From 7905e89259b00158e825ad38d799378d099f0cc7 Mon Sep 17 00:00:00 2001
From: Kegan Dougal <kegan@matrix.org>
Date: Wed, 26 Aug 2020 13:13:02 +0100
Subject: [PATCH] Wait for 8h between device list updates for blacklisted
 servers

---
 keyserver/internal/device_list_update.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/keyserver/internal/device_list_update.go b/keyserver/internal/device_list_update.go
index 3fbf31f1e..4d1b1107c 100644
--- a/keyserver/internal/device_list_update.go
+++ b/keyserver/internal/device_list_update.go
@@ -341,8 +341,12 @@ func (u *DeviceListUpdater) processServer(serverName gomatrixserverlib.ServerNam
 		if err != nil {
 			logger.WithError(err).WithField("user_id", userID).Error("failed to query device keys for user")
 			fcerr, ok := err.(*fedsenderapi.FederationClientError)
-			if ok && fcerr.RetryAfter > 0 {
-				waitTime = fcerr.RetryAfter
+			if ok {
+				if fcerr.RetryAfter > 0 {
+					waitTime = fcerr.RetryAfter
+				} else if fcerr.Blacklisted {
+					waitTime = time.Hour * 8
+				}
 			}
 			hasFailures = true
 			continue