brew update更新的时候报错，LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54
fatal: 无法访问 'https://github.com/Homebrew/homebrew-cask/'：LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54
git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask fetch --unshallow
fatal: 无法访问 'https://github.com/Homebrew/homebrew-cask/'：Failed to connect to github.com port 443: Operation timed out
// 执行下面这句命令，更换为中科院的镜像： git clone git://mirrors.ustc.edu.cn/homebrew-cask.git/ /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask --depth=1 // 把homebrew-core的镜像地址也设为中科院的国内镜像 cd "$(brew --repo)" git remote set-url origin https://mirrors.ustc.edu.cn/brew.git cd "$(brew --repo)/Library/Taps/homebrew/homebrew-cask" git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git // 更新 brew update // 使用 brew install node