> For the complete documentation index, see [llms.txt](https://easonwang.gitbook.io/web_advance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://easonwang.gitbook.io/web_advance/chapter1/tcp.md). # TCP 即為 net module ### 簡易的 http server ```javascript const net = require('net'); const server = net.createServer((socket) => { socket.on('data', data => { console.log(data.toString()) socket.end(` HTTP/1.1 200 OK\r\nContent-type: text/html\r\n test `) }) }).on('error', (err) => { // Handle errors here. throw err; }); server.listen(8124, () => { console.log('opened server on', 8124); }); ``` ## IPC server > 通常會指定 /tmp ```javascript const net = require('net'); const path = require('path'); const server = net.createServer((socket) => { socket.on('data', data => { console.log(data.toString()) socket.end('hi') }) }).on('error', (err) => { // Handle errors here. throw err; }); const port = '/tmp/unix.sock3'; // Grab an arbitrary unused port. server.listen(port, () => { console.log('opened server on', port); }); ``` client ```javascript const net = require('net'); const port = '/tmp/unix.sock3'; const client = net.createConnection(port, () => { // 'connect' listener. console.log('connected to server!'); client.write('world!\r\n'); }); client.on('data', (data) => { console.log(data.toString()); client.end(); }); client.on('end', () => { console.log('disconnected from server'); }); ```