From 72b9b3e5e038f7e06c76d9b7719aa8f476d0811b Mon Sep 17 00:00:00 2001
From: Pavel Rochnyack <pavel2000@ngs.ru>
Date: Mon, 11 Dec 2017 03:24:33 +0700
Subject: [PATCH] memcached: Check for closed connection to avoid deadloop

Check for 'recv(...) == 0' condition was missing.
---
 src/memcached.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/memcached.c b/src/memcached.c
index 1cd5a301..d2827a48 100644
--- a/src/memcached.c
+++ b/src/memcached.c
@@ -291,6 +291,12 @@ static int memcached_query_daemon(char *buffer, size_t buffer_size,
       close(st->fd);
       st->fd = -1;
       return -1;
+    } else if (status == 0) {
+      ERROR("memcached plugin: Instance \"%s\": Connection closed by peer",
+            st->name);
+      close(st->fd);
+      st->fd = -1;
+      return -1;
     }
 
     buffer_fill += (size_t)status;
-- 
2.11.0