🩹 [#390] Fix 'Address already in use' error

backend/src/openarchiefbeheer/utils/tests/e2e.py

@@ -3,6 +3,7 @@
 from django.conf import settings
 from django.contrib.staticfiles.testing import StaticLiveServerTestCase
 from django.core.cache import cache
+from django.test.testcases import LiveServerThread, QuietWSGIRequestHandler
 
 from playwright.async_api import async_playwright
 
@@ -44,9 +45,28 @@ async def browser_page_with_tracing():
             await browser.close()
 
 
+class LiveServerThreadWithReuse(LiveServerThread):
+    """Live server thread with reuse of local addresses
+
+    Apparently, after the server thread is stopped, the socket is still bound to the address and in TIME_WAIT state.
+    The connection is kept around so that any delayed packets can be matched to the connection and handled appropriately.
+    The OS will close the connection once a timeout period has passed.
+    By reusing the address, we prevent the ``socket.error: [Errno 48] Address already in use`` error.
+    """
+
+    def _create_server(self, connections_override=None):
+        return self.server_class(
+            (self.host, self.port),
+            QuietWSGIRequestHandler,
+            allow_reuse_address=True,
+            connections_override=connections_override,
+        )
+
+
 class PlaywrightTestCase(StaticLiveServerTestCase):
     port = settings.E2E_PORT
     fixtures = ["permissions.json"]
+    server_thread_class = LiveServerThreadWithReuse
 
     def setUp(self):
         super().setUp()