我使用express-ws在我的服务器和客户端浏览器之间发现了可靠的Websocket连接,从而发现了我的web服务器的示例代码。代码将开始在3000端口监听websocket连接。next()调用nodejs中的express-ws模块
var express = require('express');
var app = express();
var expressWs = require('express-ws')(app);
app.use(function (req, res, next) {
console.log('middleware');
req.testing = 'testing';
return next();
});
app.get('/', function(req, res, next){
console.log('get route', req.testing);
res.end();
});
app.ws('/', function(ws, req) {
ws.on('message', function(msg) {
console.log(msg);
});
console.log('socket', req.testing);
});
server.listen(3000);
express-websocket中next()API的用法是什么?