From ca955b1ff2052f63f67cd2daa355ac51e62b8873 Mon Sep 17 00:00:00 2001
From: DJ2LS <75909252+DJ2LS@users.noreply.github.com>
Date: Sun, 4 Dec 2022 15:35:41 +0100
Subject: [PATCH] catch harmless RuntimeError: Set changed size during
 iteration

---
 tnc/sock.py | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/tnc/sock.py b/tnc/sock.py
index bdb5cdd7..ca842c11 100644
--- a/tnc/sock.py
+++ b/tnc/sock.py
@@ -84,13 +84,15 @@ class ThreadedTCPRequestHandler(socketserver.StreamRequestHandler):
                 sock_data += b"\n"  # append line limiter
 
                 # send data to all clients
-                # try:
-                for client in CONNECTED_CLIENTS:
-                    try:
-                        client.send(sock_data)
-                    except Exception as err:
-                        self.log.info("[SCK] Connection lost", e=err)
-                        self.connection_alive = False
+                try:
+                    for client in CONNECTED_CLIENTS:
+                        try:
+                            client.send(sock_data)
+                        except Exception as err:
+                            self.log.info("[SCK] Connection lost", e=err)
+                            self.connection_alive = False
+                except Exception as err:
+                    self.log.debug("[SCK] catch harmless RuntimeError: Set changed size during iteration", e=err)
 
             # we want to transmit scatter data only once to reduce network traffic
             static.SCATTER = []