telnet req.kr 80Step2. HTTP Request - GET
GET / HTTP/1.1 Host: req.kr User-Agent: Mozilla 5.0 ← press enter-key ← press enter-key- POST
POST /index.php HTTP/1.1 Host: req.kr Content-Type: application/x-www-form-urlencoded Content-Length: 6 ← press enter-key age=19 ← press enter-key ← press enter-keyStep3. Server Response
<html> <head> ... ... </html>Step4. Server Disconnect
Connection closed.