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#!/usr/bin/env python
import asyncio
import os
import signal
from websockets.asyncio.server import serve
async def echo(websocket):
async for message in websocket:
await websocket.send(message)
async def main():
port = 8000 + int(os.environ["SUPERVISOR_PROCESS_NAME"][-2:])
async with serve(echo, "localhost", port) as server:
loop = asyncio.get_running_loop()
loop.add_signal_handler(signal.SIGTERM, server.close)
await server.wait_closed()
if __name__ == "__main__":
asyncio.run(main())
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