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Kujenga WebSocket Seva ya Msingi na Node.js

Programu real-time ya gumzo ni mfano bora wa jinsi ya kutumia WebSocket ili Node.js kuunda uzoefu shirikishi na unaovutia wa mtumiaji. Katika makala haya, tutachunguza jinsi ya kuunda real-time programu ya gumzo kwa kutumia WebSocket na Node.js.

Hatua ya 1: Kuweka Mazingira

Kwanza, hakikisha kuwa umesakinisha Node.js kwenye kompyuta yako. Unda folda mpya ya mradi wako na uingie ndani yake kwa kutumia Terminal au Command Prompt.

Hatua ya 2: Kusakinisha WebSocket Maktaba

Kama hapo awali, tumia maktaba ya "ws" kusakinisha WebSocket maktaba:

npm install ws

Hatua ya 3: Kuunda WebSocket Seva

Unda faili iliyopewa jina server.js  na uandike nambari ifuatayo:

// Import the WebSocket library  
const WebSocket = require('ws');  
  
// Create a WebSocket server  
const server = new WebSocket.Server({ port: 8080 });  
  
// List of connections(clients)  
const clients = new Set();  
  
// Handle new connections  
server.on('connection',(socket) => {  
    console.log('Client connected.');  
  
    // Add connection to the list  
    clients.add(socket);  
  
    // Handle incoming messages from the client  
    socket.on('message',(message) => {  
        // Send the message to all other connections  
        for(const client of clients) {  
            if(client !== socket) {  
                client.send(message);  
            }  
        }  
    });  
  
    // Handle connection close  
    socket.on('close',() => {  
        console.log('Client disconnected.');  
        // Remove the connection from the list  
        clients.delete(socket);  
    });  
});

Hatua ya 4: Kuunda Kiolesura cha Mtumiaji(Mteja)

Unda faili iliyopewa jina index.html na uandike nambari ifuatayo:

<!DOCTYPE html>  
<html>  
<head>  
    <title>Real-Time Chat</title>  
</head>  
<body>  
    <input type="text" id="message" placeholder="Type a message">  
    <button onclick="send()">Send</button>  
    <div id="chat"></div>  
      
    <script>  
        const socket = new WebSocket('ws://localhost:8080');  
        socket.onmessage =(event) => {  
            const chat = document.getElementById('chat');  
            chat.innerHTML += '<p>' + event.data + '</p>';  
        };  
  
        function send() {  
            const messageInput = document.getElementById('message');  
            const message = messageInput.value;  
            socket.send(message);  
            messageInput.value = '';  
        }  
    </script>  
</body>  
</html>

Hatua ya 5: Kuendesha Seva na Kufungua Kivinjari

Kwenye Terminal, endesha amri ifuatayo ili kuanza WebSocket seva:

node server.js

Fungua kivinjari cha wavuti na uende kwenye " http://localhost:8080 " ili kutumia real-time programu ya gumzo.

 

Hitimisho

Hongera! Umefanikiwa kuunda real-time programu ya gumzo kwa kutumia WebSocket na Node.js. Programu hii inaruhusu watumiaji kuingiliana na kutuma/kupokea ujumbe katika real-time. Unaweza kuendelea kupanua na kubinafsisha programu hii ili kuunda vipengele mbalimbali vya kusisimua!