Allow bigger responses to `/federation/v1/state` (#12877)

* Refactor HTTP response size limits

Rather than passing a separate `max_response_size` down the stack, make it an
attribute of the `parser`.

* Allow bigger responses on `federation/v1/state`

`/state` can return huge responses, so we need to handle that.

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/http/test_fedclient.py b/tests/http/test_fedclient.py

index 638babae69..006dbab093 100644
--- a/tests/http/test_fedclient.py
+++ b/tests/http/test_fedclient.py
@@ -26,7 +26,7 @@ from twisted.web.http import HTTPChannel
 
 from synapse.api.errors import RequestSendFailed
 from synapse.http.matrixfederationclient import (
-    MAX_RESPONSE_SIZE,
+    JsonParser,
     MatrixFederationHttpClient,
     MatrixFederationRequest,
 )
@@ -609,9 +609,9 @@ class FederationClientTests(HomeserverTestCase):
         while not test_d.called:
             protocol.dataReceived(b"a" * chunk_size)
             sent += chunk_size
-            self.assertLessEqual(sent, MAX_RESPONSE_SIZE)
+            self.assertLessEqual(sent, JsonParser.MAX_RESPONSE_SIZE)
 
-        self.assertEqual(sent, MAX_RESPONSE_SIZE)
+        self.assertEqual(sent, JsonParser.MAX_RESPONSE_SIZE)
 
         f = self.failureResultOf(test_d)
         self.assertIsInstance(f.value, RequestSendFailed)