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-rw-r--r--synapse/federation/replication.py5
-rw-r--r--synapse/federation/transport.py26
2 files changed, 31 insertions, 0 deletions
diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py
index e358de942e..719bfcc42c 100644
--- a/synapse/federation/replication.py
+++ b/synapse/federation/replication.py
@@ -427,6 +427,11 @@ class ReplicationLayer(object):
         }))
 
     @defer.inlineCallbacks
+    def on_event_auth(self, origin, context, event_id):
+        auth_pdus = yield self.handler.on_event_auth(event_id)
+        defer.returnValue((200, [a.get_dict() for a in auth_pdus]))
+
+    @defer.inlineCallbacks
     def make_join(self, destination, context, user_id):
         pdu_dict = yield self.transport_layer.make_join(
             destination=destination,
diff --git a/synapse/federation/transport.py b/synapse/federation/transport.py
index b9f7d54c71..babe8447eb 100644
--- a/synapse/federation/transport.py
+++ b/synapse/federation/transport.py
@@ -257,6 +257,21 @@ class TransportLayer(object):
         defer.returnValue(json.loads(content))
 
     @defer.inlineCallbacks
+    @log_function
+    def get_event_auth(self, destination, context, event_id):
+        path = PREFIX + "/event_auth/%s/%s" % (
+            context,
+            event_id,
+        )
+
+        response = yield self.client.get_json(
+            destination=destination,
+            path=path,
+        )
+
+        defer.returnValue(response)
+
+    @defer.inlineCallbacks
     def _authenticate_request(self, request):
         json_request = {
             "method": request.method,
@@ -427,6 +442,17 @@ class TransportLayer(object):
         )
 
         self.server.register_path(
+            "GET",
+            re.compile("^" + PREFIX + "/event_auth/([^/]*)/([^/]*)$"),
+            self._with_authentication(
+                lambda origin, content, query, context, event_id:
+                handler.on_event_auth(
+                    origin, context, event_id,
+                )
+            )
+        )
+
+        self.server.register_path(
             "PUT",
             re.compile("^" + PREFIX + "/send_join/([^/]*)/([^/]*)$"),
             self._with_authentication(