Javascript 如何从路由请求发送ws消息
我一直在尝试创建一个应用程序,使用电报机器人,快速服务器和反应应用程序。因此,我需要创建一个从telegram bot到express的POST请求,而express将POST数据发送到websocket连接:Javascript 如何从路由请求发送ws消息,javascript,node.js,express,websocket,Javascript,Node.js,Express,Websocket,我一直在尝试创建一个应用程序,使用电报机器人,快速服务器和反应应用程序。因此,我需要创建一个从telegram bot到express的POST请求,而express将POST数据发送到websocket连接: const express = require("express"); const app = express(); const expressWs = require("express-ws")(app); // handles bot request app.post("/requ
const express = require("express");
const app = express();
const expressWs = require("express-ws")(app);
// handles bot request
app.post("/request", (req, res) => {
playlist.push(req.body.url);
res.status(200).send({ message: "video is added to playlist" });
});
// after handling requst data must go here and send ws message to client side
app.ws("/echo", (ws, req) => {
ws.on("message", msg => {
ws.send(`msg is = ${msg}`);
});
});
我做得对吗?如果是的话,在app.post route处理请求后如何调用ws.send from?根据我对您的问题的理解,以下是您的代码的更新版本,完全符合您的要求 我用
ws
替换了expressws
包,因为这对于您的用例来说已经足够了
express服务器在端口8080上运行,而websocket服务器在端口8081上运行,因为它们是不同的协议,不会在同一端口上运行(您可以让它工作,但我不推荐它)
使用
curl-d'url通过curl进行测试=https://example.com/examplesong'localhost:8080/request
我有一个客户端连接到了ws://localhost:8081
,一切看起来都很好。可能有多个客户端连接到/echo
端点,这与/request
端点无关。如果什么您试图做的是将post请求的内容广播到连接的客户端,然后您必须监视到post端点的请求,并将该请求发送到这些客户端。您可以改用ws-package。
const express = require("express");
const Websocket = require('ws');
const app = express();
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
const wss = new Websocket.Server({ port: 8081 });
wss.on('connection', (ws) => {
console.log('One client connected');
ws.on("message", msg => {
ws.send(`msg is = ${msg}`);
});
})
// handles bot request
app.post("/request", (req, res) => {
// Broadcast URL to connected ws clients
wss.clients.forEach((client) => {
// Check that connect are open and still alive to avoid socket error
if (client.readyState === Websocket.OPEN) {
client.send(url);
}
});
res.status(200).send({ message: "video is added to playlist" });
});
app.listen(8080, () => {
console.log('Express listening on 8080');
console.log('Websocket on 8081');
});