chore: open browser for reuse, destroy run server on detach (#16183)

packages/playwright-core/src/cli/driver.ts

@@ -39,14 +39,10 @@ export function runDriver() {
   const transport = process.send ? new IpcTransport(process) : new PipeTransport(process.stdout, process.stdin);
   transport.onmessage = message => dispatcherConnection.dispatch(JSON.parse(message));
   dispatcherConnection.onmessage = message => transport.send(JSON.stringify(message));
-  transport.onclose = async () => {
+  transport.onclose = () => {
     // Drop any messages during shutdown on the floor.
     dispatcherConnection.onmessage = () => {};
-    // Force exit after 30 seconds.
-    setTimeout(() => process.exit(0), 30000);
-    // Meanwhile, try to gracefully close all browsers.
-    await gracefullyCloseAll();
-    process.exit(0);
+    selfDestruct();
   };
 }
 
@@ -55,6 +51,11 @@ export async function runServer(port: number | undefined, path = '/', maxClients
   const wsEndpoint = await server.listen(port);
   process.on('exit', () => server.close().catch(console.error));
   console.log('Listening on ' + wsEndpoint);  // eslint-disable-line no-console
+  process.stdin.on('close', () => selfDestruct());
+  process.stdin.on('data', data => {
+    if (data.toString() === '<EOL>')
+      selfDestruct();
+  });
 }
 
 export async function launchBrowserServer(browserName: string, configFile?: string) {
@@ -65,3 +66,12 @@ export async function launchBrowserServer(browserName: string, configFile?: stri
   const server = await browserType.launchServer(options);
   console.log(server.wsEndpoint());
 }
+
+function selfDestruct() {
+  // Force exit after 30 seconds.
+  setTimeout(() => process.exit(0), 30000);
+  // Meanwhile, try to gracefully close all browsers.
+  gracefullyCloseAll().then(() => {
+    process.exit(0);
+  });
+}

packages/playwright-core/src/remote/playwrightServer.ts

@@ -22,6 +22,7 @@ import type { Playwright } from '../server/playwright';
 import { createPlaywright } from '../server/playwright';
 import { PlaywrightConnection } from './playwrightConnection';
 import { assert } from '../utils';
+import { serverSideCallMetadata } from '../server/instrumentation';
 
 const debugLog = debug('pw:server');
 
@@ -61,6 +62,27 @@ export class PlaywrightServer {
   }
 
   async listen(port: number = 0): Promise<string> {
+    if (this._mode === 'reuse-browser') {
+      const callMetadata = serverSideCallMetadata();
+      const browser = await this._preLaunchedPlaywright!.chromium.launch(callMetadata, { headless: false });
+      const { context } = await browser.newContextForReuse({ viewport: { width: 800, height: 600 } }, callMetadata);
+      const page = await context.newPage(callMetadata);
+      await page.mainFrame().setContent(callMetadata, `
+        <style>
+        html, body {
+          width: 100%;
+          height: 100%;
+        }
+        body {
+          display: flex;
+          flex-direction: column;
+          align-items: center;
+          justify-content: center;
+        }
+        </style>
+        <div>Playwright will use this page to run tests</div>`);
+    }
+
     const server = http.createServer((request, response) => {
       response.end('Running');
     });