Problem with router and example code not working?

[ata1704]

Hi. I tried to implement express-ws in my existing project. After it failed it tried the example in a new project. I even done it all in one file and it's not working:

var express = require('express');
var app = express();
var expressWs = require("express-ws")(app);

app.ws('/echo', function(ws, req) {
    ws.on('message', function(msg) {
        ws.send(msg);
    });
});

var router = express.Router();

router.ws('/echo', function(ws, req) {
    ws.on('message', function(msg) {
        ws.send(msg);
    });
});

app.use("/ws-stuff", router);

It's always telling me that "ws" on "router.ws" is an unresolved function.

[ruokid]

显然

var expressWs = require("express-ws")(app);

只适用于app这个变量

[pepesoriagarcia99]

Hello, I have the same problem. There is no way to apply on the Router

[wistoft]

This could be caused by express-ws adding the ws function to one version of express in node_modules, and the script getting another version of express from node_modules.

This way app.ws will work, because express.ws gets app as parameter, but router.ws will not work, because it's another version of express.

The solution would be to ensure, there's only one version of express in the codebase.