From 6bd37f9cea1e495d933123a05139de40ce2aa386 Mon Sep 17 00:00:00 2001
From: Francesco Novy <francesco.novy@sentry.io>
Date: Mon, 19 Oct 2026 10:14:59 +0200
Subject: [PATCH] test(e2e): Move app port 38787 out of the ephemeral port
 range

The event proxy also listens on port 0 for its callback server, so the kernel
can assign it 38787, which makes Playwright's pre-start port check fail with
"is already used".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../cloudflare-local-workers/playwright.config.ts             | 2 +-
 .../test-applications/cloudflare-mcp/playwright.config.ts     | 2 +-
 .../test-applications/cloudflare-mcp/tests/index.test.ts      | 2 +-
 .../test-applications/cloudflare-vercelai-v7/package.json     | 2 +-
 .../cloudflare-vercelai-v7/playwright.config.ts               | 2 +-
 .../cloudflare-workers-static/playwright.config.ts            | 2 +-
 .../test-applications/cloudflare-workers/playwright.config.ts | 2 +-
 .../cloudflare-workersentrypoint/playwright.config.ts         | 2 +-
 .../e2e-tests/test-applications/gen-ai-libraries/package.json | 4 ++--
 .../test-applications/gen-ai-libraries/playwright.config.ts   | 2 +-
 .../test-applications/hono-4-legacy/playwright.config.ts      | 2 +-
 .../test-applications/hono-4-legacy/src/entry.bun.ts          | 2 +-
 .../test-applications/hono-4-legacy/src/entry.deno.ts         | 2 +-
 .../test-applications/hono-4-legacy/src/entry.node.ts         | 2 +-
 .../e2e-tests/test-applications/hono-4/playwright.config.ts   | 2 +-
 .../e2e-tests/test-applications/hono-4/src/entry.bun.ts       | 2 +-
 .../e2e-tests/test-applications/hono-4/src/entry.deno.ts      | 2 +-
 .../e2e-tests/test-applications/hono-4/src/entry.node.ts      | 2 +-
 18 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-local-workers/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-local-workers/playwright.config.ts
index 73abbd951b90..127be6a131eb 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-local-workers/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-local-workers/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const config = getPlaywrightConfig(
   {
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-mcp/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-mcp/playwright.config.ts
index 73abbd951b90..127be6a131eb 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-mcp/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-mcp/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const config = getPlaywrightConfig(
   {
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-mcp/tests/index.test.ts b/dev-packages/e2e-tests/test-applications/cloudflare-mcp/tests/index.test.ts
index d47c2977a6e9..8219b57bfe09 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-mcp/tests/index.test.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-mcp/tests/index.test.ts
@@ -66,7 +66,7 @@ test('sends spans for MCP 2026-07-28 tool calls', async ({ baseURL }) => {
   expect(requestSpan.attributes['http.request.method']?.value).toBe('POST');
   expect(requestSpan.attributes['url.path']?.value).toBe('/mcp');
   expect(requestSpan.attributes['url.full']?.value).toBe(url);
-  expect(requestSpan.attributes['url.port']?.value).toBe('38787');
+  expect(requestSpan.attributes['url.port']?.value).toBe('8787');
   expect(requestSpan.attributes['url.scheme']?.value).toBe('http:');
   expect(requestSpan.attributes['server.address']?.value).toBe('localhost');
   expect(requestSpan.attributes['http.request.body.size']?.value).toBe(341);
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/package.json b/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/package.json
index 955e1435d558..791835691716 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/package.json
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/package.json
@@ -5,7 +5,7 @@
   "scripts": {
     "dev": "vite dev",
     "build": "vite build",
-    "preview": "vite preview --port 38787",
+    "preview": "vite preview --port 8787",
     "typecheck": "tsc --noEmit",
     "test:build": "pnpm install && pnpm build",
     "test:assert": "pnpm test:prod",
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/playwright.config.ts
index 3761c194df43..5ac7a0e09e52 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-vercelai-v7/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const config = getPlaywrightConfig(
   {
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-workers-static/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-workers-static/playwright.config.ts
index 5c49d7c8e302..4e8b476d73de 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-workers-static/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-workers-static/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 export const INSPECTOR_PORT = 9230;
 
 const config = getPlaywrightConfig(
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-workers/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-workers/playwright.config.ts
index 5c49d7c8e302..4e8b476d73de 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-workers/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-workers/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 export const INSPECTOR_PORT = 9230;
 
