Remove support for unstable MSC3882

changelog.d/15670.removal

@@ -0,0 +1 @@
+Remove support for unstable revisions of [MSC3882](https://github.com/matrix-org/matrix-spec-proposals/pull/3882).

synapse/rest/client/login_token_request.py

@@ -52,10 +52,6 @@ class LoginTokenRequestServlet(RestServlet):
         *client_patterns(
             "/login/get_token$", releases=["v1"], v1=False, unstable=False
         ),
-        # TODO: this is no longer needed once unstable MSC3882 does not need to be supported:
-        *client_patterns(
-            "/org.matrix.msc3882/login/token$", releases=[], v1=False, unstable=True
-        ),
     ]
 
     def __init__(self, hs: "HomeServer"):
@@ -101,8 +97,6 @@ async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
             200,
             {
                 "login_token": login_token,
-                # TODO: this is no longer needed once unstable MSC3882 does not need to be supported:
-                "expires_in": self.token_timeout // 1000,
                 "expires_in_ms": self.token_timeout,
             },
         )

synapse/rest/client/versions.py

@@ -113,8 +113,6 @@ def on_GET(self, request: Request) -> Tuple[int, JsonDict]:
                     "fi.mau.msc2815": self.config.experimental.msc2815_enabled,
                     # Adds a ping endpoint for appservices to check HS->AS connection
                     "fi.mau.msc2659.stable": True,  # TODO: remove when "v1.7" is added above
-                    # TODO: this is no longer needed once unstable MSC3882 does not need to be supported:
-                    "org.matrix.msc3882": self.config.auth.login_via_existing_enabled,
                     # Adds support for remotely enabling/disabling pushers, as per MSC3881
                     "org.matrix.msc3881": self.config.experimental.msc3881_enabled,
                     # Adds support for filtering /messages by event relation.

tests/rest/client/test_login_token_request.py

@@ -132,37 +132,3 @@ def test_expires_in(self) -> None:
         channel = self.make_request("POST", GET_TOKEN_ENDPOINT, {}, access_token=token)
         self.assertEqual(channel.code, 200)
         self.assertEqual(channel.json_body["expires_in_ms"], 15000)
-
-    @override_config(
-        {
-            "login_via_existing_session": {
-                "enabled": True,
-                "require_ui_auth": False,
-                "token_timeout": "15s",
-            }
-        }
-    )
-    def test_unstable_support(self) -> None:
-        # TODO: remove support for unstable MSC3882 is no longer needed
-
-        # check feature is advertised in versions response:
-        channel = self.make_request(
-            "GET", "/_matrix/client/versions", {}, access_token=None
-        )
-        self.assertEqual(channel.code, 200)
-        self.assertEqual(
-            channel.json_body["unstable_features"]["org.matrix.msc3882"], True
-        )
-
-        self.register_user(self.user, self.password)
-        token = self.login(self.user, self.password)
-
-        # check feature is available via the unstable endpoint and returns an expires_in value in seconds
-        channel = self.make_request(
-            "POST",
-            "/_matrix/client/unstable/org.matrix.msc3882/login/token",
-            {},
-            access_token=token,
-        )
-        self.assertEqual(channel.code, 200)
-        self.assertEqual(channel.json_body["expires_in"], 15)