From 3bc2d1e9b712077e65bd3ede576d0a4a98071f52 Mon Sep 17 00:00:00 2001
From: rechrtb <rechrtb@gmail.com>
Date: Tue, 26 Sep 2023 20:38:33 +0900
Subject: [PATCH] Clear send buffer error manually

---
 src/Networking/MQTT/MqttClient.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Networking/MQTT/MqttClient.cpp b/src/Networking/MQTT/MqttClient.cpp
index 939e6b5ffe..373782fe64 100644
--- a/src/Networking/MQTT/MqttClient.cpp
+++ b/src/Networking/MQTT/MqttClient.cpp
@@ -151,6 +151,16 @@ bool MqttClient::Spin() noexcept
 					{
 						res = true;
 					}
+					else
+					{
+						// Workaround for a temporary bug where the error MQTT_ERROR_SEND_BUFFER_IS_FULL
+						// is not cleared even if the send buffer has been drained already.
+						if (err == MQTT_ERROR_SEND_BUFFER_IS_FULL)
+						{
+							client.error = MQTT_OK;
+							res = true;
+						}
+					}
 				}
 				break;