt 10
+        下载测速时间；单个 IP 下载测速最长时间，单位：秒；(默认 10)
+    -url https://cf.xiu2.xyz/Github/CloudflareSpeedTest.png
+        下载测速地址；用来下载测速的 Cloudflare CDN 文件地址，如地址含有空格请加上引号；
+    -tl 200
+        平均延迟上限；只输出低于指定平均延迟的 IP，可与其他上限/下限搭配；(默认 9999 ms)
+    -tll 40
+        平均延迟下限；只输出高于指定平均延迟的 IP，可与其他上限/下限搭配、过滤被假蔷的 IP；(默认 0 ms)
+    -sl 5
+        下载速度下限；只输出高于指定下载速度的 IP，凑够指定数量 [-dn] 才会停止测速；(默认 0.00 MB/s)
+    -p 10
+        显示结果数量；测速后直接显示指定数量的结果，为 0 时不显示结果直接退出；(默认 10)
+    -f ip.txt
+        IP段数据文件；如路径含有空格请加上引号；支持其他 CDN IP段；(默认 ip.txt)
+    -o result.csv
+        写入结果文件；如路径含有空格请加上引号；值为空时不写入文件 [-o ""]；(默认 result.csv)
+    -dd
+        禁用下载测速；禁用后测速结果会按延迟排序 (默认按下载速度排序)；(默认 启用)
+    -ipv6
+        IPv6测速模式；确保 IP 段数据文件内只包含 IPv6 IP段，软件不支持同时测速 IPv4+IPv6；(默认 IPv4)
+    -allip
+        测速全部的IP；对 IP 段中的每个 IP (仅支持 IPv4) 进行测速；(默认 每个 IP 段随机测速一个 IP)
+    -v
+        打印程序版本+检查版本更新
+    -h
+        打印帮助说明
+```
+
+### 使用示例
+
+Windows 要指定参数需要在 CMD 中运行，或者把参数添加到快捷方式目标中。  
+
+> **注意**：各参数均有**默认值**，使用默认值的参数是可以省略的（**按需选择**），参数**不分前后顺序**。  
+> **提示**：Linux 系统只需要把下面命令中的 `CloudflareST.exe` 改为 `./CloudflareST` 即可。  
+
+#### \# IPv4/IPv6
+
+``` bash
+# 测速 IPv4 时，需要指定 IPv4 数据文件（-f 默认值就是 ip.txt，所以该参数可以省略）
+CloudflareST.exe -f ip.txt
+
+# 测速 IPv6 时，需要指定 IPv6 数据文件( ipv6.txt )，需要加上 -ipv6 参数
+CloudflareST.exe -f ipv6.txt -ipv6
+```
+****
+#### \# 文件相对/绝对路径
+
+``` bash
+# 指定 IPv4 数据文件，不显示结果直接退出，输出结果到文件（-p 值为 0）
+CloudflareST.exe -f 1.txt -p 0 -dd
+
+# 指定 IPv4 数据文件，不输出结果到文件，直接显示结果（-p 值为 10 条，-o 值为空但引号不能少）
+CloudflareST.exe -f 2.txt -o "" -p 10 -dd
+
+# 指定 IPv4 数据文件 及 输出结果到文件（相对路径，即当前目录下，如含空格请加上引号）
+CloudflareST.exe -f 3.txt -o result.txt -dd
+
+# 指定 IPv4 数据文件 及 输出结果到文件（绝对路径，即 C:\abc\ 目录下，如含空格请加上引号）
+CloudflareST.exe -f C:\abc\4.txt -o C:\abc\result.csv -dd
+```
+****
+#### \# 自定义下载测速地址
+
+``` bash
+# 地址要求：可以直接下载、文件大小超过 200MB、用的是 Cloudflare CDN
+CloudflareST.exe -url https://cf.xiu2.xyz/Github/CloudflareSpeedTest.png
+# 因为默认下载测速地址的文件大小只有 300MB，如果你速度太快的话，测速结果可能会低于实际速度。
+```
+****
+#### \# 自定义测速条件
+
+<details>
+<summary><code><strong>「 点击展开 查看内容 」</strong></code></summary>
+
+****
+
+- 指定 **[平均延迟下限]** 条件（用于过滤**被假蔷的 IP**，这类 IP 都被 TCP 劫持，因此延迟很低只有几十ms）
+
+``` bash
+# 平均延迟下限：40 ms （一般除了移动直连香港外，几乎不存在低于 100ms 的，自行测试适合的下限延迟）
+# 平均延迟下限和其他的上下限参数一样，都可以单独使用、互相搭配使用！
+CloudflareST.exe -tll 40
+```
+
+- 仅指定 **[平均延迟上限]** 条件
+
+``` bash
+# 平均延迟上限：200 ms，下载速度下限：0 MB/s，数量：10 个（可选）
+# 即找到平均延迟低于 200 ms 的 IP，然后再按延迟从低到高进行 10 次下载测速
+CloudflareST.exe -tl 200 -dn 10
+```
+
+> 如果没有一个 IP **平均延迟低于 200ms**，那么不会输出任何内容。  
+
+****
+
+- 仅指定 **[平均延迟上限]** 条件，且**只延迟测速，不下载测速**
+
+``` bash
+# 平均延迟上限：200 ms，下载速度下限：0 MB/s，数量：不知道多少 个
+# 即只输出低于 200ms 的 IP，且不再下载测速（因为不再下载测速，所以 -dn 参数就无效了）
+CloudflareST.exe -tl 200 -dd
+```
+
+****
+
+- 仅指定 **[下载速度下限]** 条件
+
+``` bash
+# 平均延迟上限：9999 ms，下载速度下限：5 MB/s，数量：10 个（可选）
+# 即需要找到 10 个平均延迟低于 9999 ms 且下载速度高于 5 MB/s 的 IP 才会停止测速
+CloudflareST.exe -sl 5 -dn 10
+```
+
+> 没有指定平均延迟上限时，如果一直**凑不够**满足条件的 IP 数量，就会**一直测速**下去。    
