log('server is running at port 3000.'); }); 复制代码 除了这个示例外,比如像live-server库中也是利用send提供了静态文件托管服务。学会了基本使用,下面看看send静态文件托管服务的实现原理吧。 源码分析 send库对外暴露一个send方法,该方法内初始化一个SendStream类,SendStream类继承S
在Node.js中,当我们给前端返回一个静态文件的时候,我们通常会把文件先读进内容,然后通过socket接口写到底层,从而返回给前端。无论是一次性读取到内存还是使用流式的方式,都不可避免地要把数据从内核复制到用户层,再把数据复制到内核,这是一种低效的方式,因为多了无效的复制。在nginx中,可以通过sendfile指令提供效率...
Inside node js folder, open your local terminal and run the below command to install node modules. You can do the same in Visual studio code terminal by opening the project in Visual studio code Bash 複製 npm install Update the .env configuration for t...
attachments– An array of attachment objects (seeUsing attachmentsfor details). Attachments can be used forembedding imagesas well. A large majority of e-mails sent look a lot like this, using only a few basic fields: var mailData = { from: 'sender@server.com', to: 'receiver@sender.com...
APPLIES TO: SDK v3 .NET Typically, each message that a bot sends to the user directly relates to the user's prior input. In some cases, a bot may need to send the user a message that is not directly related to the current topic of conversation or...
How to send cloud-to-device messages from a back-end app and receive them on a device app using the Azure IoT SDKs for Node.js.
nodejs发送前数据转化在response.js中, res.send =functionsend(body) {varchunk =body;varencoding;varlen;varreq =this.req;vartype;//settingsvarapp =this.app;//allow status / bodyif(arguments.length === 2) {//res.send(body, status) backwards compatif(typeofarguments[0] !== 'number' &&...
在Node.js中,当我们给前端返回一个静态文件的时候,我们通常会把文件先读进内容,然后通过socket接口写到底层,从而返回给前端。无论是一次性读取到内存还是使用流式的方式,都不可避免地要把数据从内核复制到用…
letconfigOptions={host:"1.2.3.4",port:465,secure:true,tls:{// must provide server name, otherwise TLS certificate check will failservername:"example.com"}} I have an issue with TypeScript types Nodemailer has official support for Node.js only. For anything related to TypeScript, you need ...
Node.jsアプリの依存関係を初期化したら、次のステップとして任意のテキストエディタを開き、email-notifierディレクトリ内に3つの新しいファイル(index.js、.env、subscribers.json)を作成します。 index.jsファイルは継続的に実行され、スニーカーが一定のしきい値を下回ると登録者に通知します...