Refactor default port number to variable

meshtastic/__main__.py

@@ -1159,7 +1159,7 @@ def common():
                         tcp_hostname, tcp_port = args.host.split(':')
                     else:
                         tcp_hostname = args.host
-                        tcp_port = 4403
+                        tcp_port = meshtastic.tcp_interface.DEFAULT_TCP_PORT
                     client = meshtastic.tcp_interface.TCPInterface(
                         tcp_hostname,
                         portNumber=tcp_port,

meshtastic/tcp_interface.py

@@ -6,6 +6,7 @@ from typing import Optional
 
 from meshtastic.stream_interface import StreamInterface
 
+DEFAULT_TCP_PORT = 4403
 
 class TCPInterface(StreamInterface):
     """Interface class for meshtastic devices over a TCP link"""
@@ -16,7 +17,7 @@ class TCPInterface(StreamInterface):
         debugOut=None,
         noProto=False,
         connectNow=True,
-        portNumber=4403,
+        portNumber=DEFAULT_TCP_PORT,
         noNodes:bool=False,
     ):
         """Constructor, opens a connection to a specified IP address/hostname