+> 所以建议**同时指定 [下载速度下限] + [平均延迟上限]**，这样测速到指定延迟上限还没凑够数量，就会终止测速。
+
+****
+
+- 同时指定 **[平均延迟上限] + [下载速度下限]** 条件
+
+``` bash
+# 平均延迟上限、下载速度下限均支持小数（如 -sl 0.5）
+# 平均延迟上限：200 ms，下载速度下限：5.6 MB/s，数量：10 个（可选）
+# 即需要找到 10 个平均延迟低于 200 ms 且下载速度高于 5 .6MB/s 的 IP 才会停止测速
+CloudflareST.exe -tl 200 -sl 5.6 -dn 10
+```
+
+> 如果没有一个 IP **平均延迟低于 200ms**，那么不会输出任何内容。  
+> 如果没有一个 IP **下载速度高于 5.6 MB/s**，那么就会**和不指定 [下载速度下限] 条件一样**输出结果。  
+> 所以建议先不指定条件测速一遍，看看平均延迟和下载速度大概在什么范围，避免指定条件**过低/过高**！
+
+> 因为Cloudflare 公开的 IP 段是**回源 IP+任播 IP**，而**回源 IP**是无法使用的，所以下载测速是 0.00。  
+> 运行时可以加上 `-sl 0.01`（下载速度下限），过滤掉**回源 IP**（下载测速低于 0.01MB/s 的结果）。
+
+</details>
+
+****
+#### \# Windows 快捷方式如何使用参数
+
+<details>
+<summary><code><strong>「 点击展开 查看内容 」</strong></code></summary>
+
+****
+
+``` bash
+## 右键快捷方式 - 目标
+# 如果要不输出结果文件，那么请加上 -o " "，引号里的是空格（没有空格会导致该参数被省略）。
+D:\ABC\CloudflareST\CloudflareST.exe -n 500 -t 4 -dn 20 -dt 5 -o " "
+
+# 如果文件路径包含引号，则需要把启动参数放在引号外面，记得引号和 - 之间有空格。
+"D:\Program Files\CloudflareST\CloudflareST.exe" -n 500 -t 4 -dn 20 -dt 5 -o " "
+```
+
+</details>
+
+****
+#### \# 单独对一个或多个 IP 测速
+
+<details>
+<summary><code><strong>「 点击展开 查看内容 」</strong></code></summary>
+
+****
+
+如果要单独**对一个或多个 IP 进行测速**，只需要把这些 IP 按如下格式写入到任意文本文件中，例如：`1.txt`
+
+``` json
+1.1.1.1
+1.1.1.200
+1.0.0.1/24
+```
+
+> 自从 v1.4.10 版本后，单个 IP 就不需要添加子网掩码 `/32` 了（`1.1.1.1`等同于 `1.1.1.1/32`）。  
+> 子网掩码 `/24` 指的是这个 IP 最后一段，即 `1.0.0.1~1.0.0.255`。
+
+
+然后运行 CloudflareST 时加上启动参数 `-f 1.txt` 即可。
+
+``` bash
+# 先进入 CloudflareST 所在目录，然后运行：
+# Windows 系统（在 CMD 中运行）
+CloudflareST.exe -f 1.txt
+
+# Linux 系统
+./CloudflareST -f 1.txt
+
+# 对于 IP 段 1.0.0.1/24 软件只会随机最后一段（1.0.0.1~255），如果要测速该 IP 段中的所有 IP，需要加上 -allip 参数。
+```
+
+</details>
+
+****
+#### \# 一劳永逸加速所有使用 Cloudflare CDN 的网站（不需要再一个个添加域名到 Hosts 了）
+
+我以前说过，开发该软件项目的目的就是为了通过**改 Hosts 的方式来加速访问使用 Cloudflare CDN 的网站**。
+
+但就如 [**#8**](https://github.com/XIU2/CloudflareSpeedTest/issues/8) 所说，一个个添加域名到 Hosts 实在**太麻烦**了，于是我就找到了个**一劳永逸**的办法！
+
+可以看这个 [**还在一个个添加 Hosts？完美本地加速所有使用 Cloudflare CDN 的网站方法来了！**](https://github.com/XIU2/CloudflareSpeedTest/discussions/71) 
+
+****
+#### \# 自动更新 Hosts
+
+考虑到很多人获得最快 Cloudflare CDN IP 后，需要替换 Hosts 文件中的 IP。
+
+可以看这个 [**Issues**](https://github.com/XIU2/CloudflareSpeedTest/issues/42) 获取 **Windows/Linux 自动更新 Hosts 脚本**！
+
+****
+## 问题反馈
+
+如果你遇到什么问题，可以先去 [**Issues**](https://github.com/XIU2/CloudflareSpeedTest/issues) 里看看是否有别人问过了（记得去看下  [**Closed**](https://github.com/XIU2/CloudflareSpeedTest/issues?q=is%3Aissue+is%3Aclosed) 的）。  
+如果没找到类似问题，请新开个 [**Issues**](https://github.com/XIU2/CloudflareSpeedTest/issues/new) 来告诉我！
+
+> _有问题请**大胆告诉我**，描述越详细越好（必要时可远程协助），如果不说那我怎么去完善功能或~~修复 BUG~~ 呢？！_
+
+****
+## 感谢项目
+
+* https://github.com/Spedoske/CloudflareScanner
+
+> _因为该项目已经很长时间没更新了，而我又产生了很多功能需求，所以我临时学了下 Go 语言就上手了（菜）..._  
+> _本软件基于该项目制作，但**已添加大量功能及修复 BUG**，并根据大家的使用反馈积极添加、优化功能（闲）..._
+
+****
+## License
+The GPL-3.0 License.

