socket해서 푸쉬한것 입니다.

client/package.json

@@ -13,6 +13,7 @@
     "react-dom": "^17.0.1",
     "react-router-dom": "^5.2.0",
     "react-scripts": "4.0.1",
+    "socket.io-client": "^3.0.5",
     "web-vitals": "^0.2.4"
   },
   "scripts": {

client/src/Components/Chat.js

 import React from 'react';
-import { Form, Button } from 'react-bootstrap';
+import { Form, Button, Row } from 'react-bootstrap';
 
 
 function Chat(props) {
+  function handleChange(e) {
+    e.preventDefault()
+    props.setInner(e.target.value)
+    console.log(e.target.value)
+  }
+
+  function sendMsgCH(e) {
+    props.sendMsg(e)
+  }
+
   return (
     <div className="chat" id="chat" style={{ border: "2px solid", height: "300%", margin: "1%", borderColor: "#BDBDBD" }}>
       <Button variant="light" onClick={props.handleChatc} >{`<`}</Button>
+      <h2>현재 {props.roomName} 입니다.</h2>
+      {      props.chatmsg.map((value, index) => (
+        <Row key={index} className='ml-3'>
+          {props.roomName}에서 보낸 메세지 : {value}
+        </Row>
+      ))}
+
+      <Form onSubmit={sendMsgCH}>
+        <Form.Control name='msg' type='text' onChange={handleChange} />
+        <Button variant="primary" type="submit">전송</Button>
+      </Form>
+
       <Form>
         <Form.Group>
           <Form.Control type="text" />

client/src/Components/ClosedList.js

 import React, { useState } from 'react'
-import { ListGroup } from 'react-bootstrap';
+import { ListGroup, Row, Col } from 'react-bootstrap';
 
-function ClosedList() {
+function ClosedList(props) {
   const [list, setList] = useState([
     { room: '테스트 방1', memnum: 5, admin: '가영' },
     { room: '테스트 방2', memnum: 4, admin: '수현' }]
   );
+  function enterChatroomCH(e) {
+    const roomName = e.target.name
+    props.enterChatroom(roomName) // 각각의 room으로 들어가도록 설정해야 함
+    props.setRoomName(roomName)
+    props.clearChat()
+  }
+
   return (
     <div>
-      {list.map((list, index) =>
-        <ListGroup key={index}>
-          <ListGroup.Item action>
-            <h2>{list.room}</h2>
-          </ListGroup.Item>
-        </ListGroup>
-      )}
+      <Row>
+        {list.map((list, index) =>
+          <ListGroup key={index}>
+            <ListGroup.Item action onClick={enterChatroomCH} name={list.room}>
+              {list.room}
+            </ListGroup.Item>
+          </ListGroup>
+        )}
+      </Row>
+      <Col>
+
+      </Col>
     </div>
   )
 }

client/src/Pages/HomePage.js

-import React, { useState } from 'react';
+import React, { useState, useEffect } from 'react';
 import { Row, Col, Modal, Button, Navbar, Nav } from 'react-bootstrap';
 import Tabs from 'react-bootstrap/Tabs';
 import Tab from 'react-bootstrap/Tab';
@@ -7,12 +7,14 @@ import OpenList from '../Components/OpenList';
 import Chat from '../Components/Chat';
 import Menu from '../Components/Menu';
 // import styled from 'styled-components';
+import { io } from "socket.io-client";   //모듈 가져오기
 
 // const List = styled.div`
 //   background: #FFFAFA;
 // `
 const userName = "정연우";
 
+const socket = io();
 
 
 function Home() {
@@ -25,6 +27,51 @@ function Home() {
   const handleChatc = () => setChat(false);
   // variant="pills"
 
