pestphp · nunomaduro · Jan 7, 2026 · Jan 7, 2026 · Jan 7, 2026
diff --git a/src/Drivers/LaravelHttpServer.php b/src/Drivers/LaravelHttpServer.php
@@ -23,6 +23,7 @@
 use Pest\Browser\Exceptions\ServerNotFoundException;
 use Pest\Browser\Execution;
 use Pest\Browser\GlobalState;
+use Pest\Browser\Playwright\Playwright;
 use Psr\Log\NullLogger;
 use Symfony\Component\Mime\MimeTypes;
 use Throwable;
@@ -260,6 +261,16 @@ private function handleRequest(AmpRequest $request): Response
 
         $symfonyRequest->headers->add($request->getHeaders());
 
+        // Set the Host header to match the configured host for subdomain routing
+        $configuredHost = Playwright::host();
+        if ($configuredHost !== null) {
+            $hostHeader = sprintf('%s:%d', $configuredHost, $this->port);
+            $symfonyRequest->headers->set('Host', $hostHeader);
+            // Also set SERVER_NAME for Laravel routing
+            $symfonyRequest->server->set('SERVER_NAME', $configuredHost);
+            $symfonyRequest->server->set('HTTP_HOST', $hostHeader);
+        }
+
         $debug = config('app.debug');
 
         try {

diff --git a/src/ServerManager.php b/src/ServerManager.php
@@ -85,7 +85,7 @@ public function http(): HttpServer
     {
         return $this->http ??= match (function_exists('app_path')) {
             true => new LaravelHttpServer(
-                Playwright::host() ?? self::DEFAULT_HOST,
+                self::DEFAULT_HOST, // Always bind to 127.0.0.1 for server
                 Port::find(),
             ),
             default => new NullableHttpServer(),

diff --git a/tests/Browser/Visit/SubdomainTest.php b/tests/Browser/Visit/SubdomainTest.php
@@ -4,28 +4,26 @@
 
 use Illuminate\Support\Facades\Route;
 
-it('can visit subdomain routes with browser testing', function (): void {
-    Route::domain('app.localhost')->group(function (): void {
-        Route::get('/', fn (): string => '
-            <html>
-            <head><title>App Subdomain</title></head>
-            <body>
-                <h1>Welcome to App Subdomain</h1>
-                <div id="content">This is the app subdomain content</div>
-            </body>
-            </html>
-        ');
-    });
+it('can visit non-subdomain routes with subdomain host browser testing', function (): void {
+    Route::get('/app-test', fn (): string => '
+        <html>
+        <head><title>Non Subdomain</title></head>
+        <body>
+            <h1>Welcome to NON Subdomain</h1>
+            <div id="content">This is the non subdomain content</div>
+        </body>
+        </html>
+    ');
 
     pest()->browser()->withHost('app.localhost');
 
-    visit('/')
-        ->assertSee('Welcome to App Subdomain')
-        ->assertSeeIn('#content', 'This is the app subdomain content')
-        ->assertTitle('App Subdomain');
+    visit('/app-test')
+        ->assertSee('Welcome to NON Subdomain')
+        ->assertSeeIn('#content', 'This is the non subdomain content')
+        ->assertTitle('Non Subdomain');
 });
 
-it('works with Laravel Sail style subdomains', function (): void {
+it('works with Laravel subdomain style', function (): void {
     // Simulate Laravel Sail subdomain routing pattern
     Route::domain('{subdomain}.localhost')->group(function (): void {
         Route::get('/api/health', fn (): array => [

diff --git a/tests/Unit/Drivers/Laravel/LaravelHttpServerHostDebugTest.php b/tests/Unit/Drivers/Laravel/LaravelHttpServerHostDebugTest.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Support\Facades\Route;
+
+it('sets the host header correctly for subdomain routing', function (): void {
+    Route::get('/debug-host', fn (): array => [
+        'host' => request()->getHost(),
+        'server_name' => request()->server('SERVER_NAME'),
+        'http_host' => request()->server('HTTP_HOST'),
+        'headers' => request()->headers->all(),
+        'url' => request()->url(),
+        'full_url' => request()->fullUrl(),
+    ]);
+
+    pest()->browser()->withHost('debug.localhost');
+
+    visit('/debug-host')
+        ->assertSee('debug.localhost');
+});
+
+it('works with default host when no custom host is set', function (): void {
+    Route::get('/debug-default', fn (): string => 'Default host test works');
+
+    // Don't set custom host - should use default
+    visit('/debug-default')
+        ->assertSee('Default host test works');
+});