go.mod

@@ -1,5 +1,8 @@
-module CloudflareIPScanner
+module CloudflareSpeedTest
 
 go 1.14
 
-require github.com/cheggaaa/pb/v3 v3.0.4
+require (
+	github.com/VividCortex/ewma v1.1.1
+	github.com/cheggaaa/pb/v3 v3.0.4
+)

go.sum

@@ -0,0 +1,17 @@
+github.com/VividCortex/ewma v1.1.1 h1:MnEK4VOv6n0RSY4vtRe3h11qjxL3+t0B8yOL8iMXdcM=
+github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
+github.com/cheggaaa/pb/v3 v3.0.4 h1:QZEPYOj2ix6d5oEg63fbHmpolrnNiwjUsk+h74Yt4bM=
+github.com/cheggaaa/pb/v3 v3.0.4/go.mod h1:7rgWxLrAUcFMkvJuv09+DYi7mMUYi8nO9iOWcvGJPfw=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
+github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/mattn/go-colorable v0.1.2 h1:/bC9yWikZXAL9uJdulbSfyVNIR3n3trXl+v8+1sx8mU=
+github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mattn/go-isatty v0.0.10 h1:qxFzApOv4WsAL965uUPIsXzAKCZxN2p9UqdhFS4ZW10=
+github.com/mattn/go-isatty v0.0.10/go.mod h1:qgIWMr58cqv1PHHyhnkY9lrL7etaEgOFcMEpPG5Rm84=
+github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+twI54=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191128015809-6d18c012aee9 h1:ZBzSG/7F4eNKz2L3GE9o300RX0Az1Bw5HF7PDraD+qU=
+golang.org/x/sys v0.0.0-20191128015809-6d18c012aee9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

ip.txt

@@ -1,3 +1,7 @@
+1.1.1.0/24
+1.0.0.0/24
+1.1.1.1/32
+1.0.0.1/32
 173.245.48.0/20
 103.21.244.0/22
 103.22.200.0/22
@@ -9,6 +13,18 @@
 197.234.240.0/22
 198.41.128.0/17
 162.158.0.0/15
-104.16.0.0/12
-172.64.0.0/13
+104.16.0.0/13
+104.24.0.0/14
+172.64.0.0/17
+172.64.128.0/18
+172.64.192.0/19
+172.64.224.0/22
+172.64.229.0/24
+172.64.230.0/23
+172.64.232.0/21
+172.64.240.0/21
+172.64.248.0/21
+172.65.0.0/16
+172.66.0.0/16
+172.67.0.0/16
 131.0.72.0/22

ipv6.txt

@@ -0,0 +1,90 @@
+2606:4700::/32
+2606:4700::6810:0/112
+2606:4700:10::/96
+2606:4700:10::6814:0/112
+2606:4700:10::ac43:0/112
+2606:4700:130::/48
+2606:4700:130:436c::/64
+2606:4700:130:436c:6f75::/80
+2606:4700:130:436c:6f75:6466::/96
+2606:4700:130:436c:6f75:6466:6c61:0/112
+2606:4700:3000::/48
+2606:4700:3001::/48
+2606:4700:3002::/48
+2606:4700:3003::/48
+2606:4700:3004::/48
+2606:4700:3005::/48
+2606:4700:3006::/48
+2606:4700:3007::/48
+2606:4700:3008::/48
+2606:4700:3009::/48
+2606:4700:3010::/48
+2606:4700:3011::/48
+2606:4700:3012::/48
+2606:4700:3013::/48
+2606:4700:3014::/48
+2606:4700:3015::/48
+2606:4700:3016::/48
+2606:4700:3017::/48
+2606:4700:3018::/48
+2606:4700:3019::/48
+2606:4700:3020::/48
+2606:4700:3021::/48
+2606:4700:3022::/48
+2606:4700:3023::/48
+2606:4700:3024::/48
+2606:4700:3025::/48
+2606:4700:3026::/48
+2606:4700:3027::/48
+2606:4700:3028::/48
+2606:4700:3029::/48
+2606:4700:3030::/48
+2606:4700:3031::/48
+2606:4700:3032::/48
+2606:4700:3033::/48
+2606:4700:3034::/48
+2606:4700:3035::/48
+2606:4700:3036::/48
+2606:4700:3037::/48
+2606:4700:3038::/48
+2606:4700:3039::/48
+2606:4700:3000::/96
+2606:4700:3001::/96
+2606:4700:3002::/96
+2606:4700:3003::/96
+2606:4700:3004::/96
+2606:4700:3005::/96
+2606:4700:3006::/96
+2606:4700:3007::/96
+2606:4700:3008::/96
+2606:4700:3009::/96
+2606:4700:3010::/96
+2606:4700:3011::/96
+2606:4700:3012::/96
+2606:4700:3013::/96
+2606:4700:3014::/96
+2606:4700:3015::/96
+2606:4700:3016::/96
+2606:4700:3017::/96
+2606:4700:3018::/96
+2606:4700:3019::/96
+2606:4700:3020::/96
+2606:4700:3021::/96
+2606:4700:3022::/96
+2606:4700:3023::/96
+2606:4700:3024::/96
+2606:4700:3025::/96
+2606:4700:3026::/96
+2606:4700:3027::/96
+2606:4700:3028::/96
+2606:4700:3029::/96
+2606:4700:3030::/96
+2606:4700:3031::/96
+2606:4700:3032::/96
+2606:4700:3033::/96
+2606:4700:3034::/96
+2606:4700:3035::/96
+2606:4700:3036::/96
+2606:4700:3037::/96
+2606:4700:3038::/96
+2606:4700:3039::/96

