From 1b9eed1755bc361706f0591d55d2bd334c5d25e4 Mon Sep 17 00:00:00 2001
From: Wiebe Cazemier <wiebe@halfgaar.net>
Date: Tue, 25 May 2021 15:46:41 +0200
Subject: [PATCH] Support disabling keep-alives

---
 client.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+), 0 deletions(-)

diff --git a/client.cpp b/client.cpp
index b33d3b5..709a53a 100644
--- a/client.cpp
+++ b/client.cpp
@@ -260,8 +260,19 @@ std::string Client::repr()
     return a.str();
 }
 
+/**
+ * @brief Client::keepAliveExpired
+ * @return
+ *
+ * [MQTT-3.1.2-24]: "If the Keep Alive value is non-zero and the Server does not receive a Control Packet from the
+ * Client within one and a half times the Keep Alive time period, it MUST disconnect the Network Connection to
+ * the Client as if the network had failed."
+ */
 bool Client::keepAliveExpired()
 {
+    if (keepalive == 0)
+        return false;
+
     if (!authenticated)
         return lastActivity + 20 < time(NULL);
 
--
libgit2 0.21.4