+  ///////////////////////////////////////////////////////////////
+  const [inner, setInner] = useState([''])
+  console.log('sendMsg2222', inner)
+  const [chatmsg, setChatmsg] = useState([inner])
+  const [roomName, setRoomName] = useState('dd')   //방 선택이 방1을 눌럿다 방2를 누르면 전체로 전송됨
+
+  function enterChatroom(roomName) {    //방 입장하기
+    socket.emit('joinRoom', roomName)
+    console.log(`joinRoom : ${roomName} 입장`)
+  }
+
+  const sendMsg = (e) => {
+    e.preventDefault()
+    console.log('sendMsg', inner)
+    console.log(roomName)
+    socket.emit("chat", {
+      roomName: roomName,
+      msg: inner
+    });
+  }
+
+  function clearChat() {
+    setChatmsg([])
+  }
+
+  useEffect(() => {
+    console.log('useeffect1')
+    socket.on('broadcast', (msg) => {
+
+      console.log('msg', msg)
+      console.log('inner :', inner)
+
+      setChat([...chatmsg, msg])
+    })
+    console.log('useeffect2', chat)
+  }, [chatmsg])
+  //////////////////////////////////////////////////////////
+
+
+
+
+
+
+
+
   return (
     <>
       <Menu />
@@ -32,7 +79,7 @@ function Home() {
         <Col className="list" md={5}>
           <Tabs defaultActiveKey="closed" id="uncontrolled-tab-example">
             <Tab eventKey="closed" title="내 채팅" onClick={handleChato} >
-              <ClosedList />
+              <ClosedList enterChatroom={enterChatroom} setRoomName={setRoomName} clearChat={clearChat} />
             </Tab>
             <Tab eventKey="open" title="공개방" >
               <OpenList />
@@ -40,7 +87,7 @@ function Home() {
           </Tabs>
         </Col>
         <Col style={{ padding: "0" }}>
-          {chat ? <Chat handleChatc={handleChatc} /> : null}
+          {chat ? <Chat handleChatc={handleChatc} sendMsg={sendMsg} setInner={setInner} chatmsg={chatmsg} roomName={roomName} /> : null}
 
           <Button variant="primary" onClick={handleShow} style={{ position: "fixed", bottom: "10px", right: "10px" }} >
             생성

package.json

@@ -6,10 +6,14 @@
   "type": "module",
   "dependencies": {
     "bcryptjs": "^2.4.3",
+    "body-parser": "^1.19.0",
+    "cors": "^2.8.5",
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.1",
     "mongoose": "^5.11.9",
     "nodemon": "^2.0.6",
+    "require-node": "^2.0.8",
+    "socket.io": "^3.0.5",
     "validator": "^13.5.2"
   },
   "devDependencies": {},

server/server.js

@@ -4,12 +4,50 @@ import userRouter from './routes/user.routes.js'
 import authRouter from './routes/auth.routes.js'
 import profileRouter from './routes/profile.routes.js'
 
+import cors from "cors";
+import bodyParser from "body-parser";
+import http from "http";
+import { Server } from 'socket.io';
+
+
 connectDb()
 
 const app = express()
 
-app.use(express.json())
+const server = http.createServer(app);
+
+const io = new Server(server)
+
+
+io.on("connection", (socket) => { // 기본 연결
+  console.log("socket connect ok", socket.id)
+
+
+  socket.on('joinRoom', (data) => { // joinRoom을 클라이언트가 emit했을 때
+    let roomName = data;
+    console.log(roomName, "방 입장")
+    socket.join(roomName); //클라이언트에서 data에 적힌 room으로 참여시킴
+
+  });
+
+  socket.on('chat', (data) => {
+    console.log(`chat실행 :`, data.roomName, data.msg)
+    io.to(data.roomName).emit('broadcast', data.msg); //roomName에 존재하는 모든 소켓들에게 
+  })
+
+  socket.on('disconnect', () => {
+    console.log('disconnected from server id=', socket.id)
+  })
+
+
+});
+
+// app.use(express.json())
 //이부분을 body 파싱함
+app.use(bodyParser.json());
+
+// app.use(cors());
+// app.use('/', indexRouter);
 //express가 req.body라는곳을 자동으로만들어서 json형식으로 보낸것을 객체형식으로 넣음
 //이부분 다음부터는 req.body라는 부분을 실행할 수 있음
 
@@ -19,9 +57,16 @@ app.use(profileRouter)
 //userRouter로 이동
 
 app.get('/', (req, res) => {
-    res.send('Hello World. 안녕하세요')
+  res.send('Hello World. 안녕하세요')
 })
 
 app.listen(3030, () => {
-    console.log('Listening on port 3030')
+  console.log('Listening on port 3030')
 })
+
+/////////////////////////////////////////////////////////
+
+
+
+
+// export default server