main.go

@@ -1,79 +1,150 @@
-package main
-
-import (
-	"encoding/csv"
-	"fmt"
-	"github.com/cheggaaa/pb/v3"
-	"log"
-	"os"
-	"sync"
-)
-
-func ExportCsv(filePath string, data [][]string) {
-	fp, err := os.Create(filePath)
-	if err != nil {
-		log.Fatalf("创建文件["+filePath+"]句柄失败,%v", err)
-		return
-	}
-	defer fp.Close()
-	w := csv.NewWriter(fp) //创建一个新的写入文件流
-	w.WriteAll(data)
-	w.Flush()
-}
-
-var pingTime int
-var pingRoutine int
-const ipEndWith uint8 = 1
-type progressEvent int
-const (
-	NoAvailableIPFound progressEvent = iota
-	AvailableIPFound
-	NormalPing
-)
-
-func handleProgressGenerator(pb *pb.ProgressBar)func (e progressEvent){
-	return func(e progressEvent) {
-		switch e {
-		case NoAvailableIPFound:
-			pb.Add(pingTime)
-		case AvailableIPFound:
-			pb.Add(failTime)
-		case NormalPing:
-			pb.Increment()
-		}
-	}
-}
-
-func handleUserInput(){
-	fmt.Println("请输入扫描协程数(数字越大越快,默认100):")
-	fmt.Scanln(&pingRoutine)
-	if pingRoutine<=0{
-		pingRoutine=100
-	}
-	fmt.Println("请输入tcping次数(默认10):")
-	fmt.Scanln(&pingTime)
-	if pingTime<=0{
-		pingTime=10
-	}
-}
-
-func main(){
-	handleUserInput()
-	ips:=loadFirstIPOfRangeFromFile()
-	pingCount:=len(ips)*pingTime
-	bar := pb.StartNew(pingCount)
-	var wg sync.WaitGroup
-	var mu sync.Mutex
-	var data = make([][]string,0)
-	data = append(data,[]string{"IP Address","Ping received","Ping time"})
-	control := make(chan bool,pingRoutine)
-	for _,ip :=range ips{
-		wg.Add(1)
-		control<-false
-		handleProgress:=handleProgressGenerator(bar)
-		go tcpingGoroutine(&wg,&mu,ip,pingTime, &data,control,handleProgress)
-	}
-	wg.Wait()
-	bar.Finish()
-	ExportCsv("./result.csv",data)
-}
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"runtime"
+	"time"
+
+	"CloudflareSpeedTest/task"
+	"CloudflareSpeedTest/utils"
+)
+
+var (
+	version, versionNew string
+)
+
+func init() {
+	var printVersion bool
+	var help = `
+CloudflareSpeedTest ` + version + `
+测试 Cloudflare CDN 所有 IP 的延迟和速度，获取最快 IP (IPv4+IPv6)！
+https://github.com/XIU2/CloudflareSpeedTest
+
+参数：
+    -n 200
+        测速线程数量；越多测速越快，性能弱的设备 (如路由器) 请勿太高；(默认 200 最多 1000)
+    -t 4
+        延迟测速次数；单个 IP 延迟测速次数，为 1 时将过滤丢包的IP，TCP协议；(默认 4)
+    -tp 443
+        延迟测速端口；延迟测速 TCP 协议的端口；(默认 443)
+    -dn 10
+        下载测速数量；延迟测速并排序后，从最低延迟起下载测速的数量；(默认 10)
+    -dt 10
+        下载测速时间；单个 IP 下载测速最长时间，单位：秒；(默认 10)
+    -url https://cf.xiu2.xyz/Github/CloudflareSpeedTest.png
+        下载测速地址；用来下载测速的 Cloudflare CDN 文件地址，如地址含有空格请加上引号；
+    -tl 200
+        平均延迟上限；只输出低于指定平均延迟的 IP，可与其他上限/下限搭配；(默认 9999 ms)
+    -tll 40
+        平均延迟下限；只输出高于指定平均延迟的 IP，可与其他上限/下限搭配、过滤被假蔷的 IP；(默认 0 ms)
+    -sl 5
+        下载速度下限；只输出高于指定下载速度的 IP，凑够指定数量 [-dn] 才会停止测速；(默认 0.00 MB/s)
+    -p 10
+        显示结果数量；测速后直接显示指定数量的结果，为 0 时不显示结果直接退出；(默认 10)
+    -f ip.txt
+        IP段数据文件；如路径含有空格请加上引号；支持其他 CDN IP段；(默认 ip.txt)
+    -o result.csv
+        写入结果文件；如路径含有空格请加上引号；值为空时不写入文件 [-o ""]；(默认 result.csv)
+    -dd
+        禁用下载测速；禁用后测速结果会按延迟排序 (默认按下载速度排序)；(默认 启用)
+    -ipv6
+        IPv6测速模式；确保 IP 段数据文件内只包含 IPv6 IP段，软件不支持同时测速 IPv4+IPv6；(默认 IPv4)
+    -allip
+        测速全部的IP；对 IP 段中的每个 IP (仅支持 IPv4) 进行测速；(默认 每个 IP 段随机测速一个 IP)
+    -v
+        打印程序版本+检查版本更新
+    -h
+        打印帮助说明
+`
+	var minDelay, maxDelay, downloadTime int
+	flag.IntVar(&task.Routines, "n", 200, "测速线程数量")
+	flag.IntVar(&task.PingTimes, "t", 4, "延迟测速次数")
+	flag.IntVar(&task.TCPPort, "tp", 443, "延迟测速端口")
+	flag.IntVar(&maxDelay, "tl", 9999, "平均延迟上限")
+	flag.IntVar(&minDelay, "tll", 0, "平均延迟下限")
+	flag.IntVar(&downloadTime, "dt", 10, "下载测速时间")
+	flag.IntVar(&task.TestCount, "dn", 10, "下载测速数量")
+	flag.StringVar(&task.URL, "url", "https://cf.xiu2.xyz/Github/CloudflareSpeedTest.png", "下载测速地址")
+	flag.BoolVar(&task.Disable, "dd", false, "禁用下载测速")
+	flag.BoolVar(&task.IPv6, "ipv6", false, "启用IPv6")
+	flag.BoolVar(&task.TestAll, "allip", false, "测速全部 IP")
+	flag.StringVar(&task.IPFile, "f", "ip.txt", "IP 数据文件")
+	flag.Float64Var(&task.MinSpeed, "sl", 0, "下载速度下限")
+	flag.IntVar(&utils.PrintNum, "p", 10, "显示结果数量")
+	flag.StringVar(&utils.Output, "o", "result.csv", "输出结果文件")
+	flag.BoolVar(&printVersion, "v", false, "打印程序版本")
+	flag.Usage = func() { fmt.Print(help) }
+	flag.Parse()
+
+	if task.MinSpeed > 0 && time.Duration(maxDelay)*time.Millisecond == utils.InputMaxDelay {
+		fmt.Println("[小提示] 在使用 [-sl] 参数时，建议搭配 [-tl] 参数，以避免因凑不够 [-dn] 数量而一直测速...")
+	}
+	utils.InputMaxDelay = time.Duration(maxDelay) * time.Millisecond
+	utils.InputMinDelay = time.Duration(minDelay) * time.Millisecond
+	task.Timeout = time.Duration(downloadTime) * time.Second
+
+	if printVersion {
+		println(version)
+		fmt.Println("检查版本更新中...")
+		checkUpdate()
+		if versionNew != "" {
+			fmt.Printf("*** 发现新版本 [%s]！请前往 [https://github.com/XIU2/CloudflareSpeedTest] 更新！ ***", versionNew)
+		} else {
+			fmt.Println("当前为最新版本 [" + version + "]！")
+		}
+		os.Exit(0)
+	}
+}
+
+func main() {
+	go checkUpdate() // 检查版本更新
+
+	fmt.Printf("# XIU2/CloudflareSpeedTest %s \n\n", version)
+
+	// 开始延迟测速
+	pingData := task.NewPing().Run().FilterDelay()
+	// 开始下载测速
+	speedData := task.TestDownloadSpeed(pingData)
+	utils.ExportCsv(speedData)
+	speedData.Print(task.IPv6)
+
+	if versionNew != "" {
+		fmt.Printf("\n*** 发现新版本 [%s]！请前往 [https://github.com/XIU2/CloudflareSpeedTest] 更新！ ***\n", versionNew)
+	}
+	endPrint()
+}
+
+func endPrint() {
+	if utils.NoPrintResult() {
+		return
+	}
+	if runtime.GOOS == "windows" { // 如果是 Windows 系统，则需要按下 回车键 或 Ctrl+C 退出（避免通过双击运行时，测速完毕后直接关闭）
+		fmt.Printf("\n按下 回车键 或 Ctrl+C 退出。")
+		var pause int
+		fmt.Scanln(&pause)
+	}
+}
+
+// 检查更新
+func checkUpdate() {
+	timeout := 10 * time.Second
+	client := http.Client{Timeout: timeout}
+	res, err := client.Get("https://api.xiuer.pw/ver/cloudflarespeedtest.txt")
+	if err != nil {
+		return
+	}
+	// 读取资源数据 body: []byte
+	body, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		return
+	}
+	// 关闭资源流
+	defer res.Body.Close()
+	if string(body) != version {
+		versionNew = string(body)
+	}
+}

