1 files changed, 16 insertions, 0 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index a58fc37fff..92c153f300 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -28,6 +28,7 @@ from synapse.util.logcontext import preserve_fn
 from synapse.util.metrics import measure_func
 from synapse.util.frozenutils import unfreeze
 from synapse.visibility import filter_events_for_client
+from synapse.replication.http.send_event import send_event_to_master
 
 from ._base import BaseHandler
 
@@ -312,6 +313,9 @@ class EventCreationHandler(object):
         self.server_name = hs.hostname
         self.ratelimiter = hs.get_ratelimiter()
         self.notifier = hs.get_notifier()
+        self.config = hs.config
+
+        self.http_client = hs.get_simple_http_client()
 
         # This is only used to get at ratelimit function, and maybe_kick_guest_users
         self.base_handler = BaseHandler(hs)
@@ -559,6 +563,18 @@ class EventCreationHandler(object):
     ):
         # We now need to go and hit out to wherever we need to hit out to.
 
+        # If we're a worker we need to hit out to the master.
+        if self.config.worker_app:
+            yield send_event_to_master(
+                self.http_client,
+                host=self.config.worker_replication_host,
+                port=self.config.worker_replication_http_port,
+                requester=requester,
+                event=event,
+                context=context,
+            )
+            return
+
         if ratelimit:
             yield self.base_handler.ratelimit(requester)