 const config = getPlaywrightConfig(
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-workersentrypoint/playwright.config.ts b/dev-packages/e2e-tests/test-applications/cloudflare-workersentrypoint/playwright.config.ts
index 73abbd951b90..127be6a131eb 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-workersentrypoint/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-workersentrypoint/playwright.config.ts
@@ -5,7 +5,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const config = getPlaywrightConfig(
   {
diff --git a/dev-packages/e2e-tests/test-applications/gen-ai-libraries/package.json b/dev-packages/e2e-tests/test-applications/gen-ai-libraries/package.json
index 2ea5cee00536..076ac49d7ac1 100644
--- a/dev-packages/e2e-tests/test-applications/gen-ai-libraries/package.json
+++ b/dev-packages/e2e-tests/test-applications/gen-ai-libraries/package.json
@@ -6,8 +6,8 @@
   "type": "module",
   "scripts": {
     "dev:node": "node --import tsx/esm --import ./src/instrument.node.ts src/entry.node.ts",
-    "dev:cloudflare": "wrangler dev --config ./dist/gen_ai_libraries/wrangler.json --var \"E2E_TEST_DSN:$E2E_TEST_DSN\" --var \"E2E_OPENROUTER_API_KEY:$E2E_OPENROUTER_API_KEY\" --port 38787",
-    "preview": "vite preview --port 38787",
+    "dev:cloudflare": "wrangler dev --config ./dist/gen_ai_libraries/wrangler.json --var \"E2E_TEST_DSN:$E2E_TEST_DSN\" --var \"E2E_OPENROUTER_API_KEY:$E2E_OPENROUTER_API_KEY\" --port 8787",
+    "preview": "vite preview --port 8787",
     "test": "playwright test",
     "clean": "npx rimraf node_modules dist pnpm-lock.yaml",
     "test:build": "pnpm install",
diff --git a/dev-packages/e2e-tests/test-applications/gen-ai-libraries/playwright.config.ts b/dev-packages/e2e-tests/test-applications/gen-ai-libraries/playwright.config.ts
index e3119c8f0ce2..4b55bf3d9b2c 100644
--- a/dev-packages/e2e-tests/test-applications/gen-ai-libraries/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/gen-ai-libraries/playwright.config.ts
@@ -4,7 +4,7 @@ import { RUNTIME } from './tests/constants';
 // The same suite runs against both runtimes, selected by the `RUNTIME` env var (see the `sentryTest`
 // variants in package.json): the Node entry (runtime channel injection) or the Cloudflare entry (Vite
 // build + `@sentry/cloudflare/vite` plugin at build time, the prebuilt bundle served by `wrangler dev`).
-const CF_PORT = 38787;
+const CF_PORT = 8787;
 const NODE_PORT = 3030;
 
 const config = getPlaywrightConfig(
diff --git a/dev-packages/e2e-tests/test-applications/hono-4-legacy/playwright.config.ts b/dev-packages/e2e-tests/test-applications/hono-4-legacy/playwright.config.ts
index 5087b887e1f2..e0300ca09f4b 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4-legacy/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4-legacy/playwright.config.ts
@@ -7,7 +7,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const startCommands: Record<Runtime, string> = {
   cloudflare: `pnpm dev:cf --port ${APP_PORT}`,
diff --git a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.bun.ts b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.bun.ts
index 6466b79717f5..6198a126fc62 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.bun.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.bun.ts
@@ -17,7 +17,7 @@ app.use(
 
 addRoutes(app);
 
-const port = Number(process.env.PORT || 38787);
+const port = Number(process.env.PORT || 8787);
 
 export default {
   port,
diff --git a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.deno.ts b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.deno.ts
index 15bd12a74111..db27e0267c06 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.deno.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.deno.ts
@@ -16,6 +16,6 @@ app.use(
 
 addRoutes(app);
 
-const port = Number(Deno.env.get('PORT') || 38787);
+const port = Number(Deno.env.get('PORT') || 8787);
 
 Deno.serve({ port }, app.fetch);
diff --git a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.node.ts b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.node.ts
index 898a92e08be4..213055bd0b12 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.node.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4-legacy/src/entry.node.ts
@@ -9,7 +9,7 @@ app.use(sentry(app));
 
 addRoutes(app);
 
-const port = Number(process.env.PORT || 38787);
+const port = Number(process.env.PORT || 8787);
 
 serve({ fetch: app.fetch, port }, () => {
   console.log(`Hono (Node) listening on port ${port}`);
diff --git a/dev-packages/e2e-tests/test-applications/hono-4/playwright.config.ts b/dev-packages/e2e-tests/test-applications/hono-4/playwright.config.ts
index b8c04df05aee..475e082970af 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4/playwright.config.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4/playwright.config.ts
@@ -7,7 +7,7 @@ if (!testEnv) {
   throw new Error('No test env defined');
 }
 
-const APP_PORT = 38787;
+const APP_PORT = 8787;
 
 const startCommands: Record<Runtime, string> = {
   cloudflare: `pnpm dev:cloudflare --port ${APP_PORT}`,
diff --git a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.bun.ts b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.bun.ts
index b47f15997480..dd114813e91b 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.bun.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.bun.ts
@@ -8,7 +8,7 @@ const app = new Hono();
 
 addRoutes(app);
 
-const port = Number(process.env.PORT || 38787);
+const port = Number(process.env.PORT || 8787);
 
 export default {
   port,
diff --git a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.deno.ts b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.deno.ts
index cc2411fd6cf9..6a5a40345a1a 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.deno.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.deno.ts
@@ -8,6 +8,6 @@ const app = new Hono();
 
 addRoutes(app);
 
-const port = Number(Deno.env.get('PORT') || 38787);
+const port = Number(Deno.env.get('PORT') || 8787);
 
 Deno.serve({ port }, app.fetch);
diff --git a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.node.ts b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.node.ts
index c67b3a206ef2..801c111c489e 100644
--- a/dev-packages/e2e-tests/test-applications/hono-4/src/entry.node.ts
+++ b/dev-packages/e2e-tests/test-applications/hono-4/src/entry.node.ts
@@ -6,7 +6,7 @@ const app = new Hono();
 
 addRoutes(app);
 
-const port = Number(process.env.PORT || 38787);
+const port = Number(process.env.PORT || 8787);
 
 serve({ fetch: app.fetch, port }, () => {
   // eslint-disable-next-line no-console