为什么模块C收不到socket io "hi"事件？

Question

如何为不同的套接字路径调用不同的模块？这是服务器代码：

require('dotenv-flow').config();
const express = require('express');
const app = express();
const http =require('http');
const httpServer= http.createServer(app);
const io = require('socket.io')(httpServer);

let C=require('./C');
let c=new C(io.of("/c"));

class C {
    constructor(socket) {
        socket.on("connection",()=>{
            console.log("Connection to /c");
        });
        socket.on("hi", (peerName, calllBack) => {
            console.log("Received say hi from " + peerName + ".");
        });
    }
}
module.exports = C;

客户端代码：

import { useEffect} from "react";
import io from "socket.io-client";
export default function TestSocket() {
    useEffect(() => {
        let peerName;
        let signalServerURL=process.env.REACT_APP_SOCKET_URL + "c";
        let sUsrAg = navigator.userAgent;
        if (sUsrAg.indexOf("Edg") > -1) {
            peerName = "Edge";
        } else {
            if (sUsrAg.indexOf("Chrome") > -1) {
                peerName = "Chrome";
            } else {
                if (sUsrAg.indexOf("Firefox") > -1) {
                    peerName = "Firefox";
                } else {
                    if (sUsrAg.indexOf("Safari") > -1) {
                        peerName = "Safari";
                    }
                }
            }
        }
        let socket = io(signalServerURL, {
            transports: ["websocket"],
        });
        socket.emit("hi", peerName, (response) => {
            console.log(response);
        });
    },[]);
   return (
        <></>
    )    
}

模块C可以接收connection事件，但是无法接收hi事件，为什么？除此之外，我想使用不同的 module/class 来处理不同的套接字路径。

例如

对于路径/b socket访问，我想使用模块B来处理。

对于路径/d socket访问，我想使用模块D来处理。

我该如何实施？

根据Philippe的回答，我修改了服务器代码如下：

require('dotenv-flow').config();
const express = require('express');
const app = express();
const http =require('http');
const httpServer= http.createServer(app);
const io = require('socket.io')(httpServer);

let C=require('./C');
let c=new C(io,"/c");

class C {
    constructor(io,path) {
         io.of(path).on("connection",socket=>{
           console.log("Connection to "+path);
           
           socket.on("hi", (peerName, calllBack) => {
            console.log("Received say hi from " + peerName + ".");
           });
         });
    }
}
module.exports = C;

有效！

Answer 1

连接成功后，socket-io returns你需要使用的socket。您可以尝试类似的操作：

constructor(io) {
    io.on("connection", (socket) => {
        console.log("Connection to /c " + socket.id);
        socket.on("hi", (peerName, calllBack) => {
            console.log("Received say hi from " + peerName + ".");
        });
    });
}

为什么模块C收不到socket io "hi"事件？

Why the module C does not receive the socket io "hi" event?

node.js

reactjs

express

socket.io