fix(har): account for socket reuse

packages/playwright-core/src/server/fetch.ts

@@ -329,6 +329,11 @@ export abstract class APIRequestContext extends SdkObject {
             blocked: -1,
           };
 
+          if (request.reusedSocket) {
+            timings.connect = -1;
+            timings.dns = -1;
+          }
+
           const requestFinishedEvent: APIRequestFinishedEvent = {
             requestEvent,
             httpVersion: response.httpVersion,
@@ -491,8 +496,13 @@ export abstract class APIRequestContext extends SdkObject {
       request.on('socket', socket => {
         // happy eyeballs don't emit lookup and connect events, so we use our custom ones
         const happyEyeBallsTimings = timingForSocket(socket);
-        dnsLookupAt = happyEyeBallsTimings.dnsLookupAt;
+        if (request.reusedSocket) {
-        tcpConnectionAt ??= happyEyeBallsTimings.tcpConnectionAt;
+          dnsLookupAt = startAt;
+          tcpConnectionAt = startAt;
+        } else {
+          dnsLookupAt = happyEyeBallsTimings.dnsLookupAt;
+          tcpConnectionAt ??= happyEyeBallsTimings.tcpConnectionAt;
+        }
 
         // non-happy-eyeballs sockets
         listeners.push(

tests/library/har.spec.ts

@@ -877,6 +877,18 @@ it('should include timings when using socks proxy', async ({ contextFactory, ser
   expect(log.entries[0].timings.connect).toBeGreaterThan(0);
 });
 
+it('should not have connect and dns timings when socket is reused', async ({ contextFactory, server }, testInfo) => {
+  const { page, getLog } = await pageWithHar(contextFactory, testInfo);
+  await page.request.get(server.EMPTY_PAGE);
+  await page.request.get(server.EMPTY_PAGE);
+
+  const log = await getLog();
+  expect(log.entries).toHaveLength(2);
+  const request2 = log.entries[1];
+  expect.soft(request2.timings.connect).toBe(-1);
+  expect.soft(request2.timings.dns).toBe(-1);
+});
+
 it('should include redirects from API request', async ({ contextFactory, server }, testInfo) => {
   server.setRedirect('/redirect-me', '/simple.json');
   const { page, getLog } = await pageWithHar(contextFactory, testInfo);