task/download.go

@@ -0,0 +1,152 @@
+package task
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"sort"
+	"time"
+
+	"CloudflareSpeedTest/utils"
+
+	"github.com/VividCortex/ewma"
+)
+
+const (
+	bufferSize                     = 1024
+	defaultURL                     = "https://cf.xiu2.xyz/Github/CloudflareSpeedTest.png"
+	defaultTimeout                 = 10 * time.Second
+	defaultDisableDownload         = false
+	defaultTestNum                 = 10
+	defaultMinSpeed        float64 = 0.0
+)
+
+var (
+	// download test url
+	URL = defaultURL
+	// download timeout
+	Timeout = defaultTimeout
+	// disable download
+	Disable = defaultDisableDownload
+
+	TestCount = defaultTestNum
+	MinSpeed  = defaultMinSpeed
+)
+
+func checkDownloadDefault() {
+	if URL == "" {
+		URL = defaultURL
+	}
+	if Timeout <= 0 {
+		Timeout = defaultTimeout
+	}
+	if TestCount <= 0 {
+		TestCount = defaultTestNum
+	}
+	if MinSpeed <= 0.0 {
+		MinSpeed = defaultMinSpeed
+	}
+}
+
+func TestDownloadSpeed(ipSet utils.PingDelaySet) (speedSet utils.DownloadSpeedSet) {
+	checkDownloadDefault()
+	if Disable {
+		return utils.DownloadSpeedSet(ipSet)
+	}
+	if len(ipSet) <= 0 { // IP数组长度(IP数量) 大于 0 时才会继续下载测速
+		fmt.Println("\n[信息] 延迟测速结果 IP 数量为 0，跳过下载测速。")
+		return
+	}
+	testNum := TestCount
+	if len(ipSet) < TestCount || MinSpeed > 0 { // 如果IP数组长度(IP数量) 小于下载测速数量（-dn），则次数修正为IP数
+		testNum = len(ipSet)
+	}
+
+	fmt.Printf("开始下载测速（下载速度下限：%.2f MB/s，下载测速数量：%d，下载测速队列：%d）：\n", MinSpeed, TestCount, testNum)
+	bar := utils.NewBar(TestCount)
+	for i := 0; i < testNum; i++ {
+		speed := downloadHandler(ipSet[i].IP)
+		ipSet[i].DownloadSpeed = speed
+		// 在每个 IP 下载测速后，以 [下载速度下限] 条件过滤结果
+		if speed >= MinSpeed*1024*1024 {
+			bar.Grow(1)
+			speedSet = append(speedSet, ipSet[i]) // 高于下载速度下限时，添加到新数组中
+			if len(speedSet) == TestCount {       // 凑够满足条件的 IP 时（下载测速数量 -dn），就跳出循环
+				break
+			}
+		}
+	}
+	bar.Done()
+	if len(speedSet) == 0 { // 没有符合速度限制的数据，返回所有测试数据
+		speedSet = utils.DownloadSpeedSet(ipSet)
+	}
+	// 按速度排序
+	sort.Sort(speedSet)
+	return
+}
+
+func getDialContext(ip *net.IPAddr) func(ctx context.Context, network, address string) (net.Conn, error) {
+	fakeSourceAddr := ip.String() + ":443"
+	if IPv6 { // IPv6 需要加上 []
+		fakeSourceAddr = "[" + ip.String() + "]:443"
+	}
+	return func(ctx context.Context, network, address string) (net.Conn, error) {
+		return (&net.Dialer{}).DialContext(ctx, network, fakeSourceAddr)
+	}
+}
+
+// return download Speed
+func downloadHandler(ip *net.IPAddr) float64 {
+	client := &http.Client{
+		Transport: &http.Transport{DialContext: getDialContext(ip)},
+		Timeout:   Timeout,
+	}
+	response, err := client.Get(URL)
+	if err != nil {
+		return 0.0
+	}
+	defer response.Body.Close()
+	if response.StatusCode != 200 {
+		return 0.0
+	}
+	timeStart := time.Now()
+	timeEnd := timeStart.Add(Timeout)
+
+	contentLength := response.ContentLength
+	buffer := make([]byte, bufferSize)
+
+	var (
+		contentRead     int64 = 0
+		timeSlice             = Timeout / 100
+		timeCounter           = 1
+		lastContentRead int64 = 0
+	)
+
+	var nextTime = timeStart.Add(timeSlice * time.Duration(timeCounter))
+	e := ewma.NewMovingAverage()
+
+	for contentLength != contentRead {
+		currentTime := time.Now()
+		if currentTime.After(nextTime) {
+			timeCounter++
+			nextTime = timeStart.Add(timeSlice * time.Duration(timeCounter))
+			e.Add(float64(contentRead - lastContentRead))
+			lastContentRead = contentRead
+		}
+		if currentTime.After(timeEnd) {
+			break
+		}
+		bufferRead, err := response.Body.Read(buffer)
+		if err != nil {
+			if err != io.EOF {
+				break
+			}
+			e.Add(float64(contentRead-lastContentRead) / (float64(nextTime.Sub(currentTime)) / float64(timeSlice)))
+		}
+		contentRead += int64(bufferRead)
+	}
+	return e.Value() / (Timeout.Seconds() / 120)
+
+}

