koa-websocket
Koa v2 is now the default. For Koa v1 support install with koa-websocket@2 and see the
legacybranch.
Supports ws:// and wss://
Installation
npm install koa-websocket
Usage
const Koa = require('koa'),
route = require('koa-route'),
websockify = require('koa-websocket');
const app = websockify(new Koa());
// Regular middleware
// Note it's app.ws.use and not app.use
app.ws.use(function(ctx, next) {
// return `next` to pass the context (ctx) on to the next ws middleware
return next(ctx);
});
// Using routes
app.ws.use(route.all('/test/:id', function (ctx) {
// `ctx` is the regular koa context created from the `ws` onConnection `socket.upgradeReq` object.
// the websocket is added to the context on `ctx.websocket`.
ctx.websocket.send('Hello World');
ctx.websocket.on('message', function(message) {
// do something with the message from client
console.log(message);
});
}));
app.listen(3000);
Example with Let's Encrypt (the Greenlock package):
const Koa = require('koa');
const greenlock = require('greenlock-express');
const websockify = require('koa-websocket');
const le = greenlock.create({
// all your sweet Let's Encrypt options here
});
// the magic happens right here
const app = websockify(new Koa(), wsOptions, le.httpsOptions);
app.ws.use((ctx) => {
// the websocket is added to the context as `ctx.websocket`.
ctx.websocket.on('message', function(message) {
// do something
});
});
app.listen(3000);
With custom websocket options.
const Koa = require('koa'),
route = require('koa-route'),
websockify = require('koa-websocket');
const wsOptions = {};
const app = websockify(new Koa(), wsOptions);
app.ws.use(route.all('/', (ctx) => {
// the websocket is added to the context as `ctx.websocket`.
ctx.websocket.on('message', function(message) {
// print message from the client
console.log(message);
});
}));
app.listen(3000);
API
websockify(KoaApp, [WebSocketOptions], [httpsOptions])
The WebSocket options object just get passed right through to the new WebSocketServer(options) call.
The optional HTTPS options object gets passed right into https.createServer(options). If the HTTPS options arepassed in, koa-websocket will use the built-in Node HTTPS server to provide support for the wss:// protocol.
License
MIT
-
最近在做运营侧中台项目的重构，目前的选型是 koa2+typescript。在实际生产中，切实体会到了 typescript 类型带来的好处。 为了更形象说明 typescript 的优势，还是先来看一个场景吧： BUG 现场 作为一门灵活度特别大的语言，坏处就是：复杂逻辑编写过程中，数据结构信息可能由于逻辑复杂、人员变更等情况而丢失，从而写出来的代码含有隐含错误。 比如这次我在给自己的博客编写
-
使用koa2.x koa-websocket vue2.x 1.首先 用koa创建websocket服务 /* 实例化外部依赖 */ var Koa = require("koa"); var WebSocket = require("koa-websocket"); var app = WebSocket(new Koa()); var ctxs = []; //用来保存ctx对象 用以广播信
-
先看看视频: websocket 广播效果 服务端程序(websocket.js): var ws = require("nodejs-websocket"); function now() { return new Date().toLocaleString(); } var n = 0; var BC = 0; function broadcast(server) {
-
Koa art-template view render middleware. support all feature of art-template. Install npm install --save art-template npm install --save koa-art-template Example const Koa = require('koa'); const ren
-
koa是Express的下一代基于Node.js的web框架，目前有1.x和2.0两个版本。 历史 1. Express Express是第一代最流行的web框架，它对Node.js的http进行了封装，用起来如下： var express = require('express'); var app = express(); app.get('/', function (req, res) {
-
Koa 是下一代的 Node.js 的 Web 框架。由 Express 团队设计。旨在提供一个更小型、更富有表现力、更可靠的 Web 应用和 API 的开发基础。 Koa可以通过生成器摆脱回调，极大地改进错误处理。Koa核心不绑定任何中间件，但提供了优雅的一组可以快速和愉悦地编写服务器应用的方法。 示例代码： var koa = require('koa');var app = koa();//
-
Koa - HelloWorld 以上便是全部了，我们重点来看示例，我们只注册一个中间件, Hello Worler Server： <?php $app = new Application(); // ... $app->υse(function(Context $ctx) { $ctx->status = 200; $ctx->body = "<h1>Hello Worl
-
koa-log4js A wrapper for log4js-node which support Koa logger middleware.Log message is forked from Express (Connect) logger file. Note This branch is use to Koa v2.x.To use Koa v0.x & v1.x, please ch
-
koa-rudy 环境 node -v >=6.9.0pm2 启动 npm install npm run dev 开发环境 npm run dev || test || prod 接口测试 npm run mocha 推荐开发工具 vscode 实现 支持 async/await MVC架构（middleware-view-controller） RESTful a