net: fix net.Server keepalive and noDelay

PR-URL: #43497
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

lib/net.js

@@ -1659,12 +1659,11 @@ function onconnection(err, clientHandle) {
     writable: true
   });
 
-  if (self.noDelay && handle.setNoDelay) {
-    handle.setNoDelay(true);
+  if (self.noDelay && clientHandle.setNoDelay) {
+    clientHandle.setNoDelay(true);
   }
-
-  if (self.keepAlive && self.setKeepAlive) {
-    handle.setKeepAlive(true, handle.keepAliveInitialDelay);
+  if (self.keepAlive && clientHandle.setKeepAlive) {
+    clientHandle.setKeepAlive(true, self.keepAliveInitialDelay);
   }
 
   self._connections++;

test/parallel/test-net-server-keepalive.js

@@ -0,0 +1,25 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+
+const server = net.createServer({
+  keepAlive: true,
+  keepAliveInitialDelay: 1000
+}, common.mustCall((socket) => {
+  socket.destroy();
+  server.close();
+})).listen(0, common.mustCall(() => {
+  net.connect(server.address().port);
+}));
+
+const onconnection = server._handle.onconnection;
+server._handle.onconnection = common.mustCall((err, clientHandle) => {
+  const setKeepAlive = clientHandle.setKeepAlive;
+  clientHandle.setKeepAlive = common.mustCall((enable, initialDelayMsecs) => {
+    assert.strictEqual(enable, server.keepAlive);
+    assert.strictEqual(initialDelayMsecs, server.keepAliveInitialDelay);
+    setKeepAlive.call(clientHandle, enable, initialDelayMsecs);
+  });
+  onconnection.call(server._handle, err, clientHandle);
+});

test/parallel/test-net-server-nodelay.js

@@ -0,0 +1,23 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+
+const server = net.createServer({
+  noDelay: true
+}, common.mustCall((socket) => {
+  socket.destroy();
+  server.close();
+})).listen(0, common.mustCall(() => {
+  net.connect(server.address().port);
+}));
+
+const onconnection = server._handle.onconnection;
+server._handle.onconnection = common.mustCall((err, clientHandle) => {
+  const setNoDelay = clientHandle.setNoDelay;
+  clientHandle.setNoDelay = common.mustCall((enable) => {
+    assert.strictEqual(enable, server.noDelay);
+    setNoDelay.call(clientHandle, enable);
+  });
+  onconnection.call(server._handle, err, clientHandle);
+});