When a user logs into a website, a session is often established. The browser and server exchange a session identifier, so the server knows who it is talking to with each subsequent HTTP request.
Headers
▼ General
Remote Address: 121.232.112.200:443
Request Method: GET
Status Code: 200 OK
▶ Request Headers
▼ Response Headers
Set-Cookie: session_id=142983010
Set-Cookie: user_id=3829