创建并配置App Xcode → File → New → Project → iOS → App Product Name: DemoVPN Interface: SwiftUI Language: Swift 打开 Project（左侧导航），选择App target → Signing & Capabilities → 点击 “+ Capability” → 依次添加： App Groups → 点击 + 输入group.com.yourcompany.DemoVPN 创建并配置Extension File → New → Target → Network Extension Product Name: PacketTunnel Provider Type: Packet Tunnel 打开 Project（左侧导航），选择Extension target → Signing & Capabilities → 点击 “+ Capability” → 依次添加： App Groups → 点击 + 输入group.com.yourcompany.DemoVPN Network Extensions → 勾

创建CA证书 生成rootCA私钥: rootCA-key.pem openssl genrsa -out rootCA-key.pem 2048 使用上面的私钥，生成rootCA证书: rootCA.pem openssl req -x509 -new -nodes -key rootCA-key.pem -sha256 -days 3650 -out rootCA.pem -subj "/O=Organization/OU=OrgUnit/CN=CommonName" 代理服务需要根据该rootCA证书生成域名证书 要实现中间人代理，该CA证书需要同时被连接代理服务器的客户端信任。 创建域名证书 生成域名私钥: _wildcard.example.org-key.pem openssl genrsa -out _wildcard.example.org-key.pem 2048 创建证书签名请求: _wildcard.example.org.csr openssl req -new -key _wildcard.example.org-key.pem -out _wildcard.example.org.

在当前目录创建虚拟环境 conda create --prefix ./.venv python=3.12 激活当前目录下虚拟环境 conda activate ./.venv 查看当前激活的虚拟环境 conda env list 退出当前目录下虚拟环境 conda deactivate 安装python依赖包(requirements.txt) pip install -r /path/to/requirements.txt

Ubuntu下安装配置Trojan服务 sudo apt-get update sudo apt-get install trojan 配置文件路径: /etc/trojan/config.json local_port: 服务端监听端口，默认443 password: 密码设置 ssl.cert: SSL证书 ssl.key: SSL证书私钥 //codefile:/etc/trojan/config.json { "run_type": "server", "local_addr": "0.0.0.0", "local_port": 443, "remote_addr": "127.0.0.1", "remote_port": 80, "password": [ "password" ], "log_level": 1, "ssl": { "cert":"/path/to/cert", "key": "/path/to/key", "key_password": "", "cipher": "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256

虚拟环境 python3 -m venv .venv # create virtual environment source .venv/bin/activate # load virtual environment 安装依赖 pip install -r requirements.txt windows激活虚拟环境报错activate : File \.venv\Scripts\Activate.ps1 cannot be loaded because running scripts is disabled on this system. Set-ExecutionPolicy -Scope CurrentUser RemoteSigned

下载M3U8视频并存为MP4格式 ffmpeg -i [https://host/path/to/xxx.m3u8] [output.mp4] 将MP3格式转化为M3U8 ffmpeg -i [input.mp3] -c:a libmp3lame -b:a 128k -map 0:0 -f segment -segment_time 10 -segment_list [output.m3u8] -segment_format mpegts [%03d.ts] 将MP4格式转化为M3U8 ffmpeg -i [input.mp4] -f segment -segment_time 10 -segment_format mpegts -segment_list [output.m3u8] -c copy -bsf:v h264_mp4toannexb -map 0 [%04d.ts] 转成H264编码 ffmpeg -i [input.mp4] -c:v libx264 -preset faster -crf 32 -c:a copy [output.mp4]

安装 安装chromium npx playwright install chromium 仅安装chromium shell及系统依赖 npx playwright install --with-deps --only-shell chromium

大小写转换 转换为大写：Ctrl+Shift+u 转换为小写：Ctrl+Shift+l

图片指定宽长比 <div class="image"> <div> <img src="xxx" /> </div> </div> padding-top计算百分比的基数是容器的width，示例中宽高比为4:3 percentage: The size of the padding as a percentage, relative to the inline size (width in a horizontal language, defined by writing-mode) of the containing block. Must be nonnegative. .image { width: 100%; padding-top: calc(3 / 4 * 100%); /* calc(Height / Width * Percentage%) */ position: relative; overflow: hidden; div { position: absolute; top: 0; left: 0; bottom: 0; right: 0; img { object-fit: cover

You can generate a self-signed certificate for development purposes using tools like OpenSSL or PowerShell on Windows, or even .NET's own APIs if you’re building the certificate within your .NET code. Here’s how to generate a self-signed certificate using these methods: Method 1: Generate a Self-Signed Certificate with OpenSSL Prerequisites: Make sure you have OpenSSL installed on your system. Generate a Private Key: openssl genpkey -algorithm RSA -out private.key -pkeyopt rsa_keygen_bits:2048 Generate a Ce