task/ip.go

@@ -0,0 +1,156 @@
+package task
+
+import (
+	"bufio"
+	"log"
+	"math/rand"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const defaultInputFile = "ip.txt"
+
+var (
+	// IPv6 IP version is 6
+	IPv6 = false
+	// TestAll test all ip
+	TestAll = false
+	// IPFile is the filename of IP Rangs
+	IPFile = defaultInputFile
+)
+
+func randIPEndWith(num byte) byte {
+	rand.Seed(time.Now().UnixNano())
+	return byte(rand.Intn(int(num)))
+}
+
+type IPRanges struct {
+	ips     []*net.IPAddr
+	mask    string
+	firstIP net.IP
+	ipNet   *net.IPNet
+}
+
+func newIPRanges() *IPRanges {
+	return &IPRanges{
+		ips: make([]*net.IPAddr, 0),
+	}
+}
+
+func (r *IPRanges) fixIP(ip string) string {
+	// 如果不含有 '/' 则代表不是 IP 段，而是一个单独的 IP，因此需要加上 /32 /128 子网掩码
+	if i := strings.IndexByte(ip, '/'); i < 0 {
+		r.mask = "/32"
+		if IPv6 {
+			r.mask = "/128"
+		}
+		ip += r.mask
+	} else {
+		r.mask = ip[i:]
+	}
+	return ip
+}
+
+func (r *IPRanges) parseCIDR(ip string) {
+	var err error
+	if r.firstIP, r.ipNet, err = net.ParseCIDR(r.fixIP(ip)); err != nil {
+		log.Fatalln("ParseCIDR err", err)
+	}
+}
+
+func (r *IPRanges) appendIPv4(d byte) {
+	r.appendIP(net.IPv4(r.firstIP[12], r.firstIP[13], r.firstIP[14], d))
+}
+
+func (r *IPRanges) appendIP(ip net.IP) {
+	r.ips = append(r.ips, &net.IPAddr{IP: ip})
+}
+
+// 返回第四段 ip 的最小值及可用数目
+func (r *IPRanges) getIPRange() (minIP, hosts byte) {
+	minIP = r.firstIP[15] & r.ipNet.Mask[3] // IP 第四段最小值
+
+	// 根据子网掩码获取主机数量
+	m := net.IPv4Mask(255, 255, 255, 255)
+	for i, v := range r.ipNet.Mask {
+		m[i] ^= v
+	}
+	total, _ := strconv.ParseInt(m.String(), 16, 32) // 总可用 IP 数
+	if total > 255 {                                 // 矫正 第四段 可用 IP 数
+		hosts = 255
+		return
+	}
+	if total == 0 {
+		hosts = 1
+		return
+	}
+	hosts = byte(total)
+	return
+}
+
+func (r *IPRanges) chooseIPv4() {
+	minIP, hosts := r.getIPRange()
+	for r.ipNet.Contains(r.firstIP) {
+		if TestAll { // 如果是测速全部 IP
+			for i := 0; i <= int(hosts); i++ { // 遍历 IP 最后一段最小值到最大值
+				r.appendIPv4(byte(i) + minIP)
+			}
+		} else { // 随机 IP 的最后一段 0.0.0.X
+			r.appendIPv4(minIP + randIPEndWith(hosts))
+		}
+		r.firstIP[14]++ // 0.0.(X+1).X
+		if r.firstIP[14] == 0 {
+			r.firstIP[13]++ // 0.(X+1).X.X
+			if r.firstIP[13] == 0 {
+				r.firstIP[12]++ // (X+1).X.X.X
+			}
+		}
+	}
+}
+
+func (r *IPRanges) chooseIPv6() {
+	var tempIP uint8
+	for r.ipNet.Contains(r.firstIP) {
+		//fmt.Println(firstIP)
+		//fmt.Println(firstIP[0], firstIP[1], firstIP[2], firstIP[3], firstIP[4], firstIP[5], firstIP[6], firstIP[7], firstIP[8], firstIP[9], firstIP[10], firstIP[11], firstIP[12], firstIP[13], firstIP[14], firstIP[15])
+		if r.mask != "/128" {
+			r.firstIP[15] = randIPEndWith(255) // 随机 IP 的最后一段
+			r.firstIP[14] = randIPEndWith(255) // 随机 IP 的最后一段
+		}
+		targetIP := make([]byte, len(r.firstIP))
+		copy(targetIP, r.firstIP)
+		r.appendIP(targetIP)
+		for i := 13; i >= 0; i-- {
+			tempIP = r.firstIP[i]
+			r.firstIP[i] += randIPEndWith(255)
+			if r.firstIP[i] >= tempIP {
+				break
+			}
+		}
+	}
+}
+
+func loadIPRanges() []*net.IPAddr {
+	if IPFile == "" {
+		IPFile = defaultInputFile
+	}
+	file, err := os.Open(IPFile)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+	ranges := newIPRanges()
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		ranges.parseCIDR(scanner.Text())
+		if IPv6 {
+			ranges.chooseIPv6()
+			continue
+		}
+		ranges.chooseIPv4()
+	}
+	return ranges.ips
+}

