Forward a message sent by one client to the rest of the clients. Messages sent from clients using one path are not forwarded to other paths. Requires the `websockets` Python library.

socket-forwarding.py

from __future__ import print_function
import asyncio
from sys import argv
import websockets

connected = {}

def handler(sock, path):
	if path not in connected:
		connected[path] = set()
	connected[path].add(sock)
	print('Connected:', id(sock))
	try:
		while 1:
			data = await sock.recv()
			print(id(sock), ':', data)
			for s in connected[path]:
				await s.send(data)
	except (websockets.ConnectionClosed, KeyboardInterrupt):
		print('Disconnecting:', id(sock))
		return
	finally:
		connected[path].remove(sock)

port = 5678 if len(argv) < 1 else int(argv[1])

loop = asyncio.get_event_loop()
print('Serving 0.0.0.0 on port', port)
loop.run_until_complete(websockets.serve(handler, '0.0.0.0', port))
loop.run_forever()