http: always emit close on req and res

PR-URL: #20611Fixes: #20600
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: ronag

lib/_http_server.js

@@ -561,6 +561,8 @@ function resOnFinish(req, res, socket, state, server) {
 req._dump();
 
 res.detachSocket(socket);
+req.emit('close');
+res.emit('close');
 
 if(res._last){
 if(typeofsocket.destroySoon==='function'){

test/parallel/test-http-req-res-close.js

@@ -0,0 +1,16 @@
+'use strict';
+
+constcommon=require('../common');
+consthttp=require('http');
+
+constserver=http.Server(common.mustCall((req,res)=>{
+res.end();
+res.on('finish',common.mustCall());
+res.on('close',common.mustCall());
+req.on('close',common.mustCall());
+res.socket.on('close',()=>server.close());
+}));
+
+server.listen(0,common.mustCall(()=>{
+http.get({port: server.address().port},common.mustCall());
+}));