1 files changed, 13 insertions, 0 deletions
diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py
index 1a6f69e7d3..4812fb4496 100644
--- a/synapse/appservice/api.py
+++ b/synapse/appservice/api.py
@@ -266,6 +266,19 @@ class ApplicationServiceApi(SimpleHttpClient):
         key = (service.id, protocol)
         return await self.protocol_meta_cache.wrap(key, _get)
 
+    async def ping(self, service: "ApplicationService", txn_id: Optional[str]) -> None:
+        # The caller should check that url is set
+        assert service.url is not None, "ping called without URL being set"
+
+        # This is required by the configuration.
+        assert service.hs_token is not None
+
+        await self.post_json_get_json(
+            uri=service.url + "/_matrix/app/unstable/fi.mau.msc2659/ping",
+            post_json={"transaction_id": txn_id},
+            headers={"Authorization": [f"Bearer {service.hs_token}"]},
+        )
+
     async def push_bulk(
         self,
         service: "ApplicationService",