From b0cd706012b4c9b6724b11e16f19c4cb732ab286 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Fri, 25 Feb 2022 11:05:20 +0000
Subject: [PATCH] Topologically sort with `SendEventWithState`, so that earlier
 events should satisfy auth for later ones

---
 roomserver/api/wrapper.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/roomserver/api/wrapper.go b/roomserver/api/wrapper.go
index 012094c62..e70316770 100644
--- a/roomserver/api/wrapper.go
+++ b/roomserver/api/wrapper.go
@@ -56,6 +56,8 @@ func SendEventWithState(
 		return err
 	}
 
+	outliers = gomatrixserverlib.ReverseTopologicalOrdering(outliers, gomatrixserverlib.TopologicalOrderByAuthEvents)
+
 	var ires []InputRoomEvent
 	for _, outlier := range outliers {
 		if haveEventIDs[outlier.EventID()] {