diff --git a/synapse/rest/client/room.py b/synapse/rest/client/room.py
index 83f84e4998..23c909ab14 100644
--- a/synapse/rest/client/room.py
+++ b/synapse/rest/client/room.py
@@ -419,7 +419,6 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):
super().__init__(hs)
super(ResolveRoomIdMixin, self).__init__(hs) # ensure the Mixin is set up
self.auth = hs.get_auth()
- self._support_via = hs.config.experimental.msc4156_enabled
def register(self, http_server: HttpServer) -> None:
# /join/$room_identifier[/$txn_id]
@@ -437,13 +436,11 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):
# twisted.web.server.Request.args is incorrectly defined as Optional[Any]
args: Dict[bytes, List[bytes]] = request.args # type: ignore
- remote_room_hosts = parse_strings_from_args(args, "server_name", required=False)
- if self._support_via:
+ # Prefer via over server_name (deprecated with MSC4156)
+ remote_room_hosts = parse_strings_from_args(args, "via", required=False)
+ if remote_room_hosts is None:
remote_room_hosts = parse_strings_from_args(
- args,
- "org.matrix.msc4156.via",
- default=remote_room_hosts,
- required=False,
+ args, "server_name", required=False
)
room_id, remote_room_hosts = await self.resolve_room_id(
room_identifier,
|
