From d8a8be7a96d7c6e32af2c1c20cea8863755c2dfe Mon Sep 17 00:00:00 2001
From: jef <jef@slechte.info>
Date: Tue, 20 Dec 2022 23:56:45 +0100
Subject: [PATCH] umqtt.robust: When reconnecting, close the previous socket.

---
 micropython/umqtt.robust/umqtt/robust.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/micropython/umqtt.robust/umqtt/robust.py b/micropython/umqtt.robust/umqtt/robust.py
index d9e4e9e97..77f1c0bb0 100644
--- a/micropython/umqtt.robust/umqtt/robust.py
+++ b/micropython/umqtt.robust/umqtt/robust.py
@@ -20,6 +20,11 @@ def log(self, in_reconnect, e):
     def reconnect(self):
         i = 0
         while 1:
+            try:
+                if self.sock:
+                    self.sock.close()
+            except OSError as e:
+                self.log(True, e)
             try:
                 return super().connect(False)
             except OSError as e: