diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index dc53b4b170..f9930b6460 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -770,6 +770,42 @@ class PublicRoomList(BaseFederationServlet):
)
return 200, data
+ async def on_POST(self, origin, content, query):
+ # This implements MSC2197 (Search Filtering over Federation)
+ if not self.allow_access:
+ raise FederationDeniedError(origin)
+
+ limit = int(content.get("limit", 100))
+ since_token = content.get("since", None)
+ search_filter = content.get("filter", None)
+
+ include_all_networks = content.get("include_all_networks", False)
+ third_party_instance_id = content.get("third_party_instance_id", None)
+
+ if include_all_networks:
+ network_tuple = None
+ if third_party_instance_id is not None:
+ raise SynapseError(
+ 400, "Can't use include_all_networks with an explicit network"
+ )
+ elif third_party_instance_id is None:
+ network_tuple = ThirdPartyInstanceID(None, None)
+ else:
+ network_tuple = ThirdPartyInstanceID.from_string(third_party_instance_id)
+
+ if search_filter is None:
+ logger.warning("Nonefilter")
+
+ data = await self.handler.get_local_public_room_list(
+ limit=limit,
+ since_token=since_token,
+ search_filter=search_filter,
+ network_tuple=network_tuple,
+ from_federation=True,
+ )
+
+ return 200, data
+
class FederationVersionServlet(BaseFederationServlet):
PATH = "/version"
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