From a4f8f4a8246965c28a2ed3906a0567fbbfe09440 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Wed, 19 Dec 2018 17:55:07 +0100
Subject: [PATCH] RESP3: PING should reply normally in RESP3 Pub/Sub mode.

Because in RESP3 commands can be sent in the Pub/Sub connection without
problems, so it's better if in such mode there is no exception about
PING.
---
 src/server.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server.c b/src/server.c
index 8cdbdad7..c5b66788 100644
--- a/src/server.c
+++ b/src/server.c
@@ -2924,7 +2924,7 @@ void pingCommand(client *c) {
         return;
     }
 
-    if (c->flags & CLIENT_PUBSUB) {
+    if (c->flags & CLIENT_PUBSUB && c->resp == 2) {
         addReply(c,shared.mbulkhdr[2]);
         addReplyBulkCBuffer(c,"pong",4);
         if (c->argc == 1)