replay.py: add missing batch_size

configs/mixed.toml

@@ -29,7 +29,7 @@ protocol = "tcp"
 weight = 5
 idle_timeout_s = 0
 
-# Well-behvaed DNS-over-TLS clients.
+# Well-behaved DNS-over-TLS clients.
 [traffic.DoT]
 protocol = "dot"
 weight = 10

replay.py

@@ -29,6 +29,7 @@ DEFAULT_TRAFFIC_FIELDS = [
     'server',
     'channel_size',
     'max_clients',
+    'batch_size',
 ]
 
 # Protocol aliases are translated into specific dnssim functions.