task/tcping.go

@@ -0,0 +1,137 @@
+package task
+
+import (
+	"fmt"
+	"net"
+	"sort"
+	"sync"
+	"time"
+
+	"CloudflareSpeedTest/utils"
+)
+
+const (
+	tcpConnectTimeout = time.Second * 1
+	maxRoutine        = 1000
+	defaultRoutines   = 200
+	defaultPort       = 443
+	defaultPingTimes  = 4
+)
+
+var (
+	Routines      = defaultRoutines
+	TCPPort   int = defaultPort
+	PingTimes int = defaultPingTimes
+)
+
+type Ping struct {
+	wg      *sync.WaitGroup
+	m       *sync.Mutex
+	ips     []*net.IPAddr
+	csv     utils.PingDelaySet
+	control chan bool
+	bar     *utils.Bar
+}
+
+func checkPingDefault() {
+	if Routines <= 0 {
+		Routines = defaultRoutines
+	}
+	if TCPPort <= 0 || TCPPort >= 65535 {
+		TCPPort = defaultPort
+	}
+	if PingTimes <= 0 {
+		PingTimes = defaultPingTimes
+	}
+}
+
+func NewPing() *Ping {
+	checkPingDefault()
+	ips := loadIPRanges()
+	return &Ping{
+		wg:      &sync.WaitGroup{},
+		m:       &sync.Mutex{},
+		ips:     ips,
+		csv:     make(utils.PingDelaySet, 0),
+		control: make(chan bool, Routines),
+		bar:     utils.NewBar(len(ips)),
+	}
+}
+
+func (p *Ping) Run() utils.PingDelaySet {
+	if len(p.ips) == 0 {
+		return p.csv
+	}
+	ipVersion := "IPv4"
+	if IPv6 { // IPv6 模式判断
+		ipVersion = "IPv6"
+	}
+	fmt.Printf("开始延迟测速（模式：TCP %s，端口：%d，平均延迟上限：%v ms，平均延迟下限：%v ms)\n", ipVersion, TCPPort, utils.InputMaxDelay.Milliseconds(), utils.InputMinDelay.Milliseconds())
+	for _, ip := range p.ips {
+		p.wg.Add(1)
+		p.control <- false
+		go p.start(ip)
+	}
+	p.wg.Wait()
+	p.bar.Done()
+	sort.Sort(p.csv)
+	return p.csv
+}
+
+func (p *Ping) start(ip *net.IPAddr) {
+	defer p.wg.Done()
+	p.tcpingHandler(ip)
+	<-p.control
+}
+
+//bool connectionSucceed float32 time
+func (p *Ping) tcping(ip *net.IPAddr) (bool, time.Duration) {
+	startTime := time.Now()
+	fullAddress := fmt.Sprintf("%s:%d", ip.String(), TCPPort)
+	//fmt.Println(ip.String())
+	if IPv6 { // IPv6 需要加上 []
+		fullAddress = fmt.Sprintf("[%s]:%d", ip.String(), TCPPort)
+	}
+	conn, err := net.DialTimeout("tcp", fullAddress, tcpConnectTimeout)
+	if err != nil {
+		return false, 0
+	}
+	defer conn.Close()
+	duration := time.Since(startTime)
+	return true, duration
+}
+
+//pingReceived pingTotalTime
+func (p *Ping) checkConnection(ip *net.IPAddr) (recv int, totalDelay time.Duration) {
+	for i := 0; i < PingTimes; i++ {
+		if ok, delay := p.tcping(ip); ok {
+			recv++
+			totalDelay += delay
+		}
+	}
+	return
+}
+
+func (p *Ping) appendIPData(data *utils.PingData) {
+	p.m.Lock()
+	defer p.m.Unlock()
+	p.csv = append(p.csv, utils.CloudflareIPData{
+		PingData: data,
+	})
+}
+
+// handle tcping
+func (p *Ping) tcpingHandler(ip *net.IPAddr) {
+	recv, totalDlay := p.checkConnection(ip)
+	p.bar.Grow(1)
+	if recv == 0 {
+		return
+	}
+	data := &utils.PingData{
+		IP:       ip,
+		Sended:   PingTimes,
+		Received: recv,
+		Delay:    totalDlay / time.Duration(recv),
+	}
+	p.appendIPData(data)
+}

tcping.go

@@ -1,87 +0,0 @@
-package main
-
-import (
-	"net"
-	"strconv"
-	"sync"
-	"time"
-)
-
-const defaultTcpPort = 443
-const tcpConnectTimeout = time.Second * 1
-const failTime = 4
-
-//bool connectionSucceed float64 time
-func tcping(ip net.IPAddr) (bool, float64) {
-	startTime := time.Now()
-	conn, err := net.DialTimeout("tcp", ip.String()+":"+strconv.Itoa(defaultTcpPort), tcpConnectTimeout)
-	if err != nil {
-		return false, 0
-	} else {
-		var endTime = time.Since(startTime)
-		var duration = float64(endTime.Microseconds()) / 1000.0
-		_ = conn.Close()
-		return true, duration
-	}
-}
-
-//pingReceived pingTotalTime
-func checkConnection(ip net.IPAddr) (int, float64) {
-	pingRecv := 0
-	pingTime := 0.0
-	for i := 1; i <= failTime; i++ {
-		pingSucceed, pingTimeCurrent := tcping(ip)
-		if pingSucceed {
-			pingRecv++
-			pingTime += pingTimeCurrent
-		}
-	}
-	return pingRecv, pingTime
-}
-
-//return Success packetRecv averagePingTime specificIPAddr
-func tcpingHandler(ip net.IPAddr, pingCount int, progressHandler func(e progressEvent)) (bool, int, float64, net.IPAddr) {
-	ipCanConnect := false
-	pingRecv := 0
-	pingTime := 0.0
-	for !ipCanConnect {
-		pingRecvCurrent, pingTimeCurrent := checkConnection(ip)
-		if pingRecvCurrent != 0 {
-			ipCanConnect = true
-			pingRecv = pingRecvCurrent
-			pingTime = pingTimeCurrent
-		} else {
-			ip.IP[15]++
-			if ip.IP[15] == 0 {
-				break
-			}
-			break
-		}
-	}
-	if ipCanConnect {
-		progressHandler(AvailableIPFound)
-		for i := failTime; i < pingCount; i++ {
-			pingSuccess, pingTimeCurrent := tcping(ip)
-			progressHandler(NormalPing)
-			if pingSuccess {
-				pingRecv++
-				pingTime += pingTimeCurrent
-			}
-		}
-		return true, pingRecv, pingTime / float64(pingRecv), ip
-	} else {
-		progressHandler(NoAvailableIPFound)
-		return false, 0, 0, net.IPAddr{}
-	}
-}
-
-func tcpingGoroutine(wg *sync.WaitGroup, mutex *sync.Mutex, ip net.IPAddr, pingCount int, csv *[][]string, control chan bool, progressHandler func(e progressEvent)) {
-	defer wg.Done()
-	success, pingRecv, pingTimeAvg, currentIP := tcpingHandler(ip, pingCount, progressHandler)
-	if success {
-		mutex.Lock()
-		*csv = append(*csv, []string{currentIP.String(), strconv.Itoa(pingRecv), strconv.FormatFloat(pingTimeAvg, 'f', 4, 64)})
-		mutex.Unlock()
-	}
-	<-control
-}

