From 8442926841c194e547cb529df26c2caa8c489eda Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Thu, 11 Mar 2021 21:02:30 +0000
Subject: [PATCH] Fix connections retrying very rapidly in some situations.

Thanks to Abilio Marques.
---
 ChangeLog.txt | 1 +
 lib/loop.c    | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index 9f760e59..12692ef9 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -18,6 +18,7 @@ Broker:
 Client library:
 - Fix encrypted connections incorrectly connecting when the CA file passed to
   `mosquitto_tls_set()` is empty or invalid. Closes #2130.
+- Fix connections retrying very rapidly in some situations.
 
 Clients:
 - Fix possible loss of data in `mosquitto_pub -l` when sending multiple long
diff --git a/lib/loop.c b/lib/loop.c
index a3773b0a..6648def6 100644
--- a/lib/loop.c
+++ b/lib/loop.c
@@ -209,6 +209,15 @@ static int interruptible_sleep(struct mosquitto *mosq, unsigned long reconnect_d
 #else
 	local_timeout.tv_usec = 0;
 #endif
+
+#ifndef WIN32
+	if(read(mosq->sockpairR, &pairbuf, 1) == 0){
+	}
+#else
+	recv(mosq->sockpairR, &pairbuf, 1, 0);
+#endif
+
+
 	FD_ZERO(&readfds);
 	maxfd = 0;
 	if(mosq->sockpairR != INVALID_SOCKET){