From 83911675cd3b15ed419eeb7d0a17f54adfdfdc2c Mon Sep 17 00:00:00 2001
From: Lucian Balaceanu <lucian.balaceanu@1and1.ro>
Date: Tue, 8 May 2018 12:01:20 +0300
Subject: [PATCH] Fix for recovering from losing synchronous redis context
 while the async one is up

Force re-checking of the synchronous redis context state in case of processing
a redis notification. It is possible that redis async context is up while the
blocking one is down.
---
 daemon/redis.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/daemon/redis.c b/daemon/redis.c
index 197a1c430..f90183348 100644
--- a/daemon/redis.c
+++ b/daemon/redis.c
@@ -346,6 +346,9 @@ void on_redis_notification(redisAsyncContext *actx, void *reply, void *privdata)
 	// now at <key>
 	callid = keyspace_id;
 
+	if (redis_check_conn(r) == REDIS_STATE_DISCONNECTED)
+		goto err;
+
 	// select the right db for restoring the call
 	if (redisCommandNR(r->ctx, "SELECT %i", r->db)) {
 		if (r->ctx && r->ctx->err)