Node: 'close' event on req and res?

Question

Node.js

Please help me with the question of the 'close' event for request and response in the http module in the node, what does it mean for these objects. The hitch arose when studying streams, somewhere the destroy () of the stream is hung on the 'close' event of req, and somewhere in res. In what all the same event it is necessary to destroy a flow?

Answer 1

response:
https://nodejs.org/api/http.html#http_event_close_1
request:
https://nodejs.org/api/http.html#http_event_close_2