utils/csv.go

@@ -0,0 +1,166 @@
+package utils
+
+import (
+	"encoding/csv"
+	"fmt"
+	"log"
+	"net"
+	"os"
+	"strconv"
+	"time"
+)
+
+const (
+	defaultOutput = "result.csv"
+	maxDelay      = 9999 * time.Millisecond
+	minDelay      = 0 * time.Millisecond
+)
+
+var (
+	InputMaxDelay = maxDelay
+	InputMinDelay = minDelay
+	Output        = defaultOutput
+	PrintNum      = 10
+)
+
+// 是否打印测试结果
+func NoPrintResult() bool {
+	return PrintNum == 0
+}
+
+// 是否输出到文件
+func noOutput() bool {
+	return Output == "" || Output == " "
+}
+
+type PingData struct {
+	IP       *net.IPAddr
+	Sended   int
+	Received int
+	Delay    time.Duration
+}
+
+type CloudflareIPData struct {
+	*PingData
+	recvRate      float32
+	DownloadSpeed float64
+}
+
+func (cf *CloudflareIPData) getRecvRate() float32 {
+	if cf.recvRate == 0 {
+		pingLost := cf.Sended - cf.Received
+		cf.recvRate = float32(pingLost) / float32(cf.Sended)
+	}
+	return cf.recvRate
+}
+
+func (cf *CloudflareIPData) toString() []string {
+	result := make([]string, 6)
+	result[0] = cf.IP.String()
+	result[1] = strconv.Itoa(cf.Sended)
+	result[2] = strconv.Itoa(cf.Received)
+	result[3] = strconv.FormatFloat(float64(cf.getRecvRate()), 'f', 2, 32)
+	result[4] = strconv.FormatFloat(cf.Delay.Seconds()*1000, 'f', 2, 32)
+	result[5] = strconv.FormatFloat(cf.DownloadSpeed/1024/1024, 'f', 2, 32)
+	return result
+}
+
+func ExportCsv(data []CloudflareIPData) {
+	if noOutput() || len(data) == 0 {
+		return
+	}
+	fp, err := os.Create(Output)
+	if err != nil {
+		log.Fatalf("创建文件[%s]失败：%v", Output, err)
+		return
+	}
+	defer fp.Close()
+	w := csv.NewWriter(fp) //创建一个新的写入文件流
+	_ = w.Write([]string{"IP 地址", "已发送", "已接收", "丢包率", "平均延迟", "下载速度 (MB/s)"})
+	_ = w.WriteAll(convertToString(data))
+	w.Flush()
+}
+
+func convertToString(data []CloudflareIPData) [][]string {
+	result := make([][]string, 0)
+	for _, v := range data {
+		result = append(result, v.toString())
+	}
+	return result
+}
+
+type PingDelaySet []CloudflareIPData
+
+func (s PingDelaySet) FilterDelay() (data PingDelaySet) {
+	if InputMaxDelay > maxDelay || InputMinDelay < minDelay {
+		return s
+	}
+	for _, v := range s {
+		if v.Delay > InputMaxDelay { // 平均延迟上限
+			break
+		}
+		if v.Delay < InputMinDelay { // 平均延迟下限
+			continue
+		}
+		data = append(data, v) // 延迟满足条件时，添加到新数组中
+	}
+	return
+}
+
+func (s PingDelaySet) Len() int {
+	return len(s)
+}
+
+func (s PingDelaySet) Less(i, j int) bool {
+	iRate, jRate := s[i].getRecvRate(), s[j].getRecvRate()
+	if iRate != jRate {
+		return iRate < jRate
+	}
+	return s[i].Delay < s[j].Delay
+}
+
+func (s PingDelaySet) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+// 下载速度排序
+type DownloadSpeedSet []CloudflareIPData
+
+func (s DownloadSpeedSet) Len() int {
+	return len(s)
+}
+
+func (s DownloadSpeedSet) Less(i, j int) bool {
+	return s[i].DownloadSpeed > s[j].DownloadSpeed
+}
+
+func (s DownloadSpeedSet) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s DownloadSpeedSet) Print(ipv6 bool) {
+	if NoPrintResult() {
+		return
+	}
+	if len(s) <= 0 { // IP数组长度(IP数量) 大于 0 时继续
+		fmt.Println("\n[信息] 完整测速结果 IP 数量为 0，跳过输出结果。")
+		return
+	}
+	dateString := convertToString(s) // 转为多维数组 [][]String
+	if len(dateString) < PrintNum {  // 如果IP数组长度(IP数量) 小于  打印次数，则次数改为IP数量
+		PrintNum = len(dateString)
+	}
+	headFormat := "%-16s%-5s%-5s%-5s%-6s%-11s\n"
+	dataFormat := "%-18s%-8s%-8s%-8s%-10s%-15s\n"
+	if ipv6 { // IPv6 太长了，所以需要调整一下间隔
+		headFormat = "%-40s%-5s%-5s%-5s%-6s%-11s\n"
+		dataFormat = "%-42s%-8s%-8s%-8s%-10s%-15s\n"
+	}
+	fmt.Printf(headFormat, "IP 地址", "已发送", "已接收", "丢包率", "平均延迟", "下载速度 (MB/s)")
+	for i := 0; i < PrintNum; i++ {
+		fmt.Printf(dataFormat, dateString[i][0], dateString[i][1], dateString[i][2], dateString[i][3], dateString[i][4], dateString[i][5])
+	}
+	if !noOutput() {
+		fmt.Printf("\n完整测速结果已写入 %v 文件，可使用记事本/表格软件查看。", Output)
+	}
+}

utils/progress.go

@@ -0,0 +1,19 @@
+package utils
+
+import "github.com/cheggaaa/pb/v3"
+
+type Bar struct {
+	pb *pb.ProgressBar
+}
+
+func NewBar(count int) *Bar {
+	return &Bar{pb.Simple.Start(count)}
+}
+
+func (b *Bar) Grow(num int) {
+	b.pb.Add(num)
+}
+
+func (b *Bar) Done() {
+	b.pb.Finish()
+}