Add test-http-server-response-standalone and fix ServerResponse.end

src/js/node/_http_server.ts

@@ -231,9 +231,54 @@ const ServerResponsePrototype = {
     }
 
     if (!handle) {
-      if ($isCallable(callback)) {
-        process.nextTick(callback);
+      if (!this.socket) {
+        if ($isCallable(callback)) {
+          process.nextTick(callback);
+        }
+        return this;
       }
+
+      this._implicitHeader();
+
+      if (chunk) {
+        OutgoingMessagePrototype._send.$call(this, chunk, encoding, null);
+      } else {
+        OutgoingMessagePrototype._send.$call(this, kEmptyBuffer, encoding, null);
+      }
+
+      const socket = this.socket;
+
+      this.detachSocket(socket);
+      this.finished = true;
+      process.nextTick(self => {
+        self._ended = true;
+      }, this);
+      this.emit("prefinish");
+      this._callPendingCallbacks();
+
+      if (callback) {
+        process.nextTick(
+          function (callback, self) {
+            self.emit("finish");
+            try {
+              callback();
+            } catch (err) {
+              self.emit("error", err);
+            }
+
+            process.nextTick(emitCloseNT, self);
+          },
+          callback,
+          this,
+        );
+      } else {
+        process.nextTick(function (self) {
+          self.emit("finish");
+          process.nextTick(emitCloseNT, self);
+        }, this);
+      }
+
+      socket.end(Buffer.alloc(0));
       return this;
     }
 

test/js/node/test/parallel/test-http-server-response-standalone.js

@@ -0,0 +1,38 @@
+const common = require('../common');
+const { ServerResponse } = require('http');
+const { Writable } = require('stream');
+const assert = require('assert');
+
+// Check that ServerResponse can be used without a proper Socket
+// Refs: https://github.com/nodejs/node/issues/14386
+// Refs: https://github.com/nodejs/node/issues/14381
+
+const res = new ServerResponse({
+  method: 'GET',
+  httpVersionMajor: 1,
+  httpVersionMinor: 1
+});
+
+let firstChunk = true;
+
+const ws = new Writable({
+  write: common.mustCall((chunk, encoding, callback) => {
+    if (firstChunk) {
+      assert(chunk.toString().endsWith('hello world'));
+      firstChunk = false;
+    } else {
+      assert.strictEqual(chunk.length, 0);
+    }
+    setImmediate(callback);
+  }, 2)
+});
+
+res.assignSocket(ws);
+
+assert.throws(function() {
+  res.assignSocket(ws);
+}, {
+  code: 'ERR_HTTP_SOCKET_ASSIGNED'
+});
+
+res.end('hello world');