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The net module is Node.js’s built-in tool to work with TCP connections easily.
It lets you:
Think of it like this:
TCP = Rules of communication
net module = Your way to actually use those rules in code
No request-response limitation like HTTP; this is continuous communication.
Component | Role |
| Server | Waits for connections |
| Client | Initiates connection |
| Socket | Handles communication |
| const net = require('net'); const server = net.createServer((socket) => { console.log('Client connected'); socket.write('Hello from server'); }); server.listen(3000); |
| const net = require('net'); const client = net.createConnection({ port: 3000 }, () => { client.write('Hello Server'); }); |
The net module is what turns TCP from a concept into real, working communication in your app.
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What